The methods in this class all throw a NullPointerException,
 if the specified array reference is null, except where noted.
 
The documentation for the methods contained in this class includes
 brief descriptions of the implementations. Such descriptions should
 be regarded as implementation notes, rather than parts of the
 specification. Implementors should feel free to substitute other
 algorithms, so long as the specification itself is adhered to. (For
 example, the algorithm used by sort(Object[]) does not have to be
 a MergeSort, but it does have to be stable.)
 
This class is a member of the Java Collections Framework.
- Since:
- 1.2
- 
Method SummaryModifier and TypeMethodDescriptionstatic <T> List<T> asList(T... a) Returns a fixed-size list backed by the specified array.static intbinarySearch(byte[] a, byte key) Searches the specified array of bytes for the specified value using the binary search algorithm.static intbinarySearch(byte[] a, int fromIndex, int toIndex, byte key) Searches a range of the specified array of bytes for the specified value using the binary search algorithm.static intbinarySearch(char[] a, char key) Searches the specified array of chars for the specified value using the binary search algorithm.static intbinarySearch(char[] a, int fromIndex, int toIndex, char key) Searches a range of the specified array of chars for the specified value using the binary search algorithm.static intbinarySearch(double[] a, double key) Searches the specified array of doubles for the specified value using the binary search algorithm.static intbinarySearch(double[] a, int fromIndex, int toIndex, double key) Searches a range of the specified array of doubles for the specified value using the binary search algorithm.static intbinarySearch(float[] a, float key) Searches the specified array of floats for the specified value using the binary search algorithm.static intbinarySearch(float[] a, int fromIndex, int toIndex, float key) Searches a range of the specified array of floats for the specified value using the binary search algorithm.static intbinarySearch(int[] a, int key) Searches the specified array of ints for the specified value using the binary search algorithm.static intbinarySearch(int[] a, int fromIndex, int toIndex, int key) Searches a range of the specified array of ints for the specified value using the binary search algorithm.static intbinarySearch(long[] a, int fromIndex, int toIndex, long key) Searches a range of the specified array of longs for the specified value using the binary search algorithm.static intbinarySearch(long[] a, long key) Searches the specified array of longs for the specified value using the binary search algorithm.static intbinarySearch(short[] a, int fromIndex, int toIndex, short key) Searches a range of the specified array of shorts for the specified value using the binary search algorithm.static intbinarySearch(short[] a, short key) Searches the specified array of shorts for the specified value using the binary search algorithm.static intbinarySearch(Object[] a, int fromIndex, int toIndex, Object key) Searches a range of the specified array for the specified object using the binary search algorithm.static intbinarySearch(Object[] a, Object key) Searches the specified array for the specified object using the binary search algorithm.static <T> intbinarySearch(T[] a, int fromIndex, int toIndex, T key, Comparator<? super T> c) Searches a range of the specified array for the specified object using the binary search algorithm.static <T> intbinarySearch(T[] a, T key, Comparator<? super T> c) Searches the specified array for the specified object using the binary search algorithm.static intcompare(boolean[] a, boolean[] b) Compares twobooleanarrays lexicographically.static intcompare(boolean[] a, int aFromIndex, int aToIndex, boolean[] b, int bFromIndex, int bToIndex) Compares twobooleanarrays lexicographically over the specified ranges.static intcompare(byte[] a, byte[] b) Compares twobytearrays lexicographically.static intcompare(byte[] a, int aFromIndex, int aToIndex, byte[] b, int bFromIndex, int bToIndex) Compares twobytearrays lexicographically over the specified ranges.static intcompare(char[] a, char[] b) Compares twochararrays lexicographically.static intcompare(char[] a, int aFromIndex, int aToIndex, char[] b, int bFromIndex, int bToIndex) Compares twochararrays lexicographically over the specified ranges.static intcompare(double[] a, double[] b) Compares twodoublearrays lexicographically.static intcompare(double[] a, int aFromIndex, int aToIndex, double[] b, int bFromIndex, int bToIndex) Compares twodoublearrays lexicographically over the specified ranges.static intcompare(float[] a, float[] b) Compares twofloatarrays lexicographically.static intcompare(float[] a, int aFromIndex, int aToIndex, float[] b, int bFromIndex, int bToIndex) Compares twofloatarrays lexicographically over the specified ranges.static intcompare(int[] a, int[] b) Compares twointarrays lexicographically.static intcompare(int[] a, int aFromIndex, int aToIndex, int[] b, int bFromIndex, int bToIndex) Compares twointarrays lexicographically over the specified ranges.static intcompare(long[] a, int aFromIndex, int aToIndex, long[] b, int bFromIndex, int bToIndex) Compares twolongarrays lexicographically over the specified ranges.static intcompare(long[] a, long[] b) Compares twolongarrays lexicographically.static intcompare(short[] a, int aFromIndex, int aToIndex, short[] b, int bFromIndex, int bToIndex) Compares twoshortarrays lexicographically over the specified ranges.static intcompare(short[] a, short[] b) Compares twoshortarrays lexicographically.static <T extends Comparable<? super T>>
 intcompare(T[] a, int aFromIndex, int aToIndex, T[] b, int bFromIndex, int bToIndex) Compares twoObjectarrays lexicographically over the specified ranges.static <T> intcompare(T[] a, int aFromIndex, int aToIndex, T[] b, int bFromIndex, int bToIndex, Comparator<? super T> cmp) Compares twoObjectarrays lexicographically over the specified ranges.static <T extends Comparable<? super T>>
 intcompare(T[] a, T[] b) Compares twoObjectarrays, within comparable elements, lexicographically.static <T> intcompare(T[] a, T[] b, Comparator<? super T> cmp) Compares twoObjectarrays lexicographically using a specified comparator.static intcompareUnsigned(byte[] a, byte[] b) Compares twobytearrays lexicographically, numerically treating elements as unsigned.static intcompareUnsigned(byte[] a, int aFromIndex, int aToIndex, byte[] b, int bFromIndex, int bToIndex) Compares twobytearrays lexicographically over the specified ranges, numerically treating elements as unsigned.static intcompareUnsigned(int[] a, int[] b) Compares twointarrays lexicographically, numerically treating elements as unsigned.static intcompareUnsigned(int[] a, int aFromIndex, int aToIndex, int[] b, int bFromIndex, int bToIndex) Compares twointarrays lexicographically over the specified ranges, numerically treating elements as unsigned.static intcompareUnsigned(long[] a, int aFromIndex, int aToIndex, long[] b, int bFromIndex, int bToIndex) Compares twolongarrays lexicographically over the specified ranges, numerically treating elements as unsigned.static intcompareUnsigned(long[] a, long[] b) Compares twolongarrays lexicographically, numerically treating elements as unsigned.static intcompareUnsigned(short[] a, int aFromIndex, int aToIndex, short[] b, int bFromIndex, int bToIndex) Compares twoshortarrays lexicographically over the specified ranges, numerically treating elements as unsigned.static intcompareUnsigned(short[] a, short[] b) Compares twoshortarrays lexicographically, numerically treating elements as unsigned.static boolean[]copyOf(boolean[] original, int newLength) Copies the specified array, truncating or padding withfalse(if necessary) so the copy has the specified length.static byte[]copyOf(byte[] original, int newLength) Copies the specified array, truncating or padding with zeros (if necessary) so the copy has the specified length.static char[]copyOf(char[] original, int newLength) Copies the specified array, truncating or padding with null characters (if necessary) so the copy has the specified length.static double[]copyOf(double[] original, int newLength) Copies the specified array, truncating or padding with zeros (if necessary) so the copy has the specified length.static float[]copyOf(float[] original, int newLength) Copies the specified array, truncating or padding with zeros (if necessary) so the copy has the specified length.static int[]copyOf(int[] original, int newLength) Copies the specified array, truncating or padding with zeros (if necessary) so the copy has the specified length.static long[]copyOf(long[] original, int newLength) Copies the specified array, truncating or padding with zeros (if necessary) so the copy has the specified length.static short[]copyOf(short[] original, int newLength) Copies the specified array, truncating or padding with zeros (if necessary) so the copy has the specified length.static <T> T[]copyOf(T[] original, int newLength) Copies the specified array, truncating or padding with nulls (if necessary) so the copy has the specified length.static <T,U> T[] Copies the specified array, truncating or padding with nulls (if necessary) so the copy has the specified length.static boolean[]copyOfRange(boolean[] original, int from, int to) Copies the specified range of the specified array into a new array.static byte[]copyOfRange(byte[] original, int from, int to) Copies the specified range of the specified array into a new array.static char[]copyOfRange(char[] original, int from, int to) Copies the specified range of the specified array into a new array.static double[]copyOfRange(double[] original, int from, int to) Copies the specified range of the specified array into a new array.static float[]copyOfRange(float[] original, int from, int to) Copies the specified range of the specified array into a new array.static int[]copyOfRange(int[] original, int from, int to) Copies the specified range of the specified array into a new array.static long[]copyOfRange(long[] original, int from, int to) Copies the specified range of the specified array into a new array.static short[]copyOfRange(short[] original, int from, int to) Copies the specified range of the specified array into a new array.static <T> T[]copyOfRange(T[] original, int from, int to) Copies the specified range of the specified array into a new array.static <T,U> T[] copyOfRange(U[] original, int from, int to, Class<? extends T[]> newType) Copies the specified range of the specified array into a new array.static booleandeepEquals(Object[] a1, Object[] a2) Returnstrueif the two specified arrays are deeply equal to one another.static intdeepHashCode(Object[] a) Returns a hash code based on the "deep contents" of the specified array.static StringdeepToString(Object[] a) Returns a string representation of the "deep contents" of the specified array.static booleanequals(boolean[] a, boolean[] a2) Returnstrueif the two specified arrays of booleans are equal to one another.static booleanequals(boolean[] a, int aFromIndex, int aToIndex, boolean[] b, int bFromIndex, int bToIndex) Returns true if the two specified arrays of booleans, over the specified ranges, are equal to one another.static booleanequals(byte[] a, byte[] a2) Returnstrueif the two specified arrays of bytes are equal to one another.static booleanequals(byte[] a, int aFromIndex, int aToIndex, byte[] b, int bFromIndex, int bToIndex) Returns true if the two specified arrays of bytes, over the specified ranges, are equal to one another.static booleanequals(char[] a, char[] a2) Returnstrueif the two specified arrays of chars are equal to one another.static booleanequals(char[] a, int aFromIndex, int aToIndex, char[] b, int bFromIndex, int bToIndex) Returns true if the two specified arrays of chars, over the specified ranges, are equal to one another.static booleanequals(double[] a, double[] a2) Returnstrueif the two specified arrays of doubles are equal to one another.static booleanequals(double[] a, int aFromIndex, int aToIndex, double[] b, int bFromIndex, int bToIndex) Returns true if the two specified arrays of doubles, over the specified ranges, are equal to one another.static booleanequals(float[] a, float[] a2) Returnstrueif the two specified arrays of floats are equal to one another.static booleanequals(float[] a, int aFromIndex, int aToIndex, float[] b, int bFromIndex, int bToIndex) Returns true if the two specified arrays of floats, over the specified ranges, are equal to one another.static booleanequals(int[] a, int[] a2) Returnstrueif the two specified arrays of ints are equal to one another.static booleanequals(int[] a, int aFromIndex, int aToIndex, int[] b, int bFromIndex, int bToIndex) Returns true if the two specified arrays of ints, over the specified ranges, are equal to one another.static booleanequals(long[] a, int aFromIndex, int aToIndex, long[] b, int bFromIndex, int bToIndex) Returns true if the two specified arrays of longs, over the specified ranges, are equal to one another.static booleanequals(long[] a, long[] a2) Returnstrueif the two specified arrays of longs are equal to one another.static booleanequals(short[] a, int aFromIndex, int aToIndex, short[] b, int bFromIndex, int bToIndex) Returns true if the two specified arrays of shorts, over the specified ranges, are equal to one another.static booleanequals(short[] a, short[] a2) Returnstrueif the two specified arrays of shorts are equal to one another.static booleanReturns true if the two specified arrays of Objects, over the specified ranges, are equal to one another.static booleanReturnstrueif the two specified arrays of Objects are equal to one another.static <T> booleanequals(T[] a, int aFromIndex, int aToIndex, T[] b, int bFromIndex, int bToIndex, Comparator<? super T> cmp) Returns true if the two specified arrays of Objects, over the specified ranges, are equal to one another.static <T> booleanequals(T[] a, T[] a2, Comparator<? super T> cmp) Returnstrueif the two specified arrays of Objects are equal to one another.static voidfill(boolean[] a, boolean val) Assigns the specified boolean value to each element of the specified array of booleans.static voidfill(boolean[] a, int fromIndex, int toIndex, boolean val) Assigns the specified boolean value to each element of the specified range of the specified array of booleans.static voidfill(byte[] a, byte val) Assigns the specified byte value to each element of the specified array of bytes.static voidfill(byte[] a, int fromIndex, int toIndex, byte val) Assigns the specified byte value to each element of the specified range of the specified array of bytes.static voidfill(char[] a, char val) Assigns the specified char value to each element of the specified array of chars.static voidfill(char[] a, int fromIndex, int toIndex, char val) Assigns the specified char value to each element of the specified range of the specified array of chars.static voidfill(double[] a, double val) Assigns the specified double value to each element of the specified array of doubles.static voidfill(double[] a, int fromIndex, int toIndex, double val) Assigns the specified double value to each element of the specified range of the specified array of doubles.static voidfill(float[] a, float val) Assigns the specified float value to each element of the specified array of floats.static voidfill(float[] a, int fromIndex, int toIndex, float val) Assigns the specified float value to each element of the specified range of the specified array of floats.static voidfill(int[] a, int val) Assigns the specified int value to each element of the specified array of ints.static voidfill(int[] a, int fromIndex, int toIndex, int val) Assigns the specified int value to each element of the specified range of the specified array of ints.static voidfill(long[] a, int fromIndex, int toIndex, long val) Assigns the specified long value to each element of the specified range of the specified array of longs.static voidfill(long[] a, long val) Assigns the specified long value to each element of the specified array of longs.static voidfill(short[] a, int fromIndex, int toIndex, short val) Assigns the specified short value to each element of the specified range of the specified array of shorts.static voidfill(short[] a, short val) Assigns the specified short value to each element of the specified array of shorts.static voidAssigns the specified Object reference to each element of the specified range of the specified array of Objects.static voidAssigns the specified Object reference to each element of the specified array of Objects.static inthashCode(boolean[] a) Returns a hash code based on the contents of the specified array.static inthashCode(byte[] a) Returns a hash code based on the contents of the specified array.static inthashCode(char[] a) Returns a hash code based on the contents of the specified array.static inthashCode(double[] a) Returns a hash code based on the contents of the specified array.static inthashCode(float[] a) Returns a hash code based on the contents of the specified array.static inthashCode(int[] a) Returns a hash code based on the contents of the specified array.static inthashCode(long[] a) Returns a hash code based on the contents of the specified array.static inthashCode(short[] a) Returns a hash code based on the contents of the specified array.static intReturns a hash code based on the contents of the specified array.static intmismatch(boolean[] a, boolean[] b) Finds and returns the index of the first mismatch between twobooleanarrays, otherwise return -1 if no mismatch is found.static intmismatch(boolean[] a, int aFromIndex, int aToIndex, boolean[] b, int bFromIndex, int bToIndex) Finds and returns the relative index of the first mismatch between twobooleanarrays over the specified ranges, otherwise return -1 if no mismatch is found.static intmismatch(byte[] a, byte[] b) Finds and returns the index of the first mismatch between twobytearrays, otherwise return -1 if no mismatch is found.static intmismatch(byte[] a, int aFromIndex, int aToIndex, byte[] b, int bFromIndex, int bToIndex) Finds and returns the relative index of the first mismatch between twobytearrays over the specified ranges, otherwise return -1 if no mismatch is found.static intmismatch(char[] a, char[] b) Finds and returns the index of the first mismatch between twochararrays, otherwise return -1 if no mismatch is found.static intmismatch(char[] a, int aFromIndex, int aToIndex, char[] b, int bFromIndex, int bToIndex) Finds and returns the relative index of the first mismatch between twochararrays over the specified ranges, otherwise return -1 if no mismatch is found.static intmismatch(double[] a, double[] b) Finds and returns the index of the first mismatch between twodoublearrays, otherwise return -1 if no mismatch is found.static intmismatch(double[] a, int aFromIndex, int aToIndex, double[] b, int bFromIndex, int bToIndex) Finds and returns the relative index of the first mismatch between twodoublearrays over the specified ranges, otherwise return -1 if no mismatch is found.static intmismatch(float[] a, float[] b) Finds and returns the index of the first mismatch between twofloatarrays, otherwise return -1 if no mismatch is found.static intmismatch(float[] a, int aFromIndex, int aToIndex, float[] b, int bFromIndex, int bToIndex) Finds and returns the relative index of the first mismatch between twofloatarrays over the specified ranges, otherwise return -1 if no mismatch is found.static intmismatch(int[] a, int[] b) Finds and returns the index of the first mismatch between twointarrays, otherwise return -1 if no mismatch is found.static intmismatch(int[] a, int aFromIndex, int aToIndex, int[] b, int bFromIndex, int bToIndex) Finds and returns the relative index of the first mismatch between twointarrays over the specified ranges, otherwise return -1 if no mismatch is found.static intmismatch(long[] a, int aFromIndex, int aToIndex, long[] b, int bFromIndex, int bToIndex) Finds and returns the relative index of the first mismatch between twolongarrays over the specified ranges, otherwise return -1 if no mismatch is found.static intmismatch(long[] a, long[] b) Finds and returns the index of the first mismatch between twolongarrays, otherwise return -1 if no mismatch is found.static intmismatch(short[] a, int aFromIndex, int aToIndex, short[] b, int bFromIndex, int bToIndex) Finds and returns the relative index of the first mismatch between twoshortarrays over the specified ranges, otherwise return -1 if no mismatch is found.static intmismatch(short[] a, short[] b) Finds and returns the index of the first mismatch between twoshortarrays, otherwise return -1 if no mismatch is found.static intFinds and returns the relative index of the first mismatch between twoObjectarrays over the specified ranges, otherwise return -1 if no mismatch is found.static intFinds and returns the index of the first mismatch between twoObjectarrays, otherwise return -1 if no mismatch is found.static <T> intmismatch(T[] a, int aFromIndex, int aToIndex, T[] b, int bFromIndex, int bToIndex, Comparator<? super T> cmp) Finds and returns the relative index of the first mismatch between twoObjectarrays over the specified ranges, otherwise return -1 if no mismatch is found.static <T> intmismatch(T[] a, T[] b, Comparator<? super T> cmp) Finds and returns the index of the first mismatch between twoObjectarrays, otherwise return -1 if no mismatch is found.static voidparallelPrefix(double[] array, int fromIndex, int toIndex, DoubleBinaryOperator op) PerformsparallelPrefix(double[], DoubleBinaryOperator)for the given subrange of the array.static voidparallelPrefix(double[] array, DoubleBinaryOperator op) Cumulates, in parallel, each element of the given array in place, using the supplied function.static voidparallelPrefix(int[] array, int fromIndex, int toIndex, IntBinaryOperator op) PerformsparallelPrefix(int[], IntBinaryOperator)for the given subrange of the array.static voidparallelPrefix(int[] array, IntBinaryOperator op) Cumulates, in parallel, each element of the given array in place, using the supplied function.static voidparallelPrefix(long[] array, int fromIndex, int toIndex, LongBinaryOperator op) PerformsparallelPrefix(long[], LongBinaryOperator)for the given subrange of the array.static voidparallelPrefix(long[] array, LongBinaryOperator op) Cumulates, in parallel, each element of the given array in place, using the supplied function.static <T> voidparallelPrefix(T[] array, int fromIndex, int toIndex, BinaryOperator<T> op) PerformsparallelPrefix(Object[], BinaryOperator)for the given subrange of the array.static <T> voidparallelPrefix(T[] array, BinaryOperator<T> op) Cumulates, in parallel, each element of the given array in place, using the supplied function.static voidparallelSetAll(double[] array, IntToDoubleFunction generator) Set all elements of the specified array, in parallel, using the provided generator function to compute each element.static voidparallelSetAll(int[] array, IntUnaryOperator generator) Set all elements of the specified array, in parallel, using the provided generator function to compute each element.static voidparallelSetAll(long[] array, IntToLongFunction generator) Set all elements of the specified array, in parallel, using the provided generator function to compute each element.static <T> voidparallelSetAll(T[] array, IntFunction<? extends T> generator) Set all elements of the specified array, in parallel, using the provided generator function to compute each element.static voidparallelSort(byte[] a) Sorts the specified array into ascending numerical order.static voidparallelSort(byte[] a, int fromIndex, int toIndex) Sorts the specified range of the array into ascending numerical order.static voidparallelSort(char[] a) Sorts the specified array into ascending numerical order.static voidparallelSort(char[] a, int fromIndex, int toIndex) Sorts the specified range of the array into ascending numerical order.static voidparallelSort(double[] a) Sorts the specified array into ascending numerical order.static voidparallelSort(double[] a, int fromIndex, int toIndex) Sorts the specified range of the array into ascending numerical order.static voidparallelSort(float[] a) Sorts the specified array into ascending numerical order.static voidparallelSort(float[] a, int fromIndex, int toIndex) Sorts the specified range of the array into ascending numerical order.static voidparallelSort(int[] a) Sorts the specified array into ascending numerical order.static voidparallelSort(int[] a, int fromIndex, int toIndex) Sorts the specified range of the array into ascending numerical order.static voidparallelSort(long[] a) Sorts the specified array into ascending numerical order.static voidparallelSort(long[] a, int fromIndex, int toIndex) Sorts the specified range of the array into ascending numerical order.static voidparallelSort(short[] a) Sorts the specified array into ascending numerical order.static voidparallelSort(short[] a, int fromIndex, int toIndex) Sorts the specified range of the array into ascending numerical order.static <T extends Comparable<? super T>>
 voidparallelSort(T[] a) Sorts the specified array of objects into ascending order, according to the natural ordering of its elements.static <T extends Comparable<? super T>>
 voidparallelSort(T[] a, int fromIndex, int toIndex) Sorts the specified range of the specified array of objects into ascending order, according to the natural ordering of its elements.static <T> voidparallelSort(T[] a, int fromIndex, int toIndex, Comparator<? super T> cmp) Sorts the specified range of the specified array of objects according to the order induced by the specified comparator.static <T> voidparallelSort(T[] a, Comparator<? super T> cmp) Sorts the specified array of objects according to the order induced by the specified comparator.static voidsetAll(double[] array, IntToDoubleFunction generator) Set all elements of the specified array, using the provided generator function to compute each element.static voidsetAll(int[] array, IntUnaryOperator generator) Set all elements of the specified array, using the provided generator function to compute each element.static voidsetAll(long[] array, IntToLongFunction generator) Set all elements of the specified array, using the provided generator function to compute each element.static <T> voidsetAll(T[] array, IntFunction<? extends T> generator) Set all elements of the specified array, using the provided generator function to compute each element.static voidsort(byte[] a) Sorts the specified array into ascending numerical order.static voidsort(byte[] a, int fromIndex, int toIndex) Sorts the specified range of the array into ascending order.static voidsort(char[] a) Sorts the specified array into ascending numerical order.static voidsort(char[] a, int fromIndex, int toIndex) Sorts the specified range of the array into ascending order.static voidsort(double[] a) Sorts the specified array into ascending numerical order.static voidsort(double[] a, int fromIndex, int toIndex) Sorts the specified range of the array into ascending order.static voidsort(float[] a) Sorts the specified array into ascending numerical order.static voidsort(float[] a, int fromIndex, int toIndex) Sorts the specified range of the array into ascending order.static voidsort(int[] a) Sorts the specified array into ascending numerical order.static voidsort(int[] a, int fromIndex, int toIndex) Sorts the specified range of the array into ascending order.static voidsort(long[] a) Sorts the specified array into ascending numerical order.static voidsort(long[] a, int fromIndex, int toIndex) Sorts the specified range of the array into ascending order.static voidsort(short[] a) Sorts the specified array into ascending numerical order.static voidsort(short[] a, int fromIndex, int toIndex) Sorts the specified range of the array into ascending order.static voidSorts the specified array of objects into ascending order, according to the natural ordering of its elements.static voidSorts the specified range of the specified array of objects into ascending order, according to the natural ordering of its elements.static <T> voidsort(T[] a, int fromIndex, int toIndex, Comparator<? super T> c) Sorts the specified range of the specified array of objects according to the order induced by the specified comparator.static <T> voidsort(T[] a, Comparator<? super T> c) Sorts the specified array of objects according to the order induced by the specified comparator.static Spliterator.OfDoublespliterator(double[] array) Returns aSpliterator.OfDoublecovering all of the specified array.static Spliterator.OfDoublespliterator(double[] array, int startInclusive, int endExclusive) Returns aSpliterator.OfDoublecovering the specified range of the specified array.static Spliterator.OfIntspliterator(int[] array) Returns aSpliterator.OfIntcovering all of the specified array.static Spliterator.OfIntspliterator(int[] array, int startInclusive, int endExclusive) Returns aSpliterator.OfIntcovering the specified range of the specified array.static Spliterator.OfLongspliterator(long[] array) Returns aSpliterator.OfLongcovering all of the specified array.static Spliterator.OfLongspliterator(long[] array, int startInclusive, int endExclusive) Returns aSpliterator.OfLongcovering the specified range of the specified array.static <T> Spliterator<T> spliterator(T[] array) Returns aSpliteratorcovering all of the specified array.static <T> Spliterator<T> spliterator(T[] array, int startInclusive, int endExclusive) Returns aSpliteratorcovering the specified range of the specified array.static DoubleStreamstream(double[] array) Returns a sequentialDoubleStreamwith the specified array as its source.static DoubleStreamstream(double[] array, int startInclusive, int endExclusive) Returns a sequentialDoubleStreamwith the specified range of the specified array as its source.static IntStreamstream(int[] array) Returns a sequentialIntStreamwith the specified array as its source.static IntStreamstream(int[] array, int startInclusive, int endExclusive) Returns a sequentialIntStreamwith the specified range of the specified array as its source.static LongStreamstream(long[] array) Returns a sequentialLongStreamwith the specified array as its source.static LongStreamstream(long[] array, int startInclusive, int endExclusive) Returns a sequentialLongStreamwith the specified range of the specified array as its source.static <T> Stream<T> stream(T[] array) Returns a sequentialStreamwith the specified array as its source.static <T> Stream<T> stream(T[] array, int startInclusive, int endExclusive) Returns a sequentialStreamwith the specified range of the specified array as its source.static StringtoString(boolean[] a) Returns a string representation of the contents of the specified array.static StringtoString(byte[] a) Returns a string representation of the contents of the specified array.static StringtoString(char[] a) Returns a string representation of the contents of the specified array.static StringtoString(double[] a) Returns a string representation of the contents of the specified array.static StringtoString(float[] a) Returns a string representation of the contents of the specified array.static StringtoString(int[] a) Returns a string representation of the contents of the specified array.static StringtoString(long[] a) Returns a string representation of the contents of the specified array.static StringtoString(short[] a) Returns a string representation of the contents of the specified array.static StringReturns a string representation of the contents of the specified array.
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Method Details- 
sortpublic static void sort(int[] a) Sorts the specified array into ascending numerical order.- Implementation Note:
- The sorting algorithm is a Dual-Pivot Quicksort by Vladimir Yaroslavskiy, Jon Bentley, and Joshua Bloch. This algorithm offers O(n log(n)) performance on all data sets, and is typically faster than traditional (one-pivot) Quicksort implementations.
- Parameters:
- a- the array to be sorted
 
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sortpublic static void sort(int[] a, int fromIndex, int toIndex) Sorts the specified range of the array into ascending order. The range to be sorted extends from the indexfromIndex, inclusive, to the indextoIndex, exclusive. IffromIndex == toIndex, the range to be sorted is empty.- Implementation Note:
- The sorting algorithm is a Dual-Pivot Quicksort by Vladimir Yaroslavskiy, Jon Bentley, and Joshua Bloch. This algorithm offers O(n log(n)) performance on all data sets, and is typically faster than traditional (one-pivot) Quicksort implementations.
- Parameters:
- a- the array to be sorted
- fromIndex- the index of the first element, inclusive, to be sorted
- toIndex- the index of the last element, exclusive, to be sorted
- Throws:
- IllegalArgumentException- if- fromIndex > toIndex
- ArrayIndexOutOfBoundsException- if- fromIndex < 0or- toIndex > a.length
 
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sortpublic static void sort(long[] a) Sorts the specified array into ascending numerical order.- Implementation Note:
- The sorting algorithm is a Dual-Pivot Quicksort by Vladimir Yaroslavskiy, Jon Bentley, and Joshua Bloch. This algorithm offers O(n log(n)) performance on all data sets, and is typically faster than traditional (one-pivot) Quicksort implementations.
- Parameters:
- a- the array to be sorted
 
- 
sortpublic static void sort(long[] a, int fromIndex, int toIndex) Sorts the specified range of the array into ascending order. The range to be sorted extends from the indexfromIndex, inclusive, to the indextoIndex, exclusive. IffromIndex == toIndex, the range to be sorted is empty.- Implementation Note:
- The sorting algorithm is a Dual-Pivot Quicksort by Vladimir Yaroslavskiy, Jon Bentley, and Joshua Bloch. This algorithm offers O(n log(n)) performance on all data sets, and is typically faster than traditional (one-pivot) Quicksort implementations.
- Parameters:
- a- the array to be sorted
- fromIndex- the index of the first element, inclusive, to be sorted
- toIndex- the index of the last element, exclusive, to be sorted
- Throws:
- IllegalArgumentException- if- fromIndex > toIndex
- ArrayIndexOutOfBoundsException- if- fromIndex < 0or- toIndex > a.length
 
- 
sortpublic static void sort(short[] a) Sorts the specified array into ascending numerical order.- Implementation Note:
- The sorting algorithm is a Dual-Pivot Quicksort by Vladimir Yaroslavskiy, Jon Bentley, and Joshua Bloch. This algorithm offers O(n log(n)) performance on all data sets, and is typically faster than traditional (one-pivot) Quicksort implementations.
- Parameters:
- a- the array to be sorted
 
- 
sortpublic static void sort(short[] a, int fromIndex, int toIndex) Sorts the specified range of the array into ascending order. The range to be sorted extends from the indexfromIndex, inclusive, to the indextoIndex, exclusive. IffromIndex == toIndex, the range to be sorted is empty.- Implementation Note:
- The sorting algorithm is a Dual-Pivot Quicksort by Vladimir Yaroslavskiy, Jon Bentley, and Joshua Bloch. This algorithm offers O(n log(n)) performance on all data sets, and is typically faster than traditional (one-pivot) Quicksort implementations.
- Parameters:
- a- the array to be sorted
- fromIndex- the index of the first element, inclusive, to be sorted
- toIndex- the index of the last element, exclusive, to be sorted
- Throws:
- IllegalArgumentException- if- fromIndex > toIndex
- ArrayIndexOutOfBoundsException- if- fromIndex < 0or- toIndex > a.length
 
- 
sortpublic static void sort(char[] a) Sorts the specified array into ascending numerical order.- Implementation Note:
- The sorting algorithm is a Dual-Pivot Quicksort by Vladimir Yaroslavskiy, Jon Bentley, and Joshua Bloch. This algorithm offers O(n log(n)) performance on all data sets, and is typically faster than traditional (one-pivot) Quicksort implementations.
- Parameters:
- a- the array to be sorted
 
- 
sortpublic static void sort(char[] a, int fromIndex, int toIndex) Sorts the specified range of the array into ascending order. The range to be sorted extends from the indexfromIndex, inclusive, to the indextoIndex, exclusive. IffromIndex == toIndex, the range to be sorted is empty.- Implementation Note:
- The sorting algorithm is a Dual-Pivot Quicksort by Vladimir Yaroslavskiy, Jon Bentley, and Joshua Bloch. This algorithm offers O(n log(n)) performance on all data sets, and is typically faster than traditional (one-pivot) Quicksort implementations.
- Parameters:
- a- the array to be sorted
- fromIndex- the index of the first element, inclusive, to be sorted
- toIndex- the index of the last element, exclusive, to be sorted
- Throws:
- IllegalArgumentException- if- fromIndex > toIndex
- ArrayIndexOutOfBoundsException- if- fromIndex < 0or- toIndex > a.length
 
- 
sortpublic static void sort(byte[] a) Sorts the specified array into ascending numerical order.- Implementation Note:
- The sorting algorithm is a Dual-Pivot Quicksort by Vladimir Yaroslavskiy, Jon Bentley, and Joshua Bloch. This algorithm offers O(n log(n)) performance on all data sets, and is typically faster than traditional (one-pivot) Quicksort implementations.
- Parameters:
- a- the array to be sorted
 
- 
sortpublic static void sort(byte[] a, int fromIndex, int toIndex) Sorts the specified range of the array into ascending order. The range to be sorted extends from the indexfromIndex, inclusive, to the indextoIndex, exclusive. IffromIndex == toIndex, the range to be sorted is empty.- Implementation Note:
- The sorting algorithm is a Dual-Pivot Quicksort by Vladimir Yaroslavskiy, Jon Bentley, and Joshua Bloch. This algorithm offers O(n log(n)) performance on all data sets, and is typically faster than traditional (one-pivot) Quicksort implementations.
- Parameters:
- a- the array to be sorted
- fromIndex- the index of the first element, inclusive, to be sorted
- toIndex- the index of the last element, exclusive, to be sorted
- Throws:
- IllegalArgumentException- if- fromIndex > toIndex
- ArrayIndexOutOfBoundsException- if- fromIndex < 0or- toIndex > a.length
 
- 
sortpublic static void sort(float[] a) Sorts the specified array into ascending numerical order.The <relation does not provide a total order on all float values:-0.0f == 0.0fistrueand aFloat.NaNvalue compares neither less than, greater than, nor equal to any value, even itself. This method uses the total order imposed by the methodFloat.compareTo(java.lang.Float):-0.0fis treated as less than value0.0fandFloat.NaNis considered greater than any other value and allFloat.NaNvalues are considered equal.- Implementation Note:
- The sorting algorithm is a Dual-Pivot Quicksort by Vladimir Yaroslavskiy, Jon Bentley, and Joshua Bloch. This algorithm offers O(n log(n)) performance on all data sets, and is typically faster than traditional (one-pivot) Quicksort implementations.
- Parameters:
- a- the array to be sorted
 
- 
sortpublic static void sort(float[] a, int fromIndex, int toIndex) Sorts the specified range of the array into ascending order. The range to be sorted extends from the indexfromIndex, inclusive, to the indextoIndex, exclusive. IffromIndex == toIndex, the range to be sorted is empty.The <relation does not provide a total order on all float values:-0.0f == 0.0fistrueand aFloat.NaNvalue compares neither less than, greater than, nor equal to any value, even itself. This method uses the total order imposed by the methodFloat.compareTo(java.lang.Float):-0.0fis treated as less than value0.0fandFloat.NaNis considered greater than any other value and allFloat.NaNvalues are considered equal.- Implementation Note:
- The sorting algorithm is a Dual-Pivot Quicksort by Vladimir Yaroslavskiy, Jon Bentley, and Joshua Bloch. This algorithm offers O(n log(n)) performance on all data sets, and is typically faster than traditional (one-pivot) Quicksort implementations.
- Parameters:
- a- the array to be sorted
- fromIndex- the index of the first element, inclusive, to be sorted
- toIndex- the index of the last element, exclusive, to be sorted
- Throws:
- IllegalArgumentException- if- fromIndex > toIndex
- ArrayIndexOutOfBoundsException- if- fromIndex < 0or- toIndex > a.length
 
- 
sortpublic static void sort(double[] a) Sorts the specified array into ascending numerical order.The <relation does not provide a total order on all double values:-0.0d == 0.0distrueand aDouble.NaNvalue compares neither less than, greater than, nor equal to any value, even itself. This method uses the total order imposed by the methodDouble.compareTo(java.lang.Double):-0.0dis treated as less than value0.0dandDouble.NaNis considered greater than any other value and allDouble.NaNvalues are considered equal.- Implementation Note:
- The sorting algorithm is a Dual-Pivot Quicksort by Vladimir Yaroslavskiy, Jon Bentley, and Joshua Bloch. This algorithm offers O(n log(n)) performance on all data sets, and is typically faster than traditional (one-pivot) Quicksort implementations.
- Parameters:
- a- the array to be sorted
 
- 
sortpublic static void sort(double[] a, int fromIndex, int toIndex) Sorts the specified range of the array into ascending order. The range to be sorted extends from the indexfromIndex, inclusive, to the indextoIndex, exclusive. IffromIndex == toIndex, the range to be sorted is empty.The <relation does not provide a total order on all double values:-0.0d == 0.0distrueand aDouble.NaNvalue compares neither less than, greater than, nor equal to any value, even itself. This method uses the total order imposed by the methodDouble.compareTo(java.lang.Double):-0.0dis treated as less than value0.0dandDouble.NaNis considered greater than any other value and allDouble.NaNvalues are considered equal.- Implementation Note:
- The sorting algorithm is a Dual-Pivot Quicksort by Vladimir Yaroslavskiy, Jon Bentley, and Joshua Bloch. This algorithm offers O(n log(n)) performance on all data sets, and is typically faster than traditional (one-pivot) Quicksort implementations.
- Parameters:
- a- the array to be sorted
- fromIndex- the index of the first element, inclusive, to be sorted
- toIndex- the index of the last element, exclusive, to be sorted
- Throws:
- IllegalArgumentException- if- fromIndex > toIndex
- ArrayIndexOutOfBoundsException- if- fromIndex < 0or- toIndex > a.length
 
- 
parallelSortpublic static void parallelSort(byte[] a) Sorts the specified array into ascending numerical order.- Implementation Note:
- The sorting algorithm is a Dual-Pivot Quicksort by Vladimir Yaroslavskiy, Jon Bentley and Josh Bloch. This algorithm offers O(n log(n)) performance on all data sets, and is typically faster than traditional (one-pivot) Quicksort implementations.
- Parameters:
- a- the array to be sorted
- Since:
- 1.8
 
- 
parallelSortpublic static void parallelSort(byte[] a, int fromIndex, int toIndex) Sorts the specified range of the array into ascending numerical order. The range to be sorted extends from the indexfromIndex, inclusive, to the indextoIndex, exclusive. IffromIndex == toIndex, the range to be sorted is empty.- Implementation Note:
- The sorting algorithm is a Dual-Pivot Quicksort by Vladimir Yaroslavskiy, Jon Bentley and Josh Bloch. This algorithm offers O(n log(n)) performance on all data sets, and is typically faster than traditional (one-pivot) Quicksort implementations.
- Parameters:
- a- the array to be sorted
- fromIndex- the index of the first element, inclusive, to be sorted
- toIndex- the index of the last element, exclusive, to be sorted
- Throws:
- IllegalArgumentException- if- fromIndex > toIndex
- ArrayIndexOutOfBoundsException- if- fromIndex < 0or- toIndex > a.length
- Since:
- 1.8
 
- 
parallelSortpublic static void parallelSort(char[] a) Sorts the specified array into ascending numerical order.- Implementation Note:
- The sorting algorithm is a Dual-Pivot Quicksort by Vladimir Yaroslavskiy, Jon Bentley and Josh Bloch. This algorithm offers O(n log(n)) performance on all data sets, and is typically faster than traditional (one-pivot) Quicksort implementations.
- Parameters:
- a- the array to be sorted
- Since:
- 1.8
 
- 
parallelSortpublic static void parallelSort(char[] a, int fromIndex, int toIndex) Sorts the specified range of the array into ascending numerical order. The range to be sorted extends from the indexfromIndex, inclusive, to the indextoIndex, exclusive. IffromIndex == toIndex, the range to be sorted is empty.- Implementation Note:
- The sorting algorithm is a Dual-Pivot Quicksort by Vladimir Yaroslavskiy, Jon Bentley and Josh Bloch. This algorithm offers O(n log(n)) performance on all data sets, and is typically faster than traditional (one-pivot) Quicksort implementations.
- Parameters:
- a- the array to be sorted
- fromIndex- the index of the first element, inclusive, to be sorted
- toIndex- the index of the last element, exclusive, to be sorted
- Throws:
- IllegalArgumentException- if- fromIndex > toIndex
- ArrayIndexOutOfBoundsException- if- fromIndex < 0or- toIndex > a.length
- Since:
- 1.8
 
- 
parallelSortpublic static void parallelSort(short[] a) Sorts the specified array into ascending numerical order.- Implementation Note:
- The sorting algorithm is a Dual-Pivot Quicksort by Vladimir Yaroslavskiy, Jon Bentley and Josh Bloch. This algorithm offers O(n log(n)) performance on all data sets, and is typically faster than traditional (one-pivot) Quicksort implementations.
- Parameters:
- a- the array to be sorted
- Since:
- 1.8
 
- 
parallelSortpublic static void parallelSort(short[] a, int fromIndex, int toIndex) Sorts the specified range of the array into ascending numerical order. The range to be sorted extends from the indexfromIndex, inclusive, to the indextoIndex, exclusive. IffromIndex == toIndex, the range to be sorted is empty.- Implementation Note:
- The sorting algorithm is a Dual-Pivot Quicksort by Vladimir Yaroslavskiy, Jon Bentley and Josh Bloch. This algorithm offers O(n log(n)) performance on all data sets, and is typically faster than traditional (one-pivot) Quicksort implementations.
- Parameters:
- a- the array to be sorted
- fromIndex- the index of the first element, inclusive, to be sorted
- toIndex- the index of the last element, exclusive, to be sorted
- Throws:
- IllegalArgumentException- if- fromIndex > toIndex
- ArrayIndexOutOfBoundsException- if- fromIndex < 0or- toIndex > a.length
- Since:
- 1.8
 
- 
parallelSortpublic static void parallelSort(int[] a) Sorts the specified array into ascending numerical order.- Implementation Note:
- The sorting algorithm is a Dual-Pivot Quicksort by Vladimir Yaroslavskiy, Jon Bentley and Josh Bloch. This algorithm offers O(n log(n)) performance on all data sets, and is typically faster than traditional (one-pivot) Quicksort implementations.
- Parameters:
- a- the array to be sorted
- Since:
- 1.8
 
- 
parallelSortpublic static void parallelSort(int[] a, int fromIndex, int toIndex) Sorts the specified range of the array into ascending numerical order. The range to be sorted extends from the indexfromIndex, inclusive, to the indextoIndex, exclusive. IffromIndex == toIndex, the range to be sorted is empty.- Implementation Note:
- The sorting algorithm is a Dual-Pivot Quicksort by Vladimir Yaroslavskiy, Jon Bentley and Josh Bloch. This algorithm offers O(n log(n)) performance on all data sets, and is typically faster than traditional (one-pivot) Quicksort implementations.
- Parameters:
- a- the array to be sorted
- fromIndex- the index of the first element, inclusive, to be sorted
- toIndex- the index of the last element, exclusive, to be sorted
- Throws:
- IllegalArgumentException- if- fromIndex > toIndex
- ArrayIndexOutOfBoundsException- if- fromIndex < 0or- toIndex > a.length
- Since:
- 1.8
 
- 
parallelSortpublic static void parallelSort(long[] a) Sorts the specified array into ascending numerical order.- Implementation Note:
- The sorting algorithm is a Dual-Pivot Quicksort by Vladimir Yaroslavskiy, Jon Bentley and Josh Bloch. This algorithm offers O(n log(n)) performance on all data sets, and is typically faster than traditional (one-pivot) Quicksort implementations.
- Parameters:
- a- the array to be sorted
- Since:
- 1.8
 
- 
parallelSortpublic static void parallelSort(long[] a, int fromIndex, int toIndex) Sorts the specified range of the array into ascending numerical order. The range to be sorted extends from the indexfromIndex, inclusive, to the indextoIndex, exclusive. IffromIndex == toIndex, the range to be sorted is empty.- Implementation Note:
- The sorting algorithm is a Dual-Pivot Quicksort by Vladimir Yaroslavskiy, Jon Bentley and Josh Bloch. This algorithm offers O(n log(n)) performance on all data sets, and is typically faster than traditional (one-pivot) Quicksort implementations.
- Parameters:
- a- the array to be sorted
- fromIndex- the index of the first element, inclusive, to be sorted
- toIndex- the index of the last element, exclusive, to be sorted
- Throws:
- IllegalArgumentException- if- fromIndex > toIndex
- ArrayIndexOutOfBoundsException- if- fromIndex < 0or- toIndex > a.length
- Since:
- 1.8
 
- 
parallelSortpublic static void parallelSort(float[] a) Sorts the specified array into ascending numerical order.The <relation does not provide a total order on all float values:-0.0f == 0.0fistrueand aFloat.NaNvalue compares neither less than, greater than, nor equal to any value, even itself. This method uses the total order imposed by the methodFloat.compareTo(java.lang.Float):-0.0fis treated as less than value0.0fandFloat.NaNis considered greater than any other value and allFloat.NaNvalues are considered equal.- Implementation Note:
- The sorting algorithm is a Dual-Pivot Quicksort by Vladimir Yaroslavskiy, Jon Bentley and Josh Bloch. This algorithm offers O(n log(n)) performance on all data sets, and is typically faster than traditional (one-pivot) Quicksort implementations.
- Parameters:
- a- the array to be sorted
- Since:
- 1.8
 
- 
parallelSortpublic static void parallelSort(float[] a, int fromIndex, int toIndex) Sorts the specified range of the array into ascending numerical order. The range to be sorted extends from the indexfromIndex, inclusive, to the indextoIndex, exclusive. IffromIndex == toIndex, the range to be sorted is empty.The <relation does not provide a total order on all float values:-0.0f == 0.0fistrueand aFloat.NaNvalue compares neither less than, greater than, nor equal to any value, even itself. This method uses the total order imposed by the methodFloat.compareTo(java.lang.Float):-0.0fis treated as less than value0.0fandFloat.NaNis considered greater than any other value and allFloat.NaNvalues are considered equal.- Implementation Note:
- The sorting algorithm is a Dual-Pivot Quicksort by Vladimir Yaroslavskiy, Jon Bentley and Josh Bloch. This algorithm offers O(n log(n)) performance on all data sets, and is typically faster than traditional (one-pivot) Quicksort implementations.
- Parameters:
- a- the array to be sorted
- fromIndex- the index of the first element, inclusive, to be sorted
- toIndex- the index of the last element, exclusive, to be sorted
- Throws:
- IllegalArgumentException- if- fromIndex > toIndex
- ArrayIndexOutOfBoundsException- if- fromIndex < 0or- toIndex > a.length
- Since:
- 1.8
 
- 
parallelSortpublic static void parallelSort(double[] a) Sorts the specified array into ascending numerical order.The <relation does not provide a total order on all double values:-0.0d == 0.0distrueand aDouble.NaNvalue compares neither less than, greater than, nor equal to any value, even itself. This method uses the total order imposed by the methodDouble.compareTo(java.lang.Double):-0.0dis treated as less than value0.0dandDouble.NaNis considered greater than any other value and allDouble.NaNvalues are considered equal.- Implementation Note:
- The sorting algorithm is a Dual-Pivot Quicksort by Vladimir Yaroslavskiy, Jon Bentley and Josh Bloch. This algorithm offers O(n log(n)) performance on all data sets, and is typically faster than traditional (one-pivot) Quicksort implementations.
- Parameters:
- a- the array to be sorted
- Since:
- 1.8
 
- 
parallelSortpublic static void parallelSort(double[] a, int fromIndex, int toIndex) Sorts the specified range of the array into ascending numerical order. The range to be sorted extends from the indexfromIndex, inclusive, to the indextoIndex, exclusive. IffromIndex == toIndex, the range to be sorted is empty.The <relation does not provide a total order on all double values:-0.0d == 0.0distrueand aDouble.NaNvalue compares neither less than, greater than, nor equal to any value, even itself. This method uses the total order imposed by the methodDouble.compareTo(java.lang.Double):-0.0dis treated as less than value0.0dandDouble.NaNis considered greater than any other value and allDouble.NaNvalues are considered equal.- Implementation Note:
- The sorting algorithm is a Dual-Pivot Quicksort by Vladimir Yaroslavskiy, Jon Bentley and Josh Bloch. This algorithm offers O(n log(n)) performance on all data sets, and is typically faster than traditional (one-pivot) Quicksort implementations.
- Parameters:
- a- the array to be sorted
- fromIndex- the index of the first element, inclusive, to be sorted
- toIndex- the index of the last element, exclusive, to be sorted
- Throws:
- IllegalArgumentException- if- fromIndex > toIndex
- ArrayIndexOutOfBoundsException- if- fromIndex < 0or- toIndex > a.length
- Since:
- 1.8
 
- 
parallelSortSorts the specified array of objects into ascending order, according to the natural ordering of its elements. All elements in the array must implement theComparableinterface. Furthermore, all elements in the array must be mutually comparable (that is,e1.compareTo(e2)must not throw aClassCastExceptionfor any elementse1ande2in the array).This sort is guaranteed to be stable: equal elements will not be reordered as a result of the sort. - Implementation Note:
- The sorting algorithm is a parallel sort-merge that breaks the
 array into sub-arrays that are themselves sorted and then merged. When
 the sub-array length reaches a minimum granularity, the sub-array is
 sorted using the appropriate Arrays.sortmethod. If the length of the specified array is less than the minimum granularity, then it is sorted using the appropriateArrays.sortmethod. The algorithm requires a working space no greater than the size of the original array. TheForkJoin common poolis used to execute any parallel tasks.
- Type Parameters:
- T- the class of the objects to be sorted
- Parameters:
- a- the array to be sorted
- Throws:
- ClassCastException- if the array contains elements that are not mutually comparable (for example, strings and integers)
- IllegalArgumentException- (optional) if the natural ordering of the array elements is found to violate the- Comparablecontract
- Since:
- 1.8
 
- 
parallelSortpublic static <T extends Comparable<? super T>> void parallelSort(T[] a, int fromIndex, int toIndex) Sorts the specified range of the specified array of objects into ascending order, according to the natural ordering of its elements. The range to be sorted extends from indexfromIndex, inclusive, to indextoIndex, exclusive. (IffromIndex==toIndex, the range to be sorted is empty.) All elements in this range must implement theComparableinterface. Furthermore, all elements in this range must be mutually comparable (that is,e1.compareTo(e2)must not throw aClassCastExceptionfor any elementse1ande2in the array).This sort is guaranteed to be stable: equal elements will not be reordered as a result of the sort. - Implementation Note:
- The sorting algorithm is a parallel sort-merge that breaks the
 array into sub-arrays that are themselves sorted and then merged. When
 the sub-array length reaches a minimum granularity, the sub-array is
 sorted using the appropriate Arrays.sortmethod. If the length of the specified array is less than the minimum granularity, then it is sorted using the appropriateArrays.sortmethod. The algorithm requires a working space no greater than the size of the specified range of the original array. TheForkJoin common poolis used to execute any parallel tasks.
- Type Parameters:
- T- the class of the objects to be sorted
- Parameters:
- a- the array to be sorted
- fromIndex- the index of the first element (inclusive) to be sorted
- toIndex- the index of the last element (exclusive) to be sorted
- Throws:
- IllegalArgumentException- if- fromIndex > toIndexor (optional) if the natural ordering of the array elements is found to violate the- Comparablecontract
- ArrayIndexOutOfBoundsException- if- fromIndex < 0or- toIndex > a.length
- ClassCastException- if the array contains elements that are not mutually comparable (for example, strings and integers).
- Since:
- 1.8
 
- 
parallelSortSorts the specified array of objects according to the order induced by the specified comparator. All elements in the array must be mutually comparable by the specified comparator (that is,c.compare(e1, e2)must not throw aClassCastExceptionfor any elementse1ande2in the array).This sort is guaranteed to be stable: equal elements will not be reordered as a result of the sort. - Implementation Note:
- The sorting algorithm is a parallel sort-merge that breaks the
 array into sub-arrays that are themselves sorted and then merged. When
 the sub-array length reaches a minimum granularity, the sub-array is
 sorted using the appropriate Arrays.sortmethod. If the length of the specified array is less than the minimum granularity, then it is sorted using the appropriateArrays.sortmethod. The algorithm requires a working space no greater than the size of the original array. TheForkJoin common poolis used to execute any parallel tasks.
- Type Parameters:
- T- the class of the objects to be sorted
- Parameters:
- a- the array to be sorted
- cmp- the comparator to determine the order of the array. A- nullvalue indicates that the elements' natural ordering should be used.
- Throws:
- ClassCastException- if the array contains elements that are not mutually comparable using the specified comparator
- IllegalArgumentException- (optional) if the comparator is found to violate the- Comparatorcontract
- Since:
- 1.8
 
- 
parallelSortSorts the specified range of the specified array of objects according to the order induced by the specified comparator. The range to be sorted extends from indexfromIndex, inclusive, to indextoIndex, exclusive. (IffromIndex==toIndex, the range to be sorted is empty.) All elements in the range must be mutually comparable by the specified comparator (that is,c.compare(e1, e2)must not throw aClassCastExceptionfor any elementse1ande2in the range).This sort is guaranteed to be stable: equal elements will not be reordered as a result of the sort. - Implementation Note:
- The sorting algorithm is a parallel sort-merge that breaks the
 array into sub-arrays that are themselves sorted and then merged. When
 the sub-array length reaches a minimum granularity, the sub-array is
 sorted using the appropriate Arrays.sortmethod. If the length of the specified array is less than the minimum granularity, then it is sorted using the appropriateArrays.sortmethod. The algorithm requires a working space no greater than the size of the specified range of the original array. TheForkJoin common poolis used to execute any parallel tasks.
- Type Parameters:
- T- the class of the objects to be sorted
- Parameters:
- a- the array to be sorted
- fromIndex- the index of the first element (inclusive) to be sorted
- toIndex- the index of the last element (exclusive) to be sorted
- cmp- the comparator to determine the order of the array. A- nullvalue indicates that the elements' natural ordering should be used.
- Throws:
- IllegalArgumentException- if- fromIndex > toIndexor (optional) if the natural ordering of the array elements is found to violate the- Comparablecontract
- ArrayIndexOutOfBoundsException- if- fromIndex < 0or- toIndex > a.length
- ClassCastException- if the array contains elements that are not mutually comparable (for example, strings and integers).
- Since:
- 1.8
 
- 
sortSorts the specified array of objects into ascending order, according to the natural ordering of its elements. All elements in the array must implement theComparableinterface. Furthermore, all elements in the array must be mutually comparable (that is,e1.compareTo(e2)must not throw aClassCastExceptionfor any elementse1ande2in the array).This sort is guaranteed to be stable: equal elements will not be reordered as a result of the sort. Implementation note: This implementation is a stable, adaptive, iterative mergesort that requires far fewer than n lg(n) comparisons when the input array is partially sorted, while offering the performance of a traditional mergesort when the input array is randomly ordered. If the input array is nearly sorted, the implementation requires approximately n comparisons. Temporary storage requirements vary from a small constant for nearly sorted input arrays to n/2 object references for randomly ordered input arrays. The implementation takes equal advantage of ascending and descending order in its input array, and can take advantage of ascending and descending order in different parts of the same input array. It is well-suited to merging two or more sorted arrays: simply concatenate the arrays and sort the resulting array. The implementation was adapted from Tim Peters's list sort for Python ( TimSort). It uses techniques from Peter McIlroy's "Optimistic Sorting and Information Theoretic Complexity", in Proceedings of the Fourth Annual ACM-SIAM Symposium on Discrete Algorithms, pp 467-474, January 1993. - Parameters:
- a- the array to be sorted
- Throws:
- ClassCastException- if the array contains elements that are not mutually comparable (for example, strings and integers)
- IllegalArgumentException- (optional) if the natural ordering of the array elements is found to violate the- Comparablecontract
 
- 
sortSorts the specified range of the specified array of objects into ascending order, according to the natural ordering of its elements. The range to be sorted extends from indexfromIndex, inclusive, to indextoIndex, exclusive. (IffromIndex==toIndex, the range to be sorted is empty.) All elements in this range must implement theComparableinterface. Furthermore, all elements in this range must be mutually comparable (that is,e1.compareTo(e2)must not throw aClassCastExceptionfor any elementse1ande2in the array).This sort is guaranteed to be stable: equal elements will not be reordered as a result of the sort. Implementation note: This implementation is a stable, adaptive, iterative mergesort that requires far fewer than n lg(n) comparisons when the input array is partially sorted, while offering the performance of a traditional mergesort when the input array is randomly ordered. If the input array is nearly sorted, the implementation requires approximately n comparisons. Temporary storage requirements vary from a small constant for nearly sorted input arrays to n/2 object references for randomly ordered input arrays. The implementation takes equal advantage of ascending and descending order in its input array, and can take advantage of ascending and descending order in different parts of the same input array. It is well-suited to merging two or more sorted arrays: simply concatenate the arrays and sort the resulting array. The implementation was adapted from Tim Peters's list sort for Python ( TimSort). It uses techniques from Peter McIlroy's "Optimistic Sorting and Information Theoretic Complexity", in Proceedings of the Fourth Annual ACM-SIAM Symposium on Discrete Algorithms, pp 467-474, January 1993. - Parameters:
- a- the array to be sorted
- fromIndex- the index of the first element (inclusive) to be sorted
- toIndex- the index of the last element (exclusive) to be sorted
- Throws:
- IllegalArgumentException- if- fromIndex > toIndexor (optional) if the natural ordering of the array elements is found to violate the- Comparablecontract
- ArrayIndexOutOfBoundsException- if- fromIndex < 0or- toIndex > a.length
- ClassCastException- if the array contains elements that are not mutually comparable (for example, strings and integers).
 
- 
sortSorts the specified array of objects according to the order induced by the specified comparator. All elements in the array must be mutually comparable by the specified comparator (that is,c.compare(e1, e2)must not throw aClassCastExceptionfor any elementse1ande2in the array).This sort is guaranteed to be stable: equal elements will not be reordered as a result of the sort. Implementation note: This implementation is a stable, adaptive, iterative mergesort that requires far fewer than n lg(n) comparisons when the input array is partially sorted, while offering the performance of a traditional mergesort when the input array is randomly ordered. If the input array is nearly sorted, the implementation requires approximately n comparisons. Temporary storage requirements vary from a small constant for nearly sorted input arrays to n/2 object references for randomly ordered input arrays. The implementation takes equal advantage of ascending and descending order in its input array, and can take advantage of ascending and descending order in different parts of the same input array. It is well-suited to merging two or more sorted arrays: simply concatenate the arrays and sort the resulting array. The implementation was adapted from Tim Peters's list sort for Python ( TimSort). It uses techniques from Peter McIlroy's "Optimistic Sorting and Information Theoretic Complexity", in Proceedings of the Fourth Annual ACM-SIAM Symposium on Discrete Algorithms, pp 467-474, January 1993. - Type Parameters:
- T- the class of the objects to be sorted
- Parameters:
- a- the array to be sorted
- c- the comparator to determine the order of the array. A- nullvalue indicates that the elements' natural ordering should be used.
- Throws:
- ClassCastException- if the array contains elements that are not mutually comparable using the specified comparator
- IllegalArgumentException- (optional) if the comparator is found to violate the- Comparatorcontract
 
- 
sortSorts the specified range of the specified array of objects according to the order induced by the specified comparator. The range to be sorted extends from indexfromIndex, inclusive, to indextoIndex, exclusive. (IffromIndex==toIndex, the range to be sorted is empty.) All elements in the range must be mutually comparable by the specified comparator (that is,c.compare(e1, e2)must not throw aClassCastExceptionfor any elementse1ande2in the range).This sort is guaranteed to be stable: equal elements will not be reordered as a result of the sort. Implementation note: This implementation is a stable, adaptive, iterative mergesort that requires far fewer than n lg(n) comparisons when the input array is partially sorted, while offering the performance of a traditional mergesort when the input array is randomly ordered. If the input array is nearly sorted, the implementation requires approximately n comparisons. Temporary storage requirements vary from a small constant for nearly sorted input arrays to n/2 object references for randomly ordered input arrays. The implementation takes equal advantage of ascending and descending order in its input array, and can take advantage of ascending and descending order in different parts of the same input array. It is well-suited to merging two or more sorted arrays: simply concatenate the arrays and sort the resulting array. The implementation was adapted from Tim Peters's list sort for Python ( TimSort). It uses techniques from Peter McIlroy's "Optimistic Sorting and Information Theoretic Complexity", in Proceedings of the Fourth Annual ACM-SIAM Symposium on Discrete Algorithms, pp 467-474, January 1993. - Type Parameters:
- T- the class of the objects to be sorted
- Parameters:
- a- the array to be sorted
- fromIndex- the index of the first element (inclusive) to be sorted
- toIndex- the index of the last element (exclusive) to be sorted
- c- the comparator to determine the order of the array. A- nullvalue indicates that the elements' natural ordering should be used.
- Throws:
- ClassCastException- if the array contains elements that are not mutually comparable using the specified comparator.
- IllegalArgumentException- if- fromIndex > toIndexor (optional) if the comparator is found to violate the- Comparatorcontract
- ArrayIndexOutOfBoundsException- if- fromIndex < 0or- toIndex > a.length
 
- 
parallelPrefixCumulates, in parallel, each element of the given array in place, using the supplied function. For example if the array initially holds[2, 1, 0, 3]and the operation performs addition, then upon return the array holds[2, 3, 3, 6]. Parallel prefix computation is usually more efficient than sequential loops for large arrays.- Type Parameters:
- T- the class of the objects in the array
- Parameters:
- array- the array, which is modified in-place by this method
- op- a side-effect-free, associative function to perform the cumulation
- Throws:
- NullPointerException- if the specified array or function is null
- Since:
- 1.8
 
- 
parallelPrefixPerformsparallelPrefix(Object[], BinaryOperator)for the given subrange of the array.- Type Parameters:
- T- the class of the objects in the array
- Parameters:
- array- the array
- fromIndex- the index of the first element, inclusive
- toIndex- the index of the last element, exclusive
- op- a side-effect-free, associative function to perform the cumulation
- Throws:
- IllegalArgumentException- if- fromIndex > toIndex
- ArrayIndexOutOfBoundsException- if- fromIndex < 0or- toIndex > array.length
- NullPointerException- if the specified array or function is null
- Since:
- 1.8
 
- 
parallelPrefixCumulates, in parallel, each element of the given array in place, using the supplied function. For example if the array initially holds[2, 1, 0, 3]and the operation performs addition, then upon return the array holds[2, 3, 3, 6]. Parallel prefix computation is usually more efficient than sequential loops for large arrays.- Parameters:
- array- the array, which is modified in-place by this method
- op- a side-effect-free, associative function to perform the cumulation
- Throws:
- NullPointerException- if the specified array or function is null
- Since:
- 1.8
 
- 
parallelPrefixPerformsparallelPrefix(long[], LongBinaryOperator)for the given subrange of the array.- Parameters:
- array- the array
- fromIndex- the index of the first element, inclusive
- toIndex- the index of the last element, exclusive
- op- a side-effect-free, associative function to perform the cumulation
- Throws:
- IllegalArgumentException- if- fromIndex > toIndex
- ArrayIndexOutOfBoundsException- if- fromIndex < 0or- toIndex > array.length
- NullPointerException- if the specified array or function is null
- Since:
- 1.8
 
- 
parallelPrefixCumulates, in parallel, each element of the given array in place, using the supplied function. For example if the array initially holds[2.0, 1.0, 0.0, 3.0]and the operation performs addition, then upon return the array holds[2.0, 3.0, 3.0, 6.0]. Parallel prefix computation is usually more efficient than sequential loops for large arrays.Because floating-point operations may not be strictly associative, the returned result may not be identical to the value that would be obtained if the operation was performed sequentially. - Parameters:
- array- the array, which is modified in-place by this method
- op- a side-effect-free function to perform the cumulation
- Throws:
- NullPointerException- if the specified array or function is null
- Since:
- 1.8
 
- 
parallelPrefixpublic static void parallelPrefix(double[] array, int fromIndex, int toIndex, DoubleBinaryOperator op) PerformsparallelPrefix(double[], DoubleBinaryOperator)for the given subrange of the array.- Parameters:
- array- the array
- fromIndex- the index of the first element, inclusive
- toIndex- the index of the last element, exclusive
- op- a side-effect-free, associative function to perform the cumulation
- Throws:
- IllegalArgumentException- if- fromIndex > toIndex
- ArrayIndexOutOfBoundsException- if- fromIndex < 0or- toIndex > array.length
- NullPointerException- if the specified array or function is null
- Since:
- 1.8
 
- 
parallelPrefixCumulates, in parallel, each element of the given array in place, using the supplied function. For example if the array initially holds[2, 1, 0, 3]and the operation performs addition, then upon return the array holds[2, 3, 3, 6]. Parallel prefix computation is usually more efficient than sequential loops for large arrays.- Parameters:
- array- the array, which is modified in-place by this method
- op- a side-effect-free, associative function to perform the cumulation
- Throws:
- NullPointerException- if the specified array or function is null
- Since:
- 1.8
 
- 
parallelPrefixPerformsparallelPrefix(int[], IntBinaryOperator)for the given subrange of the array.- Parameters:
- array- the array
- fromIndex- the index of the first element, inclusive
- toIndex- the index of the last element, exclusive
- op- a side-effect-free, associative function to perform the cumulation
- Throws:
- IllegalArgumentException- if- fromIndex > toIndex
- ArrayIndexOutOfBoundsException- if- fromIndex < 0or- toIndex > array.length
- NullPointerException- if the specified array or function is null
- Since:
- 1.8
 
- 
binarySearchpublic static int binarySearch(long[] a, long key) Searches the specified array of longs for the specified value using the binary search algorithm. The array must be sorted (as by thesort(long[])method) prior to making this call. If it is not sorted, the results are undefined. If the array contains multiple elements with the specified value, there is no guarantee which one will be found.- Parameters:
- a- the array to be searched
- key- the value to be searched for
- Returns:
- index of the search key, if it is contained in the array;
         otherwise, (-(insertion point) - 1). The insertion point is defined as the point at which the key would be inserted into the array: the index of the first element greater than the key, ora.lengthif all elements in the array are less than the specified key. Note that this guarantees that the return value will be >= 0 if and only if the key is found.
 
- 
binarySearchpublic static int binarySearch(long[] a, int fromIndex, int toIndex, long key) Searches a range of the specified array of longs for the specified value using the binary search algorithm. The range must be sorted (as by thesort(long[], int, int)method) prior to making this call. If it is not sorted, the results are undefined. If the range contains multiple elements with the specified value, there is no guarantee which one will be found.- Parameters:
- a- the array to be searched
- fromIndex- the index of the first element (inclusive) to be searched
- toIndex- the index of the last element (exclusive) to be searched
- key- the value to be searched for
- Returns:
- index of the search key, if it is contained in the array
         within the specified range;
         otherwise, (-(insertion point) - 1). The insertion point is defined as the point at which the key would be inserted into the array: the index of the first element in the range greater than the key, ortoIndexif all elements in the range are less than the specified key. Note that this guarantees that the return value will be >= 0 if and only if the key is found.
- Throws:
- IllegalArgumentException- if- fromIndex > toIndex
- ArrayIndexOutOfBoundsException- if- fromIndex < 0 or toIndex > a.length
- Since:
- 1.6
 
- 
binarySearchpublic static int binarySearch(int[] a, int key) Searches the specified array of ints for the specified value using the binary search algorithm. The array must be sorted (as by thesort(int[])method) prior to making this call. If it is not sorted, the results are undefined. If the array contains multiple elements with the specified value, there is no guarantee which one will be found.- Parameters:
- a- the array to be searched
- key- the value to be searched for
- Returns:
- index of the search key, if it is contained in the array;
         otherwise, (-(insertion point) - 1). The insertion point is defined as the point at which the key would be inserted into the array: the index of the first element greater than the key, ora.lengthif all elements in the array are less than the specified key. Note that this guarantees that the return value will be >= 0 if and only if the key is found.
 
- 
binarySearchpublic static int binarySearch(int[] a, int fromIndex, int toIndex, int key) Searches a range of the specified array of ints for the specified value using the binary search algorithm. The range must be sorted (as by thesort(int[], int, int)method) prior to making this call. If it is not sorted, the results are undefined. If the range contains multiple elements with the specified value, there is no guarantee which one will be found.- Parameters:
- a- the array to be searched
- fromIndex- the index of the first element (inclusive) to be searched
- toIndex- the index of the last element (exclusive) to be searched
- key- the value to be searched for
- Returns:
- index of the search key, if it is contained in the array
         within the specified range;
         otherwise, (-(insertion point) - 1). The insertion point is defined as the point at which the key would be inserted into the array: the index of the first element in the range greater than the key, ortoIndexif all elements in the range are less than the specified key. Note that this guarantees that the return value will be >= 0 if and only if the key is found.
- Throws:
- IllegalArgumentException- if- fromIndex > toIndex
- ArrayIndexOutOfBoundsException- if- fromIndex < 0 or toIndex > a.length
- Since:
- 1.6
 
- 
binarySearchpublic static int binarySearch(short[] a, short key) Searches the specified array of shorts for the specified value using the binary search algorithm. The array must be sorted (as by thesort(short[])method) prior to making this call. If it is not sorted, the results are undefined. If the array contains multiple elements with the specified value, there is no guarantee which one will be found.- Parameters:
- a- the array to be searched
- key- the value to be searched for
- Returns:
- index of the search key, if it is contained in the array;
         otherwise, (-(insertion point) - 1). The insertion point is defined as the point at which the key would be inserted into the array: the index of the first element greater than the key, ora.lengthif all elements in the array are less than the specified key. Note that this guarantees that the return value will be >= 0 if and only if the key is found.
 
- 
binarySearchpublic static int binarySearch(short[] a, int fromIndex, int toIndex, short key) Searches a range of the specified array of shorts for the specified value using the binary search algorithm. The range must be sorted (as by thesort(short[], int, int)method) prior to making this call. If it is not sorted, the results are undefined. If the range contains multiple elements with the specified value, there is no guarantee which one will be found.- Parameters:
- a- the array to be searched
- fromIndex- the index of the first element (inclusive) to be searched
- toIndex- the index of the last element (exclusive) to be searched
- key- the value to be searched for
- Returns:
- index of the search key, if it is contained in the array
         within the specified range;
         otherwise, (-(insertion point) - 1). The insertion point is defined as the point at which the key would be inserted into the array: the index of the first element in the range greater than the key, ortoIndexif all elements in the range are less than the specified key. Note that this guarantees that the return value will be >= 0 if and only if the key is found.
- Throws:
- IllegalArgumentException- if- fromIndex > toIndex
- ArrayIndexOutOfBoundsException- if- fromIndex < 0 or toIndex > a.length
- Since:
- 1.6
 
- 
binarySearchpublic static int binarySearch(char[] a, char key) Searches the specified array of chars for the specified value using the binary search algorithm. The array must be sorted (as by thesort(char[])method) prior to making this call. If it is not sorted, the results are undefined. If the array contains multiple elements with the specified value, there is no guarantee which one will be found.- Parameters:
- a- the array to be searched
- key- the value to be searched for
- Returns:
- index of the search key, if it is contained in the array;
         otherwise, (-(insertion point) - 1). The insertion point is defined as the point at which the key would be inserted into the array: the index of the first element greater than the key, ora.lengthif all elements in the array are less than the specified key. Note that this guarantees that the return value will be >= 0 if and only if the key is found.
 
- 
binarySearchpublic static int binarySearch(char[] a, int fromIndex, int toIndex, char key) Searches a range of the specified array of chars for the specified value using the binary search algorithm. The range must be sorted (as by thesort(char[], int, int)method) prior to making this call. If it is not sorted, the results are undefined. If the range contains multiple elements with the specified value, there is no guarantee which one will be found.- Parameters:
- a- the array to be searched
- fromIndex- the index of the first element (inclusive) to be searched
- toIndex- the index of the last element (exclusive) to be searched
- key- the value to be searched for
- Returns:
- index of the search key, if it is contained in the array
         within the specified range;
         otherwise, (-(insertion point) - 1). The insertion point is defined as the point at which the key would be inserted into the array: the index of the first element in the range greater than the key, ortoIndexif all elements in the range are less than the specified key. Note that this guarantees that the return value will be >= 0 if and only if the key is found.
- Throws:
- IllegalArgumentException- if- fromIndex > toIndex
- ArrayIndexOutOfBoundsException- if- fromIndex < 0 or toIndex > a.length
- Since:
- 1.6
 
- 
binarySearchpublic static int binarySearch(byte[] a, byte key) Searches the specified array of bytes for the specified value using the binary search algorithm. The array must be sorted (as by thesort(byte[])method) prior to making this call. If it is not sorted, the results are undefined. If the array contains multiple elements with the specified value, there is no guarantee which one will be found.- Parameters:
- a- the array to be searched
- key- the value to be searched for
- Returns:
- index of the search key, if it is contained in the array;
         otherwise, (-(insertion point) - 1). The insertion point is defined as the point at which the key would be inserted into the array: the index of the first element greater than the key, ora.lengthif all elements in the array are less than the specified key. Note that this guarantees that the return value will be >= 0 if and only if the key is found.
 
- 
binarySearchpublic static int binarySearch(byte[] a, int fromIndex, int toIndex, byte key) Searches a range of the specified array of bytes for the specified value using the binary search algorithm. The range must be sorted (as by thesort(byte[], int, int)method) prior to making this call. If it is not sorted, the results are undefined. If the range contains multiple elements with the specified value, there is no guarantee which one will be found.- Parameters:
- a- the array to be searched
- fromIndex- the index of the first element (inclusive) to be searched
- toIndex- the index of the last element (exclusive) to be searched
- key- the value to be searched for
- Returns:
- index of the search key, if it is contained in the array
         within the specified range;
         otherwise, (-(insertion point) - 1). The insertion point is defined as the point at which the key would be inserted into the array: the index of the first element in the range greater than the key, ortoIndexif all elements in the range are less than the specified key. Note that this guarantees that the return value will be >= 0 if and only if the key is found.
- Throws:
- IllegalArgumentException- if- fromIndex > toIndex
- ArrayIndexOutOfBoundsException- if- fromIndex < 0 or toIndex > a.length
- Since:
- 1.6
 
- 
binarySearchpublic static int binarySearch(double[] a, double key) Searches the specified array of doubles for the specified value using the binary search algorithm. The array must be sorted (as by thesort(double[])method) prior to making this call. If it is not sorted, the results are undefined. If the array contains multiple elements with the specified value, there is no guarantee which one will be found. This method considers all NaN values to be equivalent and equal.- Parameters:
- a- the array to be searched
- key- the value to be searched for
- Returns:
- index of the search key, if it is contained in the array;
         otherwise, (-(insertion point) - 1). The insertion point is defined as the point at which the key would be inserted into the array: the index of the first element greater than the key, ora.lengthif all elements in the array are less than the specified key. Note that this guarantees that the return value will be >= 0 if and only if the key is found.
 
- 
binarySearchpublic static int binarySearch(double[] a, int fromIndex, int toIndex, double key) Searches a range of the specified array of doubles for the specified value using the binary search algorithm. The range must be sorted (as by thesort(double[], int, int)method) prior to making this call. If it is not sorted, the results are undefined. If the range contains multiple elements with the specified value, there is no guarantee which one will be found. This method considers all NaN values to be equivalent and equal.- Parameters:
- a- the array to be searched
- fromIndex- the index of the first element (inclusive) to be searched
- toIndex- the index of the last element (exclusive) to be searched
- key- the value to be searched for
- Returns:
- index of the search key, if it is contained in the array
         within the specified range;
         otherwise, (-(insertion point) - 1). The insertion point is defined as the point at which the key would be inserted into the array: the index of the first element in the range greater than the key, ortoIndexif all elements in the range are less than the specified key. Note that this guarantees that the return value will be >= 0 if and only if the key is found.
- Throws:
- IllegalArgumentException- if- fromIndex > toIndex
- ArrayIndexOutOfBoundsException- if- fromIndex < 0 or toIndex > a.length
- Since:
- 1.6
 
- 
binarySearchpublic static int binarySearch(float[] a, float key) Searches the specified array of floats for the specified value using the binary search algorithm. The array must be sorted (as by thesort(float[])method) prior to making this call. If it is not sorted, the results are undefined. If the array contains multiple elements with the specified value, there is no guarantee which one will be found. This method considers all NaN values to be equivalent and equal.- Parameters:
- a- the array to be searched
- key- the value to be searched for
- Returns:
- index of the search key, if it is contained in the array;
         otherwise, (-(insertion point) - 1). The insertion point is defined as the point at which the key would be inserted into the array: the index of the first element greater than the key, ora.lengthif all elements in the array are less than the specified key. Note that this guarantees that the return value will be >= 0 if and only if the key is found.
 
- 
binarySearchpublic static int binarySearch(float[] a, int fromIndex, int toIndex, float key) Searches a range of the specified array of floats for the specified value using the binary search algorithm. The range must be sorted (as by thesort(float[], int, int)method) prior to making this call. If it is not sorted, the results are undefined. If the range contains multiple elements with the specified value, there is no guarantee which one will be found. This method considers all NaN values to be equivalent and equal.- Parameters:
- a- the array to be searched
- fromIndex- the index of the first element (inclusive) to be searched
- toIndex- the index of the last element (exclusive) to be searched
- key- the value to be searched for
- Returns:
- index of the search key, if it is contained in the array
         within the specified range;
         otherwise, (-(insertion point) - 1). The insertion point is defined as the point at which the key would be inserted into the array: the index of the first element in the range greater than the key, ortoIndexif all elements in the range are less than the specified key. Note that this guarantees that the return value will be >= 0 if and only if the key is found.
- Throws:
- IllegalArgumentException- if- fromIndex > toIndex
- ArrayIndexOutOfBoundsException- if- fromIndex < 0 or toIndex > a.length
- Since:
- 1.6
 
- 
binarySearchSearches the specified array for the specified object using the binary search algorithm. The array must be sorted into ascending order according to the natural ordering of its elements (as by thesort(Object[])method) prior to making this call. If it is not sorted, the results are undefined. (If the array contains elements that are not mutually comparable (for example, strings and integers), it cannot be sorted according to the natural ordering of its elements, hence results are undefined.) If the array contains multiple elements equal to the specified object, there is no guarantee which one will be found.- Parameters:
- a- the array to be searched
- key- the value to be searched for
- Returns:
- index of the search key, if it is contained in the array;
         otherwise, (-(insertion point) - 1). The insertion point is defined as the point at which the key would be inserted into the array: the index of the first element greater than the key, ora.lengthif all elements in the array are less than the specified key. Note that this guarantees that the return value will be >= 0 if and only if the key is found.
- Throws:
- ClassCastException- if the search key is not comparable to the elements of the array.
 
- 
binarySearchSearches a range of the specified array for the specified object using the binary search algorithm. The range must be sorted into ascending order according to the natural ordering of its elements (as by thesort(Object[], int, int)method) prior to making this call. If it is not sorted, the results are undefined. (If the range contains elements that are not mutually comparable (for example, strings and integers), it cannot be sorted according to the natural ordering of its elements, hence results are undefined.) If the range contains multiple elements equal to the specified object, there is no guarantee which one will be found.- Parameters:
- a- the array to be searched
- fromIndex- the index of the first element (inclusive) to be searched
- toIndex- the index of the last element (exclusive) to be searched
- key- the value to be searched for
- Returns:
- index of the search key, if it is contained in the array
         within the specified range;
         otherwise, (-(insertion point) - 1). The insertion point is defined as the point at which the key would be inserted into the array: the index of the first element in the range greater than the key, ortoIndexif all elements in the range are less than the specified key. Note that this guarantees that the return value will be >= 0 if and only if the key is found.
- Throws:
- ClassCastException- if the search key is not comparable to the elements of the array within the specified range.
- IllegalArgumentException- if- fromIndex > toIndex
- ArrayIndexOutOfBoundsException- if- fromIndex < 0 or toIndex > a.length
- Since:
- 1.6
 
- 
binarySearchSearches the specified array for the specified object using the binary search algorithm. The array must be sorted into ascending order according to the specified comparator (as by thesort(T[], Comparator)method) prior to making this call. If it is not sorted, the results are undefined. If the array contains multiple elements equal to the specified object, there is no guarantee which one will be found.- Type Parameters:
- T- the class of the objects in the array
- Parameters:
- a- the array to be searched
- key- the value to be searched for
- c- the comparator by which the array is ordered. A- nullvalue indicates that the elements' natural ordering should be used.
- Returns:
- index of the search key, if it is contained in the array;
         otherwise, (-(insertion point) - 1). The insertion point is defined as the point at which the key would be inserted into the array: the index of the first element greater than the key, ora.lengthif all elements in the array are less than the specified key. Note that this guarantees that the return value will be >= 0 if and only if the key is found.
- Throws:
- ClassCastException- if the array contains elements that are not mutually comparable using the specified comparator, or the search key is not comparable to the elements of the array using this comparator.
 
- 
binarySearchpublic static <T> int binarySearch(T[] a, int fromIndex, int toIndex, T key, Comparator<? super T> c) Searches a range of the specified array for the specified object using the binary search algorithm. The range must be sorted into ascending order according to the specified comparator (as by thesort(T[], int, int, Comparator)method) prior to making this call. If it is not sorted, the results are undefined. If the range contains multiple elements equal to the specified object, there is no guarantee which one will be found.- Type Parameters:
- T- the class of the objects in the array
- Parameters:
- a- the array to be searched
- fromIndex- the index of the first element (inclusive) to be searched
- toIndex- the index of the last element (exclusive) to be searched
- key- the value to be searched for
- c- the comparator by which the array is ordered. A- nullvalue indicates that the elements' natural ordering should be used.
- Returns:
- index of the search key, if it is contained in the array
         within the specified range;
         otherwise, (-(insertion point) - 1). The insertion point is defined as the point at which the key would be inserted into the array: the index of the first element in the range greater than the key, ortoIndexif all elements in the range are less than the specified key. Note that this guarantees that the return value will be >= 0 if and only if the key is found.
- Throws:
- ClassCastException- if the range contains elements that are not mutually comparable using the specified comparator, or the search key is not comparable to the elements in the range using this comparator.
- IllegalArgumentException- if- fromIndex > toIndex
- ArrayIndexOutOfBoundsException- if- fromIndex < 0 or toIndex > a.length
- Since:
- 1.6
 
- 
equalspublic static boolean equals(long[] a, long[] a2) Returnstrueif the two specified arrays of longs are equal to one another. Two arrays are considered equal if both arrays contain the same number of elements, and all corresponding pairs of elements in the two arrays are equal. In other words, two arrays are equal if they contain the same elements in the same order. Also, two array references are considered equal if both arenull.- Parameters:
- a- one array to be tested for equality
- a2- the other array to be tested for equality
- Returns:
- trueif the two arrays are equal
 
- 
equalspublic static boolean equals(long[] a, int aFromIndex, int aToIndex, long[] b, int bFromIndex, int bToIndex) Returns true if the two specified arrays of longs, over the specified ranges, are equal to one another.Two arrays are considered equal if the number of elements covered by each range is the same, and all corresponding pairs of elements over the specified ranges in the two arrays are equal. In other words, two arrays are equal if they contain, over the specified ranges, the same elements in the same order. - Parameters:
- a- the first array to be tested for equality
- aFromIndex- the index (inclusive) of the first element in the first array to be tested
- aToIndex- the index (exclusive) of the last element in the first array to be tested
- b- the second array to be tested for equality
- bFromIndex- the index (inclusive) of the first element in the second array to be tested
- bToIndex- the index (exclusive) of the last element in the second array to be tested
- Returns:
- trueif the two arrays, over the specified ranges, are equal
- Throws:
- IllegalArgumentException- if- aFromIndex > aToIndexor if- bFromIndex > bToIndex
- ArrayIndexOutOfBoundsException- if- aFromIndex < 0 or aToIndex > a.lengthor if- bFromIndex < 0 or bToIndex > b.length
- NullPointerException- if either array is- null
- Since:
- 9
 
- 
equalspublic static boolean equals(int[] a, int[] a2) Returnstrueif the two specified arrays of ints are equal to one another. Two arrays are considered equal if both arrays contain the same number of elements, and all corresponding pairs of elements in the two arrays are equal. In other words, two arrays are equal if they contain the same elements in the same order. Also, two array references are considered equal if both arenull.- Parameters:
- a- one array to be tested for equality
- a2- the other array to be tested for equality
- Returns:
- trueif the two arrays are equal
 
- 
equalspublic static boolean equals(int[] a, int aFromIndex, int aToIndex, int[] b, int bFromIndex, int bToIndex) Returns true if the two specified arrays of ints, over the specified ranges, are equal to one another.Two arrays are considered equal if the number of elements covered by each range is the same, and all corresponding pairs of elements over the specified ranges in the two arrays are equal. In other words, two arrays are equal if they contain, over the specified ranges, the same elements in the same order. - Parameters:
- a- the first array to be tested for equality
- aFromIndex- the index (inclusive) of the first element in the first array to be tested
- aToIndex- the index (exclusive) of the last element in the first array to be tested
- b- the second array to be tested for equality
- bFromIndex- the index (inclusive) of the first element in the second array to be tested
- bToIndex- the index (exclusive) of the last element in the second array to be tested
- Returns:
- trueif the two arrays, over the specified ranges, are equal
- Throws:
- IllegalArgumentException- if- aFromIndex > aToIndexor if- bFromIndex > bToIndex
- ArrayIndexOutOfBoundsException- if- aFromIndex < 0 or aToIndex > a.lengthor if- bFromIndex < 0 or bToIndex > b.length
- NullPointerException- if either array is- null
- Since:
- 9
 
- 
equalspublic static boolean equals(short[] a, short[] a2) Returnstrueif the two specified arrays of shorts are equal to one another. Two arrays are considered equal if both arrays contain the same number of elements, and all corresponding pairs of elements in the two arrays are equal. In other words, two arrays are equal if they contain the same elements in the same order. Also, two array references are considered equal if both arenull.- Parameters:
- a- one array to be tested for equality
- a2- the other array to be tested for equality
- Returns:
- trueif the two arrays are equal
 
- 
equalspublic static boolean equals(short[] a, int aFromIndex, int aToIndex, short[] b, int bFromIndex, int bToIndex) Returns true if the two specified arrays of shorts, over the specified ranges, are equal to one another.Two arrays are considered equal if the number of elements covered by each range is the same, and all corresponding pairs of elements over the specified ranges in the two arrays are equal. In other words, two arrays are equal if they contain, over the specified ranges, the same elements in the same order. - Parameters:
- a- the first array to be tested for equality
- aFromIndex- the index (inclusive) of the first element in the first array to be tested
- aToIndex- the index (exclusive) of the last element in the first array to be tested
- b- the second array to be tested for equality
- bFromIndex- the index (inclusive) of the first element in the second array to be tested
- bToIndex- the index (exclusive) of the last element in the second array to be tested
- Returns:
- trueif the two arrays, over the specified ranges, are equal
- Throws:
- IllegalArgumentException- if- aFromIndex > aToIndexor if- bFromIndex > bToIndex
- ArrayIndexOutOfBoundsException- if- aFromIndex < 0 or aToIndex > a.lengthor if- bFromIndex < 0 or bToIndex > b.length
- NullPointerException- if either array is- null
- Since:
- 9
 
- 
equalspublic static boolean equals(char[] a, char[] a2) Returnstrueif the two specified arrays of chars are equal to one another. Two arrays are considered equal if both arrays contain the same number of elements, and all corresponding pairs of elements in the two arrays are equal. In other words, two arrays are equal if they contain the same elements in the same order. Also, two array references are considered equal if both arenull.- Parameters:
- a- one array to be tested for equality
- a2- the other array to be tested for equality
- Returns:
- trueif the two arrays are equal
 
- 
equalspublic static boolean equals(char[] a, int aFromIndex, int aToIndex, char[] b, int bFromIndex, int bToIndex) Returns true if the two specified arrays of chars, over the specified ranges, are equal to one another.Two arrays are considered equal if the number of elements covered by each range is the same, and all corresponding pairs of elements over the specified ranges in the two arrays are equal. In other words, two arrays are equal if they contain, over the specified ranges, the same elements in the same order. - Parameters:
- a- the first array to be tested for equality
- aFromIndex- the index (inclusive) of the first element in the first array to be tested
- aToIndex- the index (exclusive) of the last element in the first array to be tested
- b- the second array to be tested for equality
- bFromIndex- the index (inclusive) of the first element in the second array to be tested
- bToIndex- the index (exclusive) of the last element in the second array to be tested
- Returns:
- trueif the two arrays, over the specified ranges, are equal
- Throws:
- IllegalArgumentException- if- aFromIndex > aToIndexor if- bFromIndex > bToIndex
- ArrayIndexOutOfBoundsException- if- aFromIndex < 0 or aToIndex > a.lengthor if- bFromIndex < 0 or bToIndex > b.length
- NullPointerException- if either array is- null
- Since:
- 9
 
- 
equalspublic static boolean equals(byte[] a, byte[] a2) Returnstrueif the two specified arrays of bytes are equal to one another. Two arrays are considered equal if both arrays contain the same number of elements, and all corresponding pairs of elements in the two arrays are equal. In other words, two arrays are equal if they contain the same elements in the same order. Also, two array references are considered equal if both arenull.- Parameters:
- a- one array to be tested for equality
- a2- the other array to be tested for equality
- Returns:
- trueif the two arrays are equal
 
- 
equalspublic static boolean equals(byte[] a, int aFromIndex, int aToIndex, byte[] b, int bFromIndex, int bToIndex) Returns true if the two specified arrays of bytes, over the specified ranges, are equal to one another.Two arrays are considered equal if the number of elements covered by each range is the same, and all corresponding pairs of elements over the specified ranges in the two arrays are equal. In other words, two arrays are equal if they contain, over the specified ranges, the same elements in the same order. - Parameters:
- a- the first array to be tested for equality
- aFromIndex- the index (inclusive) of the first element in the first array to be tested
- aToIndex- the index (exclusive) of the last element in the first array to be tested
- b- the second array to be tested for equality
- bFromIndex- the index (inclusive) of the first element in the second array to be tested
- bToIndex- the index (exclusive) of the last element in the second array to be tested
- Returns:
- trueif the two arrays, over the specified ranges, are equal
- Throws:
- IllegalArgumentException- if- aFromIndex > aToIndexor if- bFromIndex > bToIndex
- ArrayIndexOutOfBoundsException- if- aFromIndex < 0 or aToIndex > a.lengthor if- bFromIndex < 0 or bToIndex > b.length
- NullPointerException- if either array is- null
- Since:
- 9
 
- 
equalspublic static boolean equals(boolean[] a, boolean[] a2) Returnstrueif the two specified arrays of booleans are equal to one another. Two arrays are considered equal if both arrays contain the same number of elements, and all corresponding pairs of elements in the two arrays are equal. In other words, two arrays are equal if they contain the same elements in the same order. Also, two array references are considered equal if both arenull.- Parameters:
- a- one array to be tested for equality
- a2- the other array to be tested for equality
- Returns:
- trueif the two arrays are equal
 
- 
equalspublic static boolean equals(boolean[] a, int aFromIndex, int aToIndex, boolean[] b, int bFromIndex, int bToIndex) Returns true if the two specified arrays of booleans, over the specified ranges, are equal to one another.Two arrays are considered equal if the number of elements covered by each range is the same, and all corresponding pairs of elements over the specified ranges in the two arrays are equal. In other words, two arrays are equal if they contain, over the specified ranges, the same elements in the same order. - Parameters:
- a- the first array to be tested for equality
- aFromIndex- the index (inclusive) of the first element in the first array to be tested
- aToIndex- the index (exclusive) of the last element in the first array to be tested
- b- the second array to be tested for equality
- bFromIndex- the index (inclusive) of the first element in the second array to be tested
- bToIndex- the index (exclusive) of the last element in the second array to be tested
- Returns:
- trueif the two arrays, over the specified ranges, are equal
- Throws:
- IllegalArgumentException- if- aFromIndex > aToIndexor if- bFromIndex > bToIndex
- ArrayIndexOutOfBoundsException- if- aFromIndex < 0 or aToIndex > a.lengthor if- bFromIndex < 0 or bToIndex > b.length
- NullPointerException- if either array is- null
- Since:
- 9
 
- 
equalspublic static boolean equals(double[] a, double[] a2) Returnstrueif the two specified arrays of doubles are equal to one another. Two arrays are considered equal if both arrays contain the same number of elements, and all corresponding pairs of elements in the two arrays are equal. In other words, two arrays are equal if they contain the same elements in the same order. Also, two array references are considered equal if both arenull. Two doublesd1andd2are considered equal if:
 (Unlike theDouble.valueOf(d1).equals(Double.valueOf(d2))==operator, this method considersNaNequal to itself, and 0.0d unequal to -0.0d.)- Parameters:
- a- one array to be tested for equality
- a2- the other array to be tested for equality
- Returns:
- trueif the two arrays are equal
- See Also:
 
- 
equalspublic static boolean equals(double[] a, int aFromIndex, int aToIndex, double[] b, int bFromIndex, int bToIndex) Returns true if the two specified arrays of doubles, over the specified ranges, are equal to one another.Two arrays are considered equal if the number of elements covered by each range is the same, and all corresponding pairs of elements over the specified ranges in the two arrays are equal. In other words, two arrays are equal if they contain, over the specified ranges, the same elements in the same order. Two doubles d1andd2are considered equal if:
 (Unlike theDouble.valueOf(d1).equals(Double.valueOf(d2))==operator, this method considersNaNequal to itself, and 0.0d unequal to -0.0d.)- Parameters:
- a- the first array to be tested for equality
- aFromIndex- the index (inclusive) of the first element in the first array to be tested
- aToIndex- the index (exclusive) of the last element in the first array to be tested
- b- the second array to be tested for equality
- bFromIndex- the index (inclusive) of the first element in the second array to be tested
- bToIndex- the index (exclusive) of the last element in the second array to be tested
- Returns:
- trueif the two arrays, over the specified ranges, are equal
- Throws:
- IllegalArgumentException- if- aFromIndex > aToIndexor if- bFromIndex > bToIndex
- ArrayIndexOutOfBoundsException- if- aFromIndex < 0 or aToIndex > a.lengthor if- bFromIndex < 0 or bToIndex > b.length
- NullPointerException- if either array is- null
- Since:
- 9
- See Also:
 
- 
equalspublic static boolean equals(float[] a, float[] a2) Returnstrueif the two specified arrays of floats are equal to one another. Two arrays are considered equal if both arrays contain the same number of elements, and all corresponding pairs of elements in the two arrays are equal. In other words, two arrays are equal if they contain the same elements in the same order. Also, two array references are considered equal if both arenull. Two floatsf1andf2are considered equal if:
 (Unlike theFloat.valueOf(f1).equals(Float.valueOf(f2))==operator, this method considersNaNequal to itself, and 0.0f unequal to -0.0f.)- Parameters:
- a- one array to be tested for equality
- a2- the other array to be tested for equality
- Returns:
- trueif the two arrays are equal
- See Also:
 
- 
equalspublic static boolean equals(float[] a, int aFromIndex, int aToIndex, float[] b, int bFromIndex, int bToIndex) Returns true if the two specified arrays of floats, over the specified ranges, are equal to one another.Two arrays are considered equal if the number of elements covered by each range is the same, and all corresponding pairs of elements over the specified ranges in the two arrays are equal. In other words, two arrays are equal if they contain, over the specified ranges, the same elements in the same order. Two floats f1andf2are considered equal if:
 (Unlike theFloat.valueOf(f1).equals(Float.valueOf(f2))==operator, this method considersNaNequal to itself, and 0.0f unequal to -0.0f.)- Parameters:
- a- the first array to be tested for equality
- aFromIndex- the index (inclusive) of the first element in the first array to be tested
- aToIndex- the index (exclusive) of the last element in the first array to be tested
- b- the second array to be tested for equality
- bFromIndex- the index (inclusive) of the first element in the second array to be tested
- bToIndex- the index (exclusive) of the last element in the second array to be tested
- Returns:
- trueif the two arrays, over the specified ranges, are equal
- Throws:
- IllegalArgumentException- if- aFromIndex > aToIndexor if- bFromIndex > bToIndex
- ArrayIndexOutOfBoundsException- if- aFromIndex < 0 or aToIndex > a.lengthor if- bFromIndex < 0 or bToIndex > b.length
- NullPointerException- if either array is- null
- Since:
- 9
- See Also:
 
- 
equalsReturnstrueif the two specified arrays of Objects are equal to one another. The two arrays are considered equal if both arrays contain the same number of elements, and all corresponding pairs of elements in the two arrays are equal. Two objectse1ande2are considered equal ifObjects.equals(e1, e2). In other words, the two arrays are equal if they contain the same elements in the same order. Also, two array references are considered equal if both arenull.- Parameters:
- a- one array to be tested for equality
- a2- the other array to be tested for equality
- Returns:
- trueif the two arrays are equal
 
- 
equalspublic static boolean equals(Object[] a, int aFromIndex, int aToIndex, Object[] b, int bFromIndex, int bToIndex) Returns true if the two specified arrays of Objects, over the specified ranges, are equal to one another.Two arrays are considered equal if the number of elements covered by each range is the same, and all corresponding pairs of elements over the specified ranges in the two arrays are equal. In other words, two arrays are equal if they contain, over the specified ranges, the same elements in the same order. Two objects e1ande2are considered equal ifObjects.equals(e1, e2).- Parameters:
- a- the first array to be tested for equality
- aFromIndex- the index (inclusive) of the first element in the first array to be tested
- aToIndex- the index (exclusive) of the last element in the first array to be tested
- b- the second array to be tested for equality
- bFromIndex- the index (inclusive) of the first element in the second array to be tested
- bToIndex- the index (exclusive) of the last element in the second array to be tested
- Returns:
- trueif the two arrays, over the specified ranges, are equal
- Throws:
- IllegalArgumentException- if- aFromIndex > aToIndexor if- bFromIndex > bToIndex
- ArrayIndexOutOfBoundsException- if- aFromIndex < 0 or aToIndex > a.lengthor if- bFromIndex < 0 or bToIndex > b.length
- NullPointerException- if either array is- null
- Since:
- 9
 
- 
equalsReturnstrueif the two specified arrays of Objects are equal to one another.Two arrays are considered equal if both arrays contain the same number of elements, and all corresponding pairs of elements in the two arrays are equal. In other words, the two arrays are equal if they contain the same elements in the same order. Also, two array references are considered equal if both are null.Two objects e1ande2are considered equal if, given the specified comparator,cmp.compare(e1, e2) == 0.- Type Parameters:
- T- the type of array elements
- Parameters:
- a- one array to be tested for equality
- a2- the other array to be tested for equality
- cmp- the comparator to compare array elements
- Returns:
- trueif the two arrays are equal
- Throws:
- NullPointerException- if the comparator is- null
- Since:
- 9
 
- 
equalspublic static <T> boolean equals(T[] a, int aFromIndex, int aToIndex, T[] b, int bFromIndex, int bToIndex, Comparator<? super T> cmp) Returns true if the two specified arrays of Objects, over the specified ranges, are equal to one another.Two arrays are considered equal if the number of elements covered by each range is the same, and all corresponding pairs of elements over the specified ranges in the two arrays are equal. In other words, two arrays are equal if they contain, over the specified ranges, the same elements in the same order. Two objects e1ande2are considered equal if, given the specified comparator,cmp.compare(e1, e2) == 0.- Type Parameters:
- T- the type of array elements
- Parameters:
- a- the first array to be tested for equality
- aFromIndex- the index (inclusive) of the first element in the first array to be tested
- aToIndex- the index (exclusive) of the last element in the first array to be tested
- b- the second array to be tested for equality
- bFromIndex- the index (inclusive) of the first element in the second array to be tested
- bToIndex- the index (exclusive) of the last element in the second array to be tested
- cmp- the comparator to compare array elements
- Returns:
- trueif the two arrays, over the specified ranges, are equal
- Throws:
- IllegalArgumentException- if- aFromIndex > aToIndexor if- bFromIndex > bToIndex
- ArrayIndexOutOfBoundsException- if- aFromIndex < 0 or aToIndex > a.lengthor if- bFromIndex < 0 or bToIndex > b.length
- NullPointerException- if either array or the comparator is- null
- Since:
- 9
 
- 
fillpublic static void fill(long[] a, long val) Assigns the specified long value to each element of the specified array of longs.- Parameters:
- a- the array to be filled
- val- the value to be stored in all elements of the array
 
- 
fillpublic static void fill(long[] a, int fromIndex, int toIndex, long val) Assigns the specified long value to each element of the specified range of the specified array of longs. The range to be filled extends from indexfromIndex, inclusive, to indextoIndex, exclusive. (IffromIndex==toIndex, the range to be filled is empty.)- Parameters:
- a- the array to be filled
- fromIndex- the index of the first element (inclusive) to be filled with the specified value
- toIndex- the index of the last element (exclusive) to be filled with the specified value
- val- the value to be stored in all elements of the array
- Throws:
- IllegalArgumentException- if- fromIndex > toIndex
- ArrayIndexOutOfBoundsException- if- fromIndex < 0or- toIndex > a.length
 
- 
fillpublic static void fill(int[] a, int val) Assigns the specified int value to each element of the specified array of ints.- Parameters:
- a- the array to be filled
- val- the value to be stored in all elements of the array
 
- 
fillpublic static void fill(int[] a, int fromIndex, int toIndex, int val) Assigns the specified int value to each element of the specified range of the specified array of ints. The range to be filled extends from indexfromIndex, inclusive, to indextoIndex, exclusive. (IffromIndex==toIndex, the range to be filled is empty.)- Parameters:
- a- the array to be filled
- fromIndex- the index of the first element (inclusive) to be filled with the specified value
- toIndex- the index of the last element (exclusive) to be filled with the specified value
- val- the value to be stored in all elements of the array
- Throws:
- IllegalArgumentException- if- fromIndex > toIndex
- ArrayIndexOutOfBoundsException- if- fromIndex < 0or- toIndex > a.length
 
- 
fillpublic static void fill(short[] a, short val) Assigns the specified short value to each element of the specified array of shorts.- Parameters:
- a- the array to be filled
- val- the value to be stored in all elements of the array
 
- 
fillpublic static void fill(short[] a, int fromIndex, int toIndex, short val) Assigns the specified short value to each element of the specified range of the specified array of shorts. The range to be filled extends from indexfromIndex, inclusive, to indextoIndex, exclusive. (IffromIndex==toIndex, the range to be filled is empty.)- Parameters:
- a- the array to be filled
- fromIndex- the index of the first element (inclusive) to be filled with the specified value
- toIndex- the index of the last element (exclusive) to be filled with the specified value
- val- the value to be stored in all elements of the array
- Throws:
- IllegalArgumentException- if- fromIndex > toIndex
- ArrayIndexOutOfBoundsException- if- fromIndex < 0or- toIndex > a.length
 
- 
fillpublic static void fill(char[] a, char val) Assigns the specified char value to each element of the specified array of chars.- Parameters:
- a- the array to be filled
- val- the value to be stored in all elements of the array
 
- 
fillpublic static void fill(char[] a, int fromIndex, int toIndex, char val) Assigns the specified char value to each element of the specified range of the specified array of chars. The range to be filled extends from indexfromIndex, inclusive, to indextoIndex, exclusive. (IffromIndex==toIndex, the range to be filled is empty.)- Parameters:
- a- the array to be filled
- fromIndex- the index of the first element (inclusive) to be filled with the specified value
- toIndex- the index of the last element (exclusive) to be filled with the specified value
- val- the value to be stored in all elements of the array
- Throws:
- IllegalArgumentException- if- fromIndex > toIndex
- ArrayIndexOutOfBoundsException- if- fromIndex < 0or- toIndex > a.length
 
- 
fillpublic static void fill(byte[] a, byte val) Assigns the specified byte value to each element of the specified array of bytes.- Parameters:
- a- the array to be filled
- val- the value to be stored in all elements of the array
 
- 
fillpublic static void fill(byte[] a, int fromIndex, int toIndex, byte val) Assigns the specified byte value to each element of the specified range of the specified array of bytes. The range to be filled extends from indexfromIndex, inclusive, to indextoIndex, exclusive. (IffromIndex==toIndex, the range to be filled is empty.)- Parameters:
- a- the array to be filled
- fromIndex- the index of the first element (inclusive) to be filled with the specified value
- toIndex- the index of the last element (exclusive) to be filled with the specified value
- val- the value to be stored in all elements of the array
- Throws:
- IllegalArgumentException- if- fromIndex > toIndex
- ArrayIndexOutOfBoundsException- if- fromIndex < 0or- toIndex > a.length
 
- 
fillpublic static void fill(boolean[] a, boolean val) Assigns the specified boolean value to each element of the specified array of booleans.- Parameters:
- a- the array to be filled
- val- the value to be stored in all elements of the array
 
- 
fillpublic static void fill(boolean[] a, int fromIndex, int toIndex, boolean val) Assigns the specified boolean value to each element of the specified range of the specified array of booleans. The range to be filled extends from indexfromIndex, inclusive, to indextoIndex, exclusive. (IffromIndex==toIndex, the range to be filled is empty.)- Parameters:
- a- the array to be filled
- fromIndex- the index of the first element (inclusive) to be filled with the specified value
- toIndex- the index of the last element (exclusive) to be filled with the specified value
- val- the value to be stored in all elements of the array
- Throws:
- IllegalArgumentException- if- fromIndex > toIndex
- ArrayIndexOutOfBoundsException- if- fromIndex < 0or- toIndex > a.length
 
- 
fillpublic static void fill(double[] a, double val) Assigns the specified double value to each element of the specified array of doubles.- Parameters:
- a- the array to be filled
- val- the value to be stored in all elements of the array
 
- 
fillpublic static void fill(double[] a, int fromIndex, int toIndex, double val) Assigns the specified double value to each element of the specified range of the specified array of doubles. The range to be filled extends from indexfromIndex, inclusive, to indextoIndex, exclusive. (IffromIndex==toIndex, the range to be filled is empty.)- Parameters:
- a- the array to be filled
- fromIndex- the index of the first element (inclusive) to be filled with the specified value
- toIndex- the index of the last element (exclusive) to be filled with the specified value
- val- the value to be stored in all elements of the array
- Throws:
- IllegalArgumentException- if- fromIndex > toIndex
- ArrayIndexOutOfBoundsException- if- fromIndex < 0or- toIndex > a.length
 
- 
fillpublic static void fill(float[] a, float val) Assigns the specified float value to each element of the specified array of floats.- Parameters:
- a- the array to be filled
- val- the value to be stored in all elements of the array
 
- 
fillpublic static void fill(float[] a, int fromIndex, int toIndex, float val) Assigns the specified float value to each element of the specified range of the specified array of floats. The range to be filled extends from indexfromIndex, inclusive, to indextoIndex, exclusive. (IffromIndex==toIndex, the range to be filled is empty.)- Parameters:
- a- the array to be filled
- fromIndex- the index of the first element (inclusive) to be filled with the specified value
- toIndex- the index of the last element (exclusive) to be filled with the specified value
- val- the value to be stored in all elements of the array
- Throws:
- IllegalArgumentException- if- fromIndex > toIndex
- ArrayIndexOutOfBoundsException- if- fromIndex < 0or- toIndex > a.length
 
- 
fillAssigns the specified Object reference to each element of the specified array of Objects.- Parameters:
- a- the array to be filled
- val- the value to be stored in all elements of the array
- Throws:
- ArrayStoreException- if the specified value is not of a runtime type that can be stored in the specified array
 
- 
fillAssigns the specified Object reference to each element of the specified range of the specified array of Objects. The range to be filled extends from indexfromIndex, inclusive, to indextoIndex, exclusive. (IffromIndex==toIndex, the range to be filled is empty.)- Parameters:
- a- the array to be filled
- fromIndex- the index of the first element (inclusive) to be filled with the specified value
- toIndex- the index of the last element (exclusive) to be filled with the specified value
- val- the value to be stored in all elements of the array
- Throws:
- IllegalArgumentException- if- fromIndex > toIndex
- ArrayIndexOutOfBoundsException- if- fromIndex < 0or- toIndex > a.length
- ArrayStoreException- if the specified value is not of a runtime type that can be stored in the specified array
 
- 
copyOfpublic static <T> T[] copyOf(T[] original, int newLength) Copies the specified array, truncating or padding with nulls (if necessary) so the copy has the specified length. For all indices that are valid in both the original array and the copy, the two arrays will contain identical values. For any indices that are valid in the copy but not the original, the copy will containnull. Such indices will exist if and only if the specified length is greater than that of the original array. The resulting array is of exactly the same class as the original array.- Type Parameters:
- T- the class of the objects in the array
- Parameters:
- original- the array to be copied
- newLength- the length of the copy to be returned
- Returns:
- a copy of the original array, truncated or padded with nulls to obtain the specified length
- Throws:
- NegativeArraySizeException- if- newLengthis negative
- NullPointerException- if- originalis null
- Since:
- 1.6
 
- 
copyOfCopies the specified array, truncating or padding with nulls (if necessary) so the copy has the specified length. For all indices that are valid in both the original array and the copy, the two arrays will contain identical values. For any indices that are valid in the copy but not the original, the copy will containnull. Such indices will exist if and only if the specified length is greater than that of the original array. The resulting array is of the classnewType.- Type Parameters:
- T- the class of the objects in the returned array
- U- the class of the objects in the original array
- Parameters:
- original- the array to be copied
- newLength- the length of the copy to be returned
- newType- the class of the copy to be returned
- Returns:
- a copy of the original array, truncated or padded with nulls to obtain the specified length
- Throws:
- NegativeArraySizeException- if- newLengthis negative
- NullPointerException- if- originalis null
- ArrayStoreException- if an element copied from- originalis not of a runtime type that can be stored in an array of class- newType
- Since:
- 1.6
 
- 
copyOfpublic static byte[] copyOf(byte[] original, int newLength) Copies the specified array, truncating or padding with zeros (if necessary) so the copy has the specified length. For all indices that are valid in both the original array and the copy, the two arrays will contain identical values. For any indices that are valid in the copy but not the original, the copy will contain(byte)0. Such indices will exist if and only if the specified length is greater than that of the original array.- Parameters:
- original- the array to be copied
- newLength- the length of the copy to be returned
- Returns:
- a copy of the original array, truncated or padded with zeros to obtain the specified length
- Throws:
- NegativeArraySizeException- if- newLengthis negative
- NullPointerException- if- originalis null
- Since:
- 1.6
 
- 
copyOfpublic static short[] copyOf(short[] original, int newLength) Copies the specified array, truncating or padding with zeros (if necessary) so the copy has the specified length. For all indices that are valid in both the original array and the copy, the two arrays will contain identical values. For any indices that are valid in the copy but not the original, the copy will contain(short)0. Such indices will exist if and only if the specified length is greater than that of the original array.- Parameters:
- original- the array to be copied
- newLength- the length of the copy to be returned
- Returns:
- a copy of the original array, truncated or padded with zeros to obtain the specified length
- Throws:
- NegativeArraySizeException- if- newLengthis negative
- NullPointerException- if- originalis null
- Since:
- 1.6
 
- 
copyOfpublic static int[] copyOf(int[] original, int newLength) Copies the specified array, truncating or padding with zeros (if necessary) so the copy has the specified length. For all indices that are valid in both the original array and the copy, the two arrays will contain identical values. For any indices that are valid in the copy but not the original, the copy will contain0. Such indices will exist if and only if the specified length is greater than that of the original array.- Parameters:
- original- the array to be copied
- newLength- the length of the copy to be returned
- Returns:
- a copy of the original array, truncated or padded with zeros to obtain the specified length
- Throws:
- NegativeArraySizeException- if- newLengthis negative
- NullPointerException- if- originalis null
- Since:
- 1.6
 
- 
copyOfpublic static long[] copyOf(long[] original, int newLength) Copies the specified array, truncating or padding with zeros (if necessary) so the copy has the specified length. For all indices that are valid in both the original array and the copy, the two arrays will contain identical values. For any indices that are valid in the copy but not the original, the copy will contain0L. Such indices will exist if and only if the specified length is greater than that of the original array.- Parameters:
- original- the array to be copied
- newLength- the length of the copy to be returned
- Returns:
- a copy of the original array, truncated or padded with zeros to obtain the specified length
- Throws:
- NegativeArraySizeException- if- newLengthis negative
- NullPointerException- if- originalis null
- Since:
- 1.6
 
- 
copyOfpublic static char[] copyOf(char[] original, int newLength) Copies the specified array, truncating or padding with null characters (if necessary) so the copy has the specified length. For all indices that are valid in both the original array and the copy, the two arrays will contain identical values. For any indices that are valid in the copy but not the original, the copy will contain'\u0000'. Such indices will exist if and only if the specified length is greater than that of the original array.- Parameters:
- original- the array to be copied
- newLength- the length of the copy to be returned
- Returns:
- a copy of the original array, truncated or padded with null characters to obtain the specified length
- Throws:
- NegativeArraySizeException- if- newLengthis negative
- NullPointerException- if- originalis null
- Since:
- 1.6
 
- 
copyOfpublic static float[] copyOf(float[] original, int newLength) Copies the specified array, truncating or padding with zeros (if necessary) so the copy has the specified length. For all indices that are valid in both the original array and the copy, the two arrays will contain identical values. For any indices that are valid in the copy but not the original, the copy will contain0f. Such indices will exist if and only if the specified length is greater than that of the original array.- Parameters:
- original- the array to be copied
- newLength- the length of the copy to be returned
- Returns:
- a copy of the original array, truncated or padded with zeros to obtain the specified length
- Throws:
- NegativeArraySizeException- if- newLengthis negative
- NullPointerException- if- originalis null
- Since:
- 1.6
 
- 
copyOfpublic static double[] copyOf(double[] original, int newLength) Copies the specified array, truncating or padding with zeros (if necessary) so the copy has the specified length. For all indices that are valid in both the original array and the copy, the two arrays will contain identical values. For any indices that are valid in the copy but not the original, the copy will contain0d. Such indices will exist if and only if the specified length is greater than that of the original array.- Parameters:
- original- the array to be copied
- newLength- the length of the copy to be returned
- Returns:
- a copy of the original array, truncated or padded with zeros to obtain the specified length
- Throws:
- NegativeArraySizeException- if- newLengthis negative
- NullPointerException- if- originalis null
- Since:
- 1.6
 
- 
copyOfpublic static boolean[] copyOf(boolean[] original, int newLength) Copies the specified array, truncating or padding withfalse(if necessary) so the copy has the specified length. For all indices that are valid in both the original array and the copy, the two arrays will contain identical values. For any indices that are valid in the copy but not the original, the copy will containfalse. Such indices will exist if and only if the specified length is greater than that of the original array.- Parameters:
- original- the array to be copied
- newLength- the length of the copy to be returned
- Returns:
- a copy of the original array, truncated or padded with false elements to obtain the specified length
- Throws:
- NegativeArraySizeException- if- newLengthis negative
- NullPointerException- if- originalis null
- Since:
- 1.6
 
- 
copyOfRangepublic static <T> T[] copyOfRange(T[] original, int from, int to) Copies the specified range of the specified array into a new array. The initial index of the range (from) must lie between zero andoriginal.length, inclusive. The value atoriginal[from]is placed into the initial element of the copy (unlessfrom == original.lengthorfrom == to). Values from subsequent elements in the original array are placed into subsequent elements in the copy. The final index of the range (to), which must be greater than or equal tofrom, may be greater thanoriginal.length, in which casenullis placed in all elements of the copy whose index is greater than or equal tooriginal.length - from. The length of the returned array will beto - from.The resulting array is of exactly the same class as the original array. - Type Parameters:
- T- the class of the objects in the array
- Parameters:
- original- the array from which a range is to be copied
- from- the initial index of the range to be copied, inclusive
- to- the final index of the range to be copied, exclusive. (This index may lie outside the array.)
- Returns:
- a new array containing the specified range from the original array, truncated or padded with nulls to obtain the required length
- Throws:
- ArrayIndexOutOfBoundsException- if- from < 0or- from > original.length
- IllegalArgumentException- if- from > to
- NullPointerException- if- originalis null
- Since:
- 1.6
 
- 
copyOfRangeCopies the specified range of the specified array into a new array. The initial index of the range (from) must lie between zero andoriginal.length, inclusive. The value atoriginal[from]is placed into the initial element of the copy (unlessfrom == original.lengthorfrom == to). Values from subsequent elements in the original array are placed into subsequent elements in the copy. The final index of the range (to), which must be greater than or equal tofrom, may be greater thanoriginal.length, in which casenullis placed in all elements of the copy whose index is greater than or equal tooriginal.length - from. The length of the returned array will beto - from. The resulting array is of the classnewType.- Type Parameters:
- T- the class of the objects in the returned array
- U- the class of the objects in the original array
- Parameters:
- original- the array from which a range is to be copied
- from- the initial index of the range to be copied, inclusive
- to- the final index of the range to be copied, exclusive. (This index may lie outside the array.)
- newType- the class of the copy to be returned
- Returns:
- a new array containing the specified range from the original array, truncated or padded with nulls to obtain the required length
- Throws:
- ArrayIndexOutOfBoundsException- if- from < 0or- from > original.length
- IllegalArgumentException- if- from > to
- NullPointerException- if- originalis null
- ArrayStoreException- if an element copied from- originalis not of a runtime type that can be stored in an array of class- newType.
- Since:
- 1.6
 
- 
copyOfRangepublic static byte[] copyOfRange(byte[] original, int from, int to) Copies the specified range of the specified array into a new array. The initial index of the range (from) must lie between zero andoriginal.length, inclusive. The value atoriginal[from]is placed into the initial element of the copy (unlessfrom == original.lengthorfrom == to). Values from subsequent elements in the original array are placed into subsequent elements in the copy. The final index of the range (to), which must be greater than or equal tofrom, may be greater thanoriginal.length, in which case(byte)0is placed in all elements of the copy whose index is greater than or equal tooriginal.length - from. The length of the returned array will beto - from.- Parameters:
- original- the array from which a range is to be copied
- from- the initial index of the range to be copied, inclusive
- to- the final index of the range to be copied, exclusive. (This index may lie outside the array.)
- Returns:
- a new array containing the specified range from the original array, truncated or padded with zeros to obtain the required length
- Throws:
- ArrayIndexOutOfBoundsException- if- from < 0or- from > original.length
- IllegalArgumentException- if- from > to
- NullPointerException- if- originalis null
- Since:
- 1.6
 
- 
copyOfRangepublic static short[] copyOfRange(short[] original, int from, int to) Copies the specified range of the specified array into a new array. The initial index of the range (from) must lie between zero andoriginal.length, inclusive. The value atoriginal[from]is placed into the initial element of the copy (unlessfrom == original.lengthorfrom == to). Values from subsequent elements in the original array are placed into subsequent elements in the copy. The final index of the range (to), which must be greater than or equal tofrom, may be greater thanoriginal.length, in which case(short)0is placed in all elements of the copy whose index is greater than or equal tooriginal.length - from. The length of the returned array will beto - from.- Parameters:
- original- the array from which a range is to be copied
- from- the initial index of the range to be copied, inclusive
- to- the final index of the range to be copied, exclusive. (This index may lie outside the array.)
- Returns:
- a new array containing the specified range from the original array, truncated or padded with zeros to obtain the required length
- Throws:
- ArrayIndexOutOfBoundsException- if- from < 0or- from > original.length
- IllegalArgumentException- if- from > to
- NullPointerException- if- originalis null
- Since:
- 1.6
 
- 
copyOfRangepublic static int[] copyOfRange(int[] original, int from, int to) Copies the specified range of the specified array into a new array. The initial index of the range (from) must lie between zero andoriginal.length, inclusive. The value atoriginal[from]is placed into the initial element of the copy (unlessfrom == original.lengthorfrom == to). Values from subsequent elements in the original array are placed into subsequent elements in the copy. The final index of the range (to), which must be greater than or equal tofrom, may be greater thanoriginal.length, in which case0is placed in all elements of the copy whose index is greater than or equal tooriginal.length - from. The length of the returned array will beto - from.- Parameters:
- original- the array from which a range is to be copied
- from- the initial index of the range to be copied, inclusive
- to- the final index of the range to be copied, exclusive. (This index may lie outside the array.)
- Returns:
- a new array containing the specified range from the original array, truncated or padded with zeros to obtain the required length
- Throws:
- ArrayIndexOutOfBoundsException- if- from < 0or- from > original.length
- IllegalArgumentException- if- from > to
- NullPointerException- if- originalis null
- Since:
- 1.6
 
- 
copyOfRangepublic static long[] copyOfRange(long[] original, int from, int to) Copies the specified range of the specified array into a new array. The initial index of the range (from) must lie between zero andoriginal.length, inclusive. The value atoriginal[from]is placed into the initial element of the copy (unlessfrom == original.lengthorfrom == to). Values from subsequent elements in the original array are placed into subsequent elements in the copy. The final index of the range (to), which must be greater than or equal tofrom, may be greater thanoriginal.length, in which case0Lis placed in all elements of the copy whose index is greater than or equal tooriginal.length - from. The length of the returned array will beto - from.- Parameters:
- original- the array from which a range is to be copied
- from- the initial index of the range to be copied, inclusive
- to- the final index of the range to be copied, exclusive. (This index may lie outside the array.)
- Returns:
- a new array containing the specified range from the original array, truncated or padded with zeros to obtain the required length
- Throws:
- ArrayIndexOutOfBoundsException- if- from < 0or- from > original.length
- IllegalArgumentException- if- from > to
- NullPointerException- if- originalis null
- Since:
- 1.6
 
- 
copyOfRangepublic static char[] copyOfRange(char[] original, int from, int to) Copies the specified range of the specified array into a new array. The initial index of the range (from) must lie between zero andoriginal.length, inclusive. The value atoriginal[from]is placed into the initial element of the copy (unlessfrom == original.lengthorfrom == to). Values from subsequent elements in the original array are placed into subsequent elements in the copy. The final index of the range (to), which must be greater than or equal tofrom, may be greater thanoriginal.length, in which case'\u0000'is placed in all elements of the copy whose index is greater than or equal tooriginal.length - from. The length of the returned array will beto - from.- Parameters:
- original- the array from which a range is to be copied
- from- the initial index of the range to be copied, inclusive
- to- the final index of the range to be copied, exclusive. (This index may lie outside the array.)
- Returns:
- a new array containing the specified range from the original array, truncated or padded with null characters to obtain the required length
- Throws:
- ArrayIndexOutOfBoundsException- if- from < 0or- from > original.length
- IllegalArgumentException- if- from > to
- NullPointerException- if- originalis null
- Since:
- 1.6
 
- 
copyOfRangepublic static float[] copyOfRange(float[] original, int from, int to) Copies the specified range of the specified array into a new array. The initial index of the range (from) must lie between zero andoriginal.length, inclusive. The value atoriginal[from]is placed into the initial element of the copy (unlessfrom == original.lengthorfrom == to). Values from subsequent elements in the original array are placed into subsequent elements in the copy. The final index of the range (to), which must be greater than or equal tofrom, may be greater thanoriginal.length, in which case0fis placed in all elements of the copy whose index is greater than or equal tooriginal.length - from. The length of the returned array will beto - from.- Parameters:
- original- the array from which a range is to be copied
- from- the initial index of the range to be copied, inclusive
- to- the final index of the range to be copied, exclusive. (This index may lie outside the array.)
- Returns:
- a new array containing the specified range from the original array, truncated or padded with zeros to obtain the required length
- Throws:
- ArrayIndexOutOfBoundsException- if- from < 0or- from > original.length
- IllegalArgumentException- if- from > to
- NullPointerException- if- originalis null
- Since:
- 1.6
 
- 
copyOfRangepublic static double[] copyOfRange(double[] original, int from, int to) Copies the specified range of the specified array into a new array. The initial index of the range (from) must lie between zero andoriginal.length, inclusive. The value atoriginal[from]is placed into the initial element of the copy (unlessfrom == original.lengthorfrom == to). Values from subsequent elements in the original array are placed into subsequent elements in the copy. The final index of the range (to), which must be greater than or equal tofrom, may be greater thanoriginal.length, in which case0dis placed in all elements of the copy whose index is greater than or equal tooriginal.length - from. The length of the returned array will beto - from.- Parameters:
- original- the array from which a range is to be copied
- from- the initial index of the range to be copied, inclusive
- to- the final index of the range to be copied, exclusive. (This index may lie outside the array.)
- Returns:
- a new array containing the specified range from the original array, truncated or padded with zeros to obtain the required length
- Throws:
- ArrayIndexOutOfBoundsException- if- from < 0or- from > original.length
- IllegalArgumentException- if- from > to
- NullPointerException- if- originalis null
- Since:
- 1.6
 
- 
copyOfRangepublic static boolean[] copyOfRange(boolean[] original, int from, int to) Copies the specified range of the specified array into a new array. The initial index of the range (from) must lie between zero andoriginal.length, inclusive. The value atoriginal[from]is placed into the initial element of the copy (unlessfrom == original.lengthorfrom == to). Values from subsequent elements in the original array are placed into subsequent elements in the copy. The final index of the range (to), which must be greater than or equal tofrom, may be greater thanoriginal.length, in which casefalseis placed in all elements of the copy whose index is greater than or equal tooriginal.length - from. The length of the returned array will beto - from.- Parameters:
- original- the array from which a range is to be copied
- from- the initial index of the range to be copied, inclusive
- to- the final index of the range to be copied, exclusive. (This index may lie outside the array.)
- Returns:
- a new array containing the specified range from the original array, truncated or padded with false elements to obtain the required length
- Throws:
- ArrayIndexOutOfBoundsException- if- from < 0or- from > original.length
- IllegalArgumentException- if- from > to
- NullPointerException- if- originalis null
- Since:
- 1.6
 
- 
asListReturns a fixed-size list backed by the specified array. Changes made to the array will be visible in the returned list, and changes made to the list will be visible in the array. The returned list isSerializableand implementsRandomAccess.The returned list implements the optional Collectionmethods, except those that would change the size of the returned list. Those methods leave the list unchanged and throwUnsupportedOperationException.If the specified array's actual component type differs from the type parameter T, this can result in operations on the returned list throwing an ArrayStoreException.- API Note:
- This method acts as bridge between array-based and collection-based
 APIs, in combination with Collection.toArray().This method provides a way to wrap an existing array: Integer[] numbers = ... ... List<Integer> values = Arrays.asList(numbers);This method also provides a convenient way to create a fixed-size list initialized to contain several elements: List<String> stooges = Arrays.asList("Larry", "Moe", "Curly");The list returned by this method is modifiable. To create an unmodifiable list, use Collections.unmodifiableListor Unmodifiable Lists.
- Type Parameters:
- T- the class of the objects in the array
- Parameters:
- a- the array by which the list will be backed
- Returns:
- a list view of the specified array
- Throws:
- NullPointerException- if the specified array is- null
 
- 
hashCodepublic static int hashCode(long[] a) Returns a hash code based on the contents of the specified array. For any twolongarraysaandbsuch thatArrays.equals(a, b), it is also the case thatArrays.hashCode(a) == Arrays.hashCode(b).The value returned by this method is the same value that would be obtained by invoking the hashCodemethod on aListcontaining a sequence ofLonginstances representing the elements ofain the same order. Ifaisnull, this method returns 0.- Parameters:
- a- the array whose hash value to compute
- Returns:
- a content-based hash code for a
- Since:
- 1.5
 
- 
hashCodepublic static int hashCode(int[] a) Returns a hash code based on the contents of the specified array. For any two non-nullintarraysaandbsuch thatArrays.equals(a, b), it is also the case thatArrays.hashCode(a) == Arrays.hashCode(b).The value returned by this method is the same value that would be obtained by invoking the hashCodemethod on aListcontaining a sequence ofIntegerinstances representing the elements ofain the same order. Ifaisnull, this method returns 0.- Parameters:
- a- the array whose hash value to compute
- Returns:
- a content-based hash code for a
- Since:
- 1.5
 
- 
hashCodepublic static int hashCode(short[] a) Returns a hash code based on the contents of the specified array. For any twoshortarraysaandbsuch thatArrays.equals(a, b), it is also the case thatArrays.hashCode(a) == Arrays.hashCode(b).The value returned by this method is the same value that would be obtained by invoking the hashCodemethod on aListcontaining a sequence ofShortinstances representing the elements ofain the same order. Ifaisnull, this method returns 0.- Parameters:
- a- the array whose hash value to compute
- Returns:
- a content-based hash code for a
- Since:
- 1.5
 
- 
hashCodepublic static int hashCode(char[] a) Returns a hash code based on the contents of the specified array. For any twochararraysaandbsuch thatArrays.equals(a, b), it is also the case thatArrays.hashCode(a) == Arrays.hashCode(b).The value returned by this method is the same value that would be obtained by invoking the hashCodemethod on aListcontaining a sequence ofCharacterinstances representing the elements ofain the same order. Ifaisnull, this method returns 0.- Parameters:
- a- the array whose hash value to compute
- Returns:
- a content-based hash code for a
- Since:
- 1.5
 
- 
hashCodepublic static int hashCode(byte[] a) Returns a hash code based on the contents of the specified array. For any twobytearraysaandbsuch thatArrays.equals(a, b), it is also the case thatArrays.hashCode(a) == Arrays.hashCode(b).The value returned by this method is the same value that would be obtained by invoking the hashCodemethod on aListcontaining a sequence ofByteinstances representing the elements ofain the same order. Ifaisnull, this method returns 0.- Parameters:
- a- the array whose hash value to compute
- Returns:
- a content-based hash code for a
- Since:
- 1.5
 
- 
hashCodepublic static int hashCode(boolean[] a) Returns a hash code based on the contents of the specified array. For any twobooleanarraysaandbsuch thatArrays.equals(a, b), it is also the case thatArrays.hashCode(a) == Arrays.hashCode(b).The value returned by this method is the same value that would be obtained by invoking the hashCodemethod on aListcontaining a sequence ofBooleaninstances representing the elements ofain the same order. Ifaisnull, this method returns 0.- Parameters:
- a- the array whose hash value to compute
- Returns:
- a content-based hash code for a
- Since:
- 1.5
 
- 
hashCodepublic static int hashCode(float[] a) Returns a hash code based on the contents of the specified array. For any twofloatarraysaandbsuch thatArrays.equals(a, b), it is also the case thatArrays.hashCode(a) == Arrays.hashCode(b).The value returned by this method is the same value that would be obtained by invoking the hashCodemethod on aListcontaining a sequence ofFloatinstances representing the elements ofain the same order. Ifaisnull, this method returns 0.- Parameters:
- a- the array whose hash value to compute
- Returns:
- a content-based hash code for a
- Since:
- 1.5
 
- 
hashCodepublic static int hashCode(double[] a) Returns a hash code based on the contents of the specified array. For any twodoublearraysaandbsuch thatArrays.equals(a, b), it is also the case thatArrays.hashCode(a) == Arrays.hashCode(b).The value returned by this method is the same value that would be obtained by invoking the hashCodemethod on aListcontaining a sequence ofDoubleinstances representing the elements ofain the same order. Ifaisnull, this method returns 0.- Parameters:
- a- the array whose hash value to compute
- Returns:
- a content-based hash code for a
- Since:
- 1.5
 
- 
hashCodeReturns a hash code based on the contents of the specified array. If the array contains other arrays as elements, the hash code is based on their identities rather than their contents. It is therefore acceptable to invoke this method on an array that contains itself as an element, either directly or indirectly through one or more levels of arrays.For any two arrays aandbsuch thatArrays.equals(a, b), it is also the case thatArrays.hashCode(a) == Arrays.hashCode(b).The value returned by this method is equal to the value that would be returned by Arrays.asList(a).hashCode(), unlessaisnull, in which case0is returned.- Parameters:
- a- the array whose content-based hash code to compute
- Returns:
- a content-based hash code for a
- Since:
- 1.5
- See Also:
 
- 
deepHashCodeReturns a hash code based on the "deep contents" of the specified array. If the array contains other arrays as elements, the hash code is based on their contents and so on, ad infinitum. It is therefore unacceptable to invoke this method on an array that contains itself as an element, either directly or indirectly through one or more levels of arrays. The behavior of such an invocation is undefined.For any two arrays aandbsuch thatArrays.deepEquals(a, b), it is also the case thatArrays.deepHashCode(a) == Arrays.deepHashCode(b).The computation of the value returned by this method is similar to that of the value returned by List.hashCode()on a list containing the same elements asain the same order, with one difference: If an elementeofais itself an array, its hash code is computed not by callinge.hashCode(), but as by calling the appropriate overloading ofArrays.hashCode(e)ifeis an array of a primitive type, or as by callingArrays.deepHashCode(e)recursively ifeis an array of a reference type. Ifaisnull, this method returns 0.- Parameters:
- a- the array whose deep-content-based hash code to compute
- Returns:
- a deep-content-based hash code for a
- Since:
- 1.5
- See Also:
 
- 
deepEqualsReturnstrueif the two specified arrays are deeply equal to one another. Unlike theequals(Object[],Object[])method, this method is appropriate for use with nested arrays of arbitrary depth.Two array references are considered deeply equal if both are null, or if they refer to arrays that contain the same number of elements and all corresponding pairs of elements in the two arrays are deeply equal.Two possibly nullelementse1ande2are deeply equal if any of the following conditions hold:-  e1ande2are both arrays of object reference types, andArrays.deepEquals(e1, e2) would return true
-  e1ande2are arrays of the same primitive type, and the appropriate overloading ofArrays.equals(e1, e2)would return true.
-  e1 == e2
-  e1.equals(e2)would return true.
 nullelements at any depth.If either of the specified arrays contain themselves as elements either directly or indirectly through one or more levels of arrays, the behavior of this method is undefined. - Parameters:
- a1- one array to be tested for equality
- a2- the other array to be tested for equality
- Returns:
- trueif the two arrays are equal
- Since:
- 1.5
- See Also:
 
-  
- 
toStringReturns a string representation of the contents of the specified array. The string representation consists of a list of the array's elements, enclosed in square brackets ("[]"). Adjacent elements are separated by the characters", "(a comma followed by a space). Elements are converted to strings as byString.valueOf(long). Returns"null"ifaisnull.- Parameters:
- a- the array whose string representation to return
- Returns:
- a string representation of a
- Since:
- 1.5
 
- 
toStringReturns a string representation of the contents of the specified array. The string representation consists of a list of the array's elements, enclosed in square brackets ("[]"). Adjacent elements are separated by the characters", "(a comma followed by a space). Elements are converted to strings as byString.valueOf(int). Returns"null"ifaisnull.- Parameters:
- a- the array whose string representation to return
- Returns:
- a string representation of a
- Since:
- 1.5
 
- 
toStringReturns a string representation of the contents of the specified array. The string representation consists of a list of the array's elements, enclosed in square brackets ("[]"). Adjacent elements are separated by the characters", "(a comma followed by a space). Elements are converted to strings as byString.valueOf(short). Returns"null"ifaisnull.- Parameters:
- a- the array whose string representation to return
- Returns:
- a string representation of a
- Since:
- 1.5
 
- 
toStringReturns a string representation of the contents of the specified array. The string representation consists of a list of the array's elements, enclosed in square brackets ("[]"). Adjacent elements are separated by the characters", "(a comma followed by a space). Elements are converted to strings as byString.valueOf(char). Returns"null"ifaisnull.- Parameters:
- a- the array whose string representation to return
- Returns:
- a string representation of a
- Since:
- 1.5
 
- 
toStringReturns a string representation of the contents of the specified array. The string representation consists of a list of the array's elements, enclosed in square brackets ("[]"). Adjacent elements are separated by the characters", "(a comma followed by a space). Elements are converted to strings as byString.valueOf(byte). Returns"null"ifaisnull.- Parameters:
- a- the array whose string representation to return
- Returns:
- a string representation of a
- Since:
- 1.5
 
- 
toStringReturns a string representation of the contents of the specified array. The string representation consists of a list of the array's elements, enclosed in square brackets ("[]"). Adjacent elements are separated by the characters", "(a comma followed by a space). Elements are converted to strings as byString.valueOf(boolean). Returns"null"ifaisnull.- Parameters:
- a- the array whose string representation to return
- Returns:
- a string representation of a
- Since:
- 1.5
 
- 
toStringReturns a string representation of the contents of the specified array. The string representation consists of a list of the array's elements, enclosed in square brackets ("[]"). Adjacent elements are separated by the characters", "(a comma followed by a space). Elements are converted to strings as byString.valueOf(float). Returns"null"ifaisnull.- Parameters:
- a- the array whose string representation to return
- Returns:
- a string representation of a
- Since:
- 1.5
 
- 
toStringReturns a string representation of the contents of the specified array. The string representation consists of a list of the array's elements, enclosed in square brackets ("[]"). Adjacent elements are separated by the characters", "(a comma followed by a space). Elements are converted to strings as byString.valueOf(double). Returns"null"ifaisnull.- Parameters:
- a- the array whose string representation to return
- Returns:
- a string representation of a
- Since:
- 1.5
 
- 
toStringReturns a string representation of the contents of the specified array. If the array contains other arrays as elements, they are converted to strings by theObject.toString()method inherited fromObject, which describes their identities rather than their contents.The value returned by this method is equal to the value that would be returned by Arrays.asList(a).toString(), unlessaisnull, in which case"null"is returned.- Parameters:
- a- the array whose string representation to return
- Returns:
- a string representation of a
- Since:
- 1.5
- See Also:
 
- 
deepToStringReturns a string representation of the "deep contents" of the specified array. If the array contains other arrays as elements, the string representation contains their contents and so on. This method is designed for converting multidimensional arrays to strings.The string representation consists of a list of the array's elements, enclosed in square brackets ( "[]"). Adjacent elements are separated by the characters", "(a comma followed by a space). Elements are converted to strings as byString.valueOf(Object), unless they are themselves arrays.If an element eis an array of a primitive type, it is converted to a string as by invoking the appropriate overloading ofArrays.toString(e). If an elementeis an array of a reference type, it is converted to a string as by invoking this method recursively.To avoid infinite recursion, if the specified array contains itself as an element, or contains an indirect reference to itself through one or more levels of arrays, the self-reference is converted to the string "[...]". For example, an array containing only a reference to itself would be rendered as"[[...]]".This method returns "null"if the specified array isnull.- Parameters:
- a- the array whose string representation to return
- Returns:
- a string representation of a
- Since:
- 1.5
- See Also:
 
- 
setAllSet all elements of the specified array, using the provided generator function to compute each element.If the generator function throws an exception, it is relayed to the caller and the array is left in an indeterminate state. - API Note:
- Setting a subrange of an array, using a generator function to compute
 each element, can be written as follows:
 IntStream.range(startInclusive, endExclusive) .forEach(i -> array[i] = generator.apply(i));
- Type Parameters:
- T- type of elements of the array
- Parameters:
- array- array to be initialized
- generator- a function accepting an index and producing the desired value for that position
- Throws:
- NullPointerException- if the generator is null
- Since:
- 1.8
 
- 
parallelSetAllSet all elements of the specified array, in parallel, using the provided generator function to compute each element.If the generator function throws an exception, an unchecked exception is thrown from parallelSetAlland the array is left in an indeterminate state.- API Note:
- Setting a subrange of an array, in parallel, using a generator function
 to compute each element, can be written as follows:
 IntStream.range(startInclusive, endExclusive) .parallel() .forEach(i -> array[i] = generator.apply(i));
- Type Parameters:
- T- type of elements of the array
- Parameters:
- array- array to be initialized
- generator- a function accepting an index and producing the desired value for that position
- Throws:
- NullPointerException- if the generator is null
- Since:
- 1.8
 
- 
setAllSet all elements of the specified array, using the provided generator function to compute each element.If the generator function throws an exception, it is relayed to the caller and the array is left in an indeterminate state. - API Note:
- Setting a subrange of an array, using a generator function to compute
 each element, can be written as follows:
 IntStream.range(startInclusive, endExclusive) .forEach(i -> array[i] = generator.applyAsInt(i));
- Parameters:
- array- array to be initialized
- generator- a function accepting an index and producing the desired value for that position
- Throws:
- NullPointerException- if the generator is null
- Since:
- 1.8
 
- 
parallelSetAllSet all elements of the specified array, in parallel, using the provided generator function to compute each element.If the generator function throws an exception, an unchecked exception is thrown from parallelSetAlland the array is left in an indeterminate state.- API Note:
- Setting a subrange of an array, in parallel, using a generator function
 to compute each element, can be written as follows:
 IntStream.range(startInclusive, endExclusive) .parallel() .forEach(i -> array[i] = generator.applyAsInt(i));
- Parameters:
- array- array to be initialized
- generator- a function accepting an index and producing the desired value for that position
- Throws:
- NullPointerException- if the generator is null
- Since:
- 1.8
 
- 
setAllSet all elements of the specified array, using the provided generator function to compute each element.If the generator function throws an exception, it is relayed to the caller and the array is left in an indeterminate state. - API Note:
- Setting a subrange of an array, using a generator function to compute
 each element, can be written as follows:
 IntStream.range(startInclusive, endExclusive) .forEach(i -> array[i] = generator.applyAsLong(i));
- Parameters:
- array- array to be initialized
- generator- a function accepting an index and producing the desired value for that position
- Throws:
- NullPointerException- if the generator is null
- Since:
- 1.8
 
- 
parallelSetAllSet all elements of the specified array, in parallel, using the provided generator function to compute each element.If the generator function throws an exception, an unchecked exception is thrown from parallelSetAlland the array is left in an indeterminate state.- API Note:
- Setting a subrange of an array, in parallel, using a generator function
 to compute each element, can be written as follows:
 IntStream.range(startInclusive, endExclusive) .parallel() .forEach(i -> array[i] = generator.applyAsLong(i));
- Parameters:
- array- array to be initialized
- generator- a function accepting an index and producing the desired value for that position
- Throws:
- NullPointerException- if the generator is null
- Since:
- 1.8
 
- 
setAllSet all elements of the specified array, using the provided generator function to compute each element.If the generator function throws an exception, it is relayed to the caller and the array is left in an indeterminate state. - API Note:
- Setting a subrange of an array, using a generator function to compute
 each element, can be written as follows:
 IntStream.range(startInclusive, endExclusive) .forEach(i -> array[i] = generator.applyAsDouble(i));
- Parameters:
- array- array to be initialized
- generator- a function accepting an index and producing the desired value for that position
- Throws:
- NullPointerException- if the generator is null
- Since:
- 1.8
 
- 
parallelSetAllSet all elements of the specified array, in parallel, using the provided generator function to compute each element.If the generator function throws an exception, an unchecked exception is thrown from parallelSetAlland the array is left in an indeterminate state.- API Note:
- Setting a subrange of an array, in parallel, using a generator function
 to compute each element, can be written as follows:
 IntStream.range(startInclusive, endExclusive) .parallel() .forEach(i -> array[i] = generator.applyAsDouble(i));
- Parameters:
- array- array to be initialized
- generator- a function accepting an index and producing the desired value for that position
- Throws:
- NullPointerException- if the generator is null
- Since:
- 1.8
 
- 
spliteratorReturns aSpliteratorcovering all of the specified array.The spliterator reports Spliterator.SIZED,Spliterator.SUBSIZED,Spliterator.ORDERED, andSpliterator.IMMUTABLE.- Type Parameters:
- T- type of elements
- Parameters:
- array- the array, assumed to be unmodified during use
- Returns:
- a spliterator for the array elements
- Since:
- 1.8
 
- 
spliteratorReturns aSpliteratorcovering the specified range of the specified array.The spliterator reports Spliterator.SIZED,Spliterator.SUBSIZED,Spliterator.ORDERED, andSpliterator.IMMUTABLE.- Type Parameters:
- T- type of elements
- Parameters:
- array- the array, assumed to be unmodified during use
- startInclusive- the first index to cover, inclusive
- endExclusive- index immediately past the last index to cover
- Returns:
- a spliterator for the array elements
- Throws:
- ArrayIndexOutOfBoundsException- if- startInclusiveis negative,- endExclusiveis less than- startInclusive, or- endExclusiveis greater than the array size
- Since:
- 1.8
 
- 
spliteratorReturns aSpliterator.OfIntcovering all of the specified array.The spliterator reports Spliterator.SIZED,Spliterator.SUBSIZED,Spliterator.ORDERED, andSpliterator.IMMUTABLE.- Parameters:
- array- the array, assumed to be unmodified during use
- Returns:
- a spliterator for the array elements
- Since:
- 1.8
 
- 
spliteratorReturns aSpliterator.OfIntcovering the specified range of the specified array.The spliterator reports Spliterator.SIZED,Spliterator.SUBSIZED,Spliterator.ORDERED, andSpliterator.IMMUTABLE.- Parameters:
- array- the array, assumed to be unmodified during use
- startInclusive- the first index to cover, inclusive
- endExclusive- index immediately past the last index to cover
- Returns:
- a spliterator for the array elements
- Throws:
- ArrayIndexOutOfBoundsException- if- startInclusiveis negative,- endExclusiveis less than- startInclusive, or- endExclusiveis greater than the array size
- Since:
- 1.8
 
- 
spliteratorReturns aSpliterator.OfLongcovering all of the specified array.The spliterator reports Spliterator.SIZED,Spliterator.SUBSIZED,Spliterator.ORDERED, andSpliterator.IMMUTABLE.- Parameters:
- array- the array, assumed to be unmodified during use
- Returns:
- the spliterator for the array elements
- Since:
- 1.8
 
- 
spliteratorReturns aSpliterator.OfLongcovering the specified range of the specified array.The spliterator reports Spliterator.SIZED,Spliterator.SUBSIZED,Spliterator.ORDERED, andSpliterator.IMMUTABLE.- Parameters:
- array- the array, assumed to be unmodified during use
- startInclusive- the first index to cover, inclusive
- endExclusive- index immediately past the last index to cover
- Returns:
- a spliterator for the array elements
- Throws:
- ArrayIndexOutOfBoundsException- if- startInclusiveis negative,- endExclusiveis less than- startInclusive, or- endExclusiveis greater than the array size
- Since:
- 1.8
 
- 
spliteratorReturns aSpliterator.OfDoublecovering all of the specified array.The spliterator reports Spliterator.SIZED,Spliterator.SUBSIZED,Spliterator.ORDERED, andSpliterator.IMMUTABLE.- Parameters:
- array- the array, assumed to be unmodified during use
- Returns:
- a spliterator for the array elements
- Since:
- 1.8
 
- 
spliteratorpublic static Spliterator.OfDouble spliterator(double[] array, int startInclusive, int endExclusive) Returns aSpliterator.OfDoublecovering the specified range of the specified array.The spliterator reports Spliterator.SIZED,Spliterator.SUBSIZED,Spliterator.ORDERED, andSpliterator.IMMUTABLE.- Parameters:
- array- the array, assumed to be unmodified during use
- startInclusive- the first index to cover, inclusive
- endExclusive- index immediately past the last index to cover
- Returns:
- a spliterator for the array elements
- Throws:
- ArrayIndexOutOfBoundsException- if- startInclusiveis negative,- endExclusiveis less than- startInclusive, or- endExclusiveis greater than the array size
- Since:
- 1.8
 
- 
streamReturns a sequentialStreamwith the specified array as its source.- Type Parameters:
- T- The type of the array elements
- Parameters:
- array- The array, assumed to be unmodified during use
- Returns:
- a Streamfor the array
- Since:
- 1.8
 
- 
streamReturns a sequentialStreamwith the specified range of the specified array as its source.- Type Parameters:
- T- the type of the array elements
- Parameters:
- array- the array, assumed to be unmodified during use
- startInclusive- the first index to cover, inclusive
- endExclusive- index immediately past the last index to cover
- Returns:
- a Streamfor the array range
- Throws:
- ArrayIndexOutOfBoundsException- if- startInclusiveis negative,- endExclusiveis less than- startInclusive, or- endExclusiveis greater than the array size
- Since:
- 1.8
 
- 
streamReturns a sequentialIntStreamwith the specified array as its source.- Parameters:
- array- the array, assumed to be unmodified during use
- Returns:
- an IntStreamfor the array
- Since:
- 1.8
 
- 
streamReturns a sequentialIntStreamwith the specified range of the specified array as its source.- Parameters:
- array- the array, assumed to be unmodified during use
- startInclusive- the first index to cover, inclusive
- endExclusive- index immediately past the last index to cover
- Returns:
- an IntStreamfor the array range
- Throws:
- ArrayIndexOutOfBoundsException- if- startInclusiveis negative,- endExclusiveis less than- startInclusive, or- endExclusiveis greater than the array size
- Since:
- 1.8
 
- 
streamReturns a sequentialLongStreamwith the specified array as its source.- Parameters:
- array- the array, assumed to be unmodified during use
- Returns:
- a LongStreamfor the array
- Since:
- 1.8
 
- 
streamReturns a sequentialLongStreamwith the specified range of the specified array as its source.- Parameters:
- array- the array, assumed to be unmodified during use
- startInclusive- the first index to cover, inclusive
- endExclusive- index immediately past the last index to cover
- Returns:
- a LongStreamfor the array range
- Throws:
- ArrayIndexOutOfBoundsException- if- startInclusiveis negative,- endExclusiveis less than- startInclusive, or- endExclusiveis greater than the array size
- Since:
- 1.8
 
- 
streamReturns a sequentialDoubleStreamwith the specified array as its source.- Parameters:
- array- the array, assumed to be unmodified during use
- Returns:
- a DoubleStreamfor the array
- Since:
- 1.8
 
- 
streamReturns a sequentialDoubleStreamwith the specified range of the specified array as its source.- Parameters:
- array- the array, assumed to be unmodified during use
- startInclusive- the first index to cover, inclusive
- endExclusive- index immediately past the last index to cover
- Returns:
- a DoubleStreamfor the array range
- Throws:
- ArrayIndexOutOfBoundsException- if- startInclusiveis negative,- endExclusiveis less than- startInclusive, or- endExclusiveis greater than the array size
- Since:
- 1.8
 
- 
comparepublic static int compare(boolean[] a, boolean[] b) Compares twobooleanarrays lexicographically.If the two arrays share a common prefix then the lexicographic comparison is the result of comparing two elements, as if by Boolean.compare(boolean, boolean), at an index within the respective arrays that is the prefix length. Otherwise, one array is a proper prefix of the other and, lexicographic comparison is the result of comparing the two array lengths. (Seemismatch(boolean[], boolean[])for the definition of a common and proper prefix.)A nullarray reference is considered lexicographically less than a non-nullarray reference. Twonullarray references are considered equal.The comparison is consistent with equals, more specifically the following holds for arraysaandb:Arrays.equals(a, b) == (Arrays.compare(a, b) == 0)- API Note:
- This method behaves as if (for non- - nullarray references):- int i = Arrays.mismatch(a, b); if (i >= 0 && i < Math.min(a.length, b.length)) return Boolean.compare(a[i], b[i]); return a.length - b.length;
- Parameters:
- a- the first array to compare
- b- the second array to compare
- Returns:
- the value 0if the first and second array are equal and contain the same elements in the same order; a value less than0if the first array is lexicographically less than the second array; and a value greater than0if the first array is lexicographically greater than the second array
- Since:
- 9
 
- 
comparepublic static int compare(boolean[] a, int aFromIndex, int aToIndex, boolean[] b, int bFromIndex, int bToIndex) Compares twobooleanarrays lexicographically over the specified ranges.If the two arrays, over the specified ranges, share a common prefix then the lexicographic comparison is the result of comparing two elements, as if by Boolean.compare(boolean, boolean), at a relative index within the respective arrays that is the length of the prefix. Otherwise, one array is a proper prefix of the other and, lexicographic comparison is the result of comparing the two range lengths. (Seemismatch(boolean[], int, int, boolean[], int, int)for the definition of a common and proper prefix.)The comparison is consistent with equals, more specifically the following holds for arraysaandbwith specified ranges [aFromIndex,aToIndex) and [bFromIndex,bToIndex) respectively:Arrays.equals(a, aFromIndex, aToIndex, b, bFromIndex, bToIndex) == (Arrays.compare(a, aFromIndex, aToIndex, b, bFromIndex, bToIndex) == 0)- API Note:
- This method behaves as if: - int i = Arrays.mismatch(a, aFromIndex, aToIndex, b, bFromIndex, bToIndex); if (i >= 0 && i < Math.min(aToIndex - aFromIndex, bToIndex - bFromIndex)) return Boolean.compare(a[aFromIndex + i], b[bFromIndex + i]); return (aToIndex - aFromIndex) - (bToIndex - bFromIndex);
- Parameters:
- a- the first array to compare
- aFromIndex- the index (inclusive) of the first element in the first array to be compared
- aToIndex- the index (exclusive) of the last element in the first array to be compared
- b- the second array to compare
- bFromIndex- the index (inclusive) of the first element in the second array to be compared
- bToIndex- the index (exclusive) of the last element in the second array to be compared
- Returns:
- the value 0if, over the specified ranges, the first and second array are equal and contain the same elements in the same order; a value less than0if, over the specified ranges, the first array is lexicographically less than the second array; and a value greater than0if, over the specified ranges, the first array is lexicographically greater than the second array
- Throws:
- IllegalArgumentException- if- aFromIndex > aToIndexor if- bFromIndex > bToIndex
- ArrayIndexOutOfBoundsException- if- aFromIndex < 0 or aToIndex > a.lengthor if- bFromIndex < 0 or bToIndex > b.length
- NullPointerException- if either array is- null
- Since:
- 9
 
- 
comparepublic static int compare(byte[] a, byte[] b) Compares twobytearrays lexicographically.If the two arrays share a common prefix then the lexicographic comparison is the result of comparing two elements, as if by Byte.compare(byte, byte), at an index within the respective arrays that is the prefix length. Otherwise, one array is a proper prefix of the other and, lexicographic comparison is the result of comparing the two array lengths. (Seemismatch(byte[], byte[])for the definition of a common and proper prefix.)A nullarray reference is considered lexicographically less than a non-nullarray reference. Twonullarray references are considered equal.The comparison is consistent with equals, more specifically the following holds for arraysaandb:Arrays.equals(a, b) == (Arrays.compare(a, b) == 0)- API Note:
- This method behaves as if (for non- - nullarray references):- int i = Arrays.mismatch(a, b); if (i >= 0 && i < Math.min(a.length, b.length)) return Byte.compare(a[i], b[i]); return a.length - b.length;
- Parameters:
- a- the first array to compare
- b- the second array to compare
- Returns:
- the value 0if the first and second array are equal and contain the same elements in the same order; a value less than0if the first array is lexicographically less than the second array; and a value greater than0if the first array is lexicographically greater than the second array
- Since:
- 9
 
- 
comparepublic static int compare(byte[] a, int aFromIndex, int aToIndex, byte[] b, int bFromIndex, int bToIndex) Compares twobytearrays lexicographically over the specified ranges.If the two arrays, over the specified ranges, share a common prefix then the lexicographic comparison is the result of comparing two elements, as if by Byte.compare(byte, byte), at a relative index within the respective arrays that is the length of the prefix. Otherwise, one array is a proper prefix of the other and, lexicographic comparison is the result of comparing the two range lengths. (Seemismatch(byte[], int, int, byte[], int, int)for the definition of a common and proper prefix.)The comparison is consistent with equals, more specifically the following holds for arraysaandbwith specified ranges [aFromIndex,aToIndex) and [bFromIndex,bToIndex) respectively:Arrays.equals(a, aFromIndex, aToIndex, b, bFromIndex, bToIndex) == (Arrays.compare(a, aFromIndex, aToIndex, b, bFromIndex, bToIndex) == 0)- API Note:
- This method behaves as if: - int i = Arrays.mismatch(a, aFromIndex, aToIndex, b, bFromIndex, bToIndex); if (i >= 0 && i < Math.min(aToIndex - aFromIndex, bToIndex - bFromIndex)) return Byte.compare(a[aFromIndex + i], b[bFromIndex + i]); return (aToIndex - aFromIndex) - (bToIndex - bFromIndex);
- Parameters:
- a- the first array to compare
- aFromIndex- the index (inclusive) of the first element in the first array to be compared
- aToIndex- the index (exclusive) of the last element in the first array to be compared
- b- the second array to compare
- bFromIndex- the index (inclusive) of the first element in the second array to be compared
- bToIndex- the index (exclusive) of the last element in the second array to be compared
- Returns:
- the value 0if, over the specified ranges, the first and second array are equal and contain the same elements in the same order; a value less than0if, over the specified ranges, the first array is lexicographically less than the second array; and a value greater than0if, over the specified ranges, the first array is lexicographically greater than the second array
- Throws:
- IllegalArgumentException- if- aFromIndex > aToIndexor if- bFromIndex > bToIndex
- ArrayIndexOutOfBoundsException- if- aFromIndex < 0 or aToIndex > a.lengthor if- bFromIndex < 0 or bToIndex > b.length
- NullPointerException- if either array is- null
- Since:
- 9
 
- 
compareUnsignedpublic static int compareUnsigned(byte[] a, byte[] b) Compares twobytearrays lexicographically, numerically treating elements as unsigned.If the two arrays share a common prefix then the lexicographic comparison is the result of comparing two elements, as if by Byte.compareUnsigned(byte, byte), at an index within the respective arrays that is the prefix length. Otherwise, one array is a proper prefix of the other and, lexicographic comparison is the result of comparing the two array lengths. (Seemismatch(byte[], byte[])for the definition of a common and proper prefix.)A nullarray reference is considered lexicographically less than a non-nullarray reference. Twonullarray references are considered equal.- API Note:
- This method behaves as if (for non- - nullarray references):- int i = Arrays.mismatch(a, b); if (i >= 0 && i < Math.min(a.length, b.length)) return Byte.compareUnsigned(a[i], b[i]); return a.length - b.length;
- Parameters:
- a- the first array to compare
- b- the second array to compare
- Returns:
- the value 0if the first and second array are equal and contain the same elements in the same order; a value less than0if the first array is lexicographically less than the second array; and a value greater than0if the first array is lexicographically greater than the second array
- Since:
- 9
 
- 
compareUnsignedpublic static int compareUnsigned(byte[] a, int aFromIndex, int aToIndex, byte[] b, int bFromIndex, int bToIndex) Compares twobytearrays lexicographically over the specified ranges, numerically treating elements as unsigned.If the two arrays, over the specified ranges, share a common prefix then the lexicographic comparison is the result of comparing two elements, as if by Byte.compareUnsigned(byte, byte), at a relative index within the respective arrays that is the length of the prefix. Otherwise, one array is a proper prefix of the other and, lexicographic comparison is the result of comparing the two range lengths. (Seemismatch(byte[], int, int, byte[], int, int)for the definition of a common and proper prefix.)- API Note:
- This method behaves as if: - int i = Arrays.mismatch(a, aFromIndex, aToIndex, b, bFromIndex, bToIndex); if (i >= 0 && i < Math.min(aToIndex - aFromIndex, bToIndex - bFromIndex)) return Byte.compareUnsigned(a[aFromIndex + i], b[bFromIndex + i]); return (aToIndex - aFromIndex) - (bToIndex - bFromIndex);
- Parameters:
- a- the first array to compare
- aFromIndex- the index (inclusive) of the first element in the first array to be compared
- aToIndex- the index (exclusive) of the last element in the first array to be compared
- b- the second array to compare
- bFromIndex- the index (inclusive) of the first element in the second array to be compared
- bToIndex- the index (exclusive) of the last element in the second array to be compared
- Returns:
- the value 0if, over the specified ranges, the first and second array are equal and contain the same elements in the same order; a value less than0if, over the specified ranges, the first array is lexicographically less than the second array; and a value greater than0if, over the specified ranges, the first array is lexicographically greater than the second array
- Throws:
- IllegalArgumentException- if- aFromIndex > aToIndexor if- bFromIndex > bToIndex
- ArrayIndexOutOfBoundsException- if- aFromIndex < 0 or aToIndex > a.lengthor if- bFromIndex < 0 or bToIndex > b.length
- NullPointerException- if either array is null
- Since:
- 9
 
- 
comparepublic static int compare(short[] a, short[] b) Compares twoshortarrays lexicographically.If the two arrays share a common prefix then the lexicographic comparison is the result of comparing two elements, as if by Short.compare(short, short), at an index within the respective arrays that is the prefix length. Otherwise, one array is a proper prefix of the other and, lexicographic comparison is the result of comparing the two array lengths. (Seemismatch(short[], short[])for the definition of a common and proper prefix.)A nullarray reference is considered lexicographically less than a non-nullarray reference. Twonullarray references are considered equal.The comparison is consistent with equals, more specifically the following holds for arraysaandb:Arrays.equals(a, b) == (Arrays.compare(a, b) == 0)- API Note:
- This method behaves as if (for non- - nullarray references):- int i = Arrays.mismatch(a, b); if (i >= 0 && i < Math.min(a.length, b.length)) return Short.compare(a[i], b[i]); return a.length - b.length;
- Parameters:
- a- the first array to compare
- b- the second array to compare
- Returns:
- the value 0if the first and second array are equal and contain the same elements in the same order; a value less than0if the first array is lexicographically less than the second array; and a value greater than0if the first array is lexicographically greater than the second array
- Since:
- 9
 
- 
comparepublic static int compare(short[] a, int aFromIndex, int aToIndex, short[] b, int bFromIndex, int bToIndex) Compares twoshortarrays lexicographically over the specified ranges.If the two arrays, over the specified ranges, share a common prefix then the lexicographic comparison is the result of comparing two elements, as if by Short.compare(short, short), at a relative index within the respective arrays that is the length of the prefix. Otherwise, one array is a proper prefix of the other and, lexicographic comparison is the result of comparing the two range lengths. (Seemismatch(short[], int, int, short[], int, int)for the definition of a common and proper prefix.)The comparison is consistent with equals, more specifically the following holds for arraysaandbwith specified ranges [aFromIndex,aToIndex) and [bFromIndex,bToIndex) respectively:Arrays.equals(a, aFromIndex, aToIndex, b, bFromIndex, bToIndex) == (Arrays.compare(a, aFromIndex, aToIndex, b, bFromIndex, bToIndex) == 0)- API Note:
- This method behaves as if: - int i = Arrays.mismatch(a, aFromIndex, aToIndex, b, bFromIndex, bToIndex); if (i >= 0 && i < Math.min(aToIndex - aFromIndex, bToIndex - bFromIndex)) return Short.compare(a[aFromIndex + i], b[bFromIndex + i]); return (aToIndex - aFromIndex) - (bToIndex - bFromIndex);
- Parameters:
- a- the first array to compare
- aFromIndex- the index (inclusive) of the first element in the first array to be compared
- aToIndex- the index (exclusive) of the last element in the first array to be compared
- b- the second array to compare
- bFromIndex- the index (inclusive) of the first element in the second array to be compared
- bToIndex- the index (exclusive) of the last element in the second array to be compared
- Returns:
- the value 0if, over the specified ranges, the first and second array are equal and contain the same elements in the same order; a value less than0if, over the specified ranges, the first array is lexicographically less than the second array; and a value greater than0if, over the specified ranges, the first array is lexicographically greater than the second array
- Throws:
- IllegalArgumentException- if- aFromIndex > aToIndexor if- bFromIndex > bToIndex
- ArrayIndexOutOfBoundsException- if- aFromIndex < 0 or aToIndex > a.lengthor if- bFromIndex < 0 or bToIndex > b.length
- NullPointerException- if either array is- null
- Since:
- 9
 
- 
compareUnsignedpublic static int compareUnsigned(short[] a, short[] b) Compares twoshortarrays lexicographically, numerically treating elements as unsigned.If the two arrays share a common prefix then the lexicographic comparison is the result of comparing two elements, as if by Short.compareUnsigned(short, short), at an index within the respective arrays that is the prefix length. Otherwise, one array is a proper prefix of the other and, lexicographic comparison is the result of comparing the two array lengths. (Seemismatch(short[], short[])for the definition of a common and proper prefix.)A nullarray reference is considered lexicographically less than a non-nullarray reference. Twonullarray references are considered equal.- API Note:
- This method behaves as if (for non- - nullarray references):- int i = Arrays.mismatch(a, b); if (i >= 0 && i < Math.min(a.length, b.length)) return Short.compareUnsigned(a[i], b[i]); return a.length - b.length;
- Parameters:
- a- the first array to compare
- b- the second array to compare
- Returns:
- the value 0if the first and second array are equal and contain the same elements in the same order; a value less than0if the first array is lexicographically less than the second array; and a value greater than0if the first array is lexicographically greater than the second array
- Since:
- 9
 
- 
compareUnsignedpublic static int compareUnsigned(short[] a, int aFromIndex, int aToIndex, short[] b, int bFromIndex, int bToIndex) Compares twoshortarrays lexicographically over the specified ranges, numerically treating elements as unsigned.If the two arrays, over the specified ranges, share a common prefix then the lexicographic comparison is the result of comparing two elements, as if by Short.compareUnsigned(short, short), at a relative index within the respective arrays that is the length of the prefix. Otherwise, one array is a proper prefix of the other and, lexicographic comparison is the result of comparing the two range lengths. (Seemismatch(short[], int, int, short[], int, int)for the definition of a common and proper prefix.)- API Note:
- This method behaves as if: - int i = Arrays.mismatch(a, aFromIndex, aToIndex, b, bFromIndex, bToIndex); if (i >= 0 && i < Math.min(aToIndex - aFromIndex, bToIndex - bFromIndex)) return Short.compareUnsigned(a[aFromIndex + i], b[bFromIndex + i]); return (aToIndex - aFromIndex) - (bToIndex - bFromIndex);
- Parameters:
- a- the first array to compare
- aFromIndex- the index (inclusive) of the first element in the first array to be compared
- aToIndex- the index (exclusive) of the last element in the first array to be compared
- b- the second array to compare
- bFromIndex- the index (inclusive) of the first element in the second array to be compared
- bToIndex- the index (exclusive) of the last element in the second array to be compared
- Returns:
- the value 0if, over the specified ranges, the first and second array are equal and contain the same elements in the same order; a value less than0if, over the specified ranges, the first array is lexicographically less than the second array; and a value greater than0if, over the specified ranges, the first array is lexicographically greater than the second array
- Throws:
- IllegalArgumentException- if- aFromIndex > aToIndexor if- bFromIndex > bToIndex
- ArrayIndexOutOfBoundsException- if- aFromIndex < 0 or aToIndex > a.lengthor if- bFromIndex < 0 or bToIndex > b.length
- NullPointerException- if either array is null
- Since:
- 9
 
- 
comparepublic static int compare(char[] a, char[] b) Compares twochararrays lexicographically.If the two arrays share a common prefix then the lexicographic comparison is the result of comparing two elements, as if by Character.compare(char, char), at an index within the respective arrays that is the prefix length. Otherwise, one array is a proper prefix of the other and, lexicographic comparison is the result of comparing the two array lengths. (Seemismatch(char[], char[])for the definition of a common and proper prefix.)A nullarray reference is considered lexicographically less than a non-nullarray reference. Twonullarray references are considered equal.The comparison is consistent with equals, more specifically the following holds for arraysaandb:Arrays.equals(a, b) == (Arrays.compare(a, b) == 0)- API Note:
- This method behaves as if (for non- - nullarray references):- int i = Arrays.mismatch(a, b); if (i >= 0 && i < Math.min(a.length, b.length)) return Character.compare(a[i], b[i]); return a.length - b.length;
- Parameters:
- a- the first array to compare
- b- the second array to compare
- Returns:
- the value 0if the first and second array are equal and contain the same elements in the same order; a value less than0if the first array is lexicographically less than the second array; and a value greater than0if the first array is lexicographically greater than the second array
- Since:
- 9
 
- 
comparepublic static int compare(char[] a, int aFromIndex, int aToIndex, char[] b, int bFromIndex, int bToIndex) Compares twochararrays lexicographically over the specified ranges.If the two arrays, over the specified ranges, share a common prefix then the lexicographic comparison is the result of comparing two elements, as if by Character.compare(char, char), at a relative index within the respective arrays that is the length of the prefix. Otherwise, one array is a proper prefix of the other and, lexicographic comparison is the result of comparing the two range lengths. (Seemismatch(char[], int, int, char[], int, int)for the definition of a common and proper prefix.)The comparison is consistent with equals, more specifically the following holds for arraysaandbwith specified ranges [aFromIndex,aToIndex) and [bFromIndex,bToIndex) respectively:Arrays.equals(a, aFromIndex, aToIndex, b, bFromIndex, bToIndex) == (Arrays.compare(a, aFromIndex, aToIndex, b, bFromIndex, bToIndex) == 0)- API Note:
- This method behaves as if: - int i = Arrays.mismatch(a, aFromIndex, aToIndex, b, bFromIndex, bToIndex); if (i >= 0 && i < Math.min(aToIndex - aFromIndex, bToIndex - bFromIndex)) return Character.compare(a[aFromIndex + i], b[bFromIndex + i]); return (aToIndex - aFromIndex) - (bToIndex - bFromIndex);
- Parameters:
- a- the first array to compare
- aFromIndex- the index (inclusive) of the first element in the first array to be compared
- aToIndex- the index (exclusive) of the last element in the first array to be compared
- b- the second array to compare
- bFromIndex- the index (inclusive) of the first element in the second array to be compared
- bToIndex- the index (exclusive) of the last element in the second array to be compared
- Returns:
- the value 0if, over the specified ranges, the first and second array are equal and contain the same elements in the same order; a value less than0if, over the specified ranges, the first array is lexicographically less than the second array; and a value greater than0if, over the specified ranges, the first array is lexicographically greater than the second array
- Throws:
- IllegalArgumentException- if- aFromIndex > aToIndexor if- bFromIndex > bToIndex
- ArrayIndexOutOfBoundsException- if- aFromIndex < 0 or aToIndex > a.lengthor if- bFromIndex < 0 or bToIndex > b.length
- NullPointerException- if either array is- null
- Since:
- 9
 
- 
comparepublic static int compare(int[] a, int[] b) Compares twointarrays lexicographically.If the two arrays share a common prefix then the lexicographic comparison is the result of comparing two elements, as if by Integer.compare(int, int), at an index within the respective arrays that is the prefix length. Otherwise, one array is a proper prefix of the other and, lexicographic comparison is the result of comparing the two array lengths. (Seemismatch(int[], int[])for the definition of a common and proper prefix.)A nullarray reference is considered lexicographically less than a non-nullarray reference. Twonullarray references are considered equal.The comparison is consistent with equals, more specifically the following holds for arraysaandb:Arrays.equals(a, b) == (Arrays.compare(a, b) == 0)- API Note:
- This method behaves as if (for non- - nullarray references):- int i = Arrays.mismatch(a, b); if (i >= 0 && i < Math.min(a.length, b.length)) return Integer.compare(a[i], b[i]); return a.length - b.length;
- Parameters:
- a- the first array to compare
- b- the second array to compare
- Returns:
- the value 0if the first and second array are equal and contain the same elements in the same order; a value less than0if the first array is lexicographically less than the second array; and a value greater than0if the first array is lexicographically greater than the second array
- Since:
- 9
 
- 
comparepublic static int compare(int[] a, int aFromIndex, int aToIndex, int[] b, int bFromIndex, int bToIndex) Compares twointarrays lexicographically over the specified ranges.If the two arrays, over the specified ranges, share a common prefix then the lexicographic comparison is the result of comparing two elements, as if by Integer.compare(int, int), at a relative index within the respective arrays that is the length of the prefix. Otherwise, one array is a proper prefix of the other and, lexicographic comparison is the result of comparing the two range lengths. (Seemismatch(int[], int, int, int[], int, int)for the definition of a common and proper prefix.)The comparison is consistent with equals, more specifically the following holds for arraysaandbwith specified ranges [aFromIndex,aToIndex) and [bFromIndex,bToIndex) respectively:Arrays.equals(a, aFromIndex, aToIndex, b, bFromIndex, bToIndex) == (Arrays.compare(a, aFromIndex, aToIndex, b, bFromIndex, bToIndex) == 0)- API Note:
- This method behaves as if: - int i = Arrays.mismatch(a, aFromIndex, aToIndex, b, bFromIndex, bToIndex); if (i >= 0 && i < Math.min(aToIndex - aFromIndex, bToIndex - bFromIndex)) return Integer.compare(a[aFromIndex + i], b[bFromIndex + i]); return (aToIndex - aFromIndex) - (bToIndex - bFromIndex);
- Parameters:
- a- the first array to compare
- aFromIndex- the index (inclusive) of the first element in the first array to be compared
- aToIndex- the index (exclusive) of the last element in the first array to be compared
- b- the second array to compare
- bFromIndex- the index (inclusive) of the first element in the second array to be compared
- bToIndex- the index (exclusive) of the last element in the second array to be compared
- Returns:
- the value 0if, over the specified ranges, the first and second array are equal and contain the same elements in the same order; a value less than0if, over the specified ranges, the first array is lexicographically less than the second array; and a value greater than0if, over the specified ranges, the first array is lexicographically greater than the second array
- Throws:
- IllegalArgumentException- if- aFromIndex > aToIndexor if- bFromIndex > bToIndex
- ArrayIndexOutOfBoundsException- if- aFromIndex < 0 or aToIndex > a.lengthor if- bFromIndex < 0 or bToIndex > b.length
- NullPointerException- if either array is- null
- Since:
- 9
 
- 
compareUnsignedpublic static int compareUnsigned(int[] a, int[] b) Compares twointarrays lexicographically, numerically treating elements as unsigned.If the two arrays share a common prefix then the lexicographic comparison is the result of comparing two elements, as if by Integer.compareUnsigned(int, int), at an index within the respective arrays that is the prefix length. Otherwise, one array is a proper prefix of the other and, lexicographic comparison is the result of comparing the two array lengths. (Seemismatch(int[], int[])for the definition of a common and proper prefix.)A nullarray reference is considered lexicographically less than a non-nullarray reference. Twonullarray references are considered equal.- API Note:
- This method behaves as if (for non- - nullarray references):- int i = Arrays.mismatch(a, b); if (i >= 0 && i < Math.min(a.length, b.length)) return Integer.compareUnsigned(a[i], b[i]); return a.length - b.length;
- Parameters:
- a- the first array to compare
- b- the second array to compare
- Returns:
- the value 0if the first and second array are equal and contain the same elements in the same order; a value less than0if the first array is lexicographically less than the second array; and a value greater than0if the first array is lexicographically greater than the second array
- Since:
- 9
 
- 
compareUnsignedpublic static int compareUnsigned(int[] a, int aFromIndex, int aToIndex, int[] b, int bFromIndex, int bToIndex) Compares twointarrays lexicographically over the specified ranges, numerically treating elements as unsigned.If the two arrays, over the specified ranges, share a common prefix then the lexicographic comparison is the result of comparing two elements, as if by Integer.compareUnsigned(int, int), at a relative index within the respective arrays that is the length of the prefix. Otherwise, one array is a proper prefix of the other and, lexicographic comparison is the result of comparing the two range lengths. (Seemismatch(int[], int, int, int[], int, int)for the definition of a common and proper prefix.)- API Note:
- This method behaves as if: - int i = Arrays.mismatch(a, aFromIndex, aToIndex, b, bFromIndex, bToIndex); if (i >= 0 && i < Math.min(aToIndex - aFromIndex, bToIndex - bFromIndex)) return Integer.compareUnsigned(a[aFromIndex + i], b[bFromIndex + i]); return (aToIndex - aFromIndex) - (bToIndex - bFromIndex);
- Parameters:
- a- the first array to compare
- aFromIndex- the index (inclusive) of the first element in the first array to be compared
- aToIndex- the index (exclusive) of the last element in the first array to be compared
- b- the second array to compare
- bFromIndex- the index (inclusive) of the first element in the second array to be compared
- bToIndex- the index (exclusive) of the last element in the second array to be compared
- Returns:
- the value 0if, over the specified ranges, the first and second array are equal and contain the same elements in the same order; a value less than0if, over the specified ranges, the first array is lexicographically less than the second array; and a value greater than0if, over the specified ranges, the first array is lexicographically greater than the second array
- Throws:
- IllegalArgumentException- if- aFromIndex > aToIndexor if- bFromIndex > bToIndex
- ArrayIndexOutOfBoundsException- if- aFromIndex < 0 or aToIndex > a.lengthor if- bFromIndex < 0 or bToIndex > b.length
- NullPointerException- if either array is null
- Since:
- 9
 
- 
comparepublic static int compare(long[] a, long[] b) Compares twolongarrays lexicographically.If the two arrays share a common prefix then the lexicographic comparison is the result of comparing two elements, as if by Long.compare(long, long), at an index within the respective arrays that is the prefix length. Otherwise, one array is a proper prefix of the other and, lexicographic comparison is the result of comparing the two array lengths. (Seemismatch(long[], long[])for the definition of a common and proper prefix.)A nullarray reference is considered lexicographically less than a non-nullarray reference. Twonullarray references are considered equal.The comparison is consistent with equals, more specifically the following holds for arraysaandb:Arrays.equals(a, b) == (Arrays.compare(a, b) == 0)- API Note:
- This method behaves as if (for non- - nullarray references):- int i = Arrays.mismatch(a, b); if (i >= 0 && i < Math.min(a.length, b.length)) return Long.compare(a[i], b[i]); return a.length - b.length;
- Parameters:
- a- the first array to compare
- b- the second array to compare
- Returns:
- the value 0if the first and second array are equal and contain the same elements in the same order; a value less than0if the first array is lexicographically less than the second array; and a value greater than0if the first array is lexicographically greater than the second array
- Since:
- 9
 
- 
comparepublic static int compare(long[] a, int aFromIndex, int aToIndex, long[] b, int bFromIndex, int bToIndex) Compares twolongarrays lexicographically over the specified ranges.If the two arrays, over the specified ranges, share a common prefix then the lexicographic comparison is the result of comparing two elements, as if by Long.compare(long, long), at a relative index within the respective arrays that is the length of the prefix. Otherwise, one array is a proper prefix of the other and, lexicographic comparison is the result of comparing the two range lengths. (Seemismatch(long[], int, int, long[], int, int)for the definition of a common and proper prefix.)The comparison is consistent with equals, more specifically the following holds for arraysaandbwith specified ranges [aFromIndex,aToIndex) and [bFromIndex,bToIndex) respectively:Arrays.equals(a, aFromIndex, aToIndex, b, bFromIndex, bToIndex) == (Arrays.compare(a, aFromIndex, aToIndex, b, bFromIndex, bToIndex) == 0)- API Note:
- This method behaves as if: - int i = Arrays.mismatch(a, aFromIndex, aToIndex, b, bFromIndex, bToIndex); if (i >= 0 && i < Math.min(aToIndex - aFromIndex, bToIndex - bFromIndex)) return Long.compare(a[aFromIndex + i], b[bFromIndex + i]); return (aToIndex - aFromIndex) - (bToIndex - bFromIndex);
- Parameters:
- a- the first array to compare
- aFromIndex- the index (inclusive) of the first element in the first array to be compared
- aToIndex- the index (exclusive) of the last element in the first array to be compared
- b- the second array to compare
- bFromIndex- the index (inclusive) of the first element in the second array to be compared
- bToIndex- the index (exclusive) of the last element in the second array to be compared
- Returns:
- the value 0if, over the specified ranges, the first and second array are equal and contain the same elements in the same order; a value less than0if, over the specified ranges, the first array is lexicographically less than the second array; and a value greater than0if, over the specified ranges, the first array is lexicographically greater than the second array
- Throws:
- IllegalArgumentException- if- aFromIndex > aToIndexor if- bFromIndex > bToIndex
- ArrayIndexOutOfBoundsException- if- aFromIndex < 0 or aToIndex > a.lengthor if- bFromIndex < 0 or bToIndex > b.length
- NullPointerException- if either array is- null
- Since:
- 9
 
- 
compareUnsignedpublic static int compareUnsigned(long[] a, long[] b) Compares twolongarrays lexicographically, numerically treating elements as unsigned.If the two arrays share a common prefix then the lexicographic comparison is the result of comparing two elements, as if by Long.compareUnsigned(long, long), at an index within the respective arrays that is the prefix length. Otherwise, one array is a proper prefix of the other and, lexicographic comparison is the result of comparing the two array lengths. (Seemismatch(long[], long[])for the definition of a common and proper prefix.)A nullarray reference is considered lexicographically less than a non-nullarray reference. Twonullarray references are considered equal.- API Note:
- This method behaves as if (for non- - nullarray references):- int i = Arrays.mismatch(a, b); if (i >= 0 && i < Math.min(a.length, b.length)) return Long.compareUnsigned(a[i], b[i]); return a.length - b.length;
- Parameters:
- a- the first array to compare
- b- the second array to compare
- Returns:
- the value 0if the first and second array are equal and contain the same elements in the same order; a value less than0if the first array is lexicographically less than the second array; and a value greater than0if the first array is lexicographically greater than the second array
- Since:
- 9
 
- 
compareUnsignedpublic static int compareUnsigned(long[] a, int aFromIndex, int aToIndex, long[] b, int bFromIndex, int bToIndex) Compares twolongarrays lexicographically over the specified ranges, numerically treating elements as unsigned.If the two arrays, over the specified ranges, share a common prefix then the lexicographic comparison is the result of comparing two elements, as if by Long.compareUnsigned(long, long), at a relative index within the respective arrays that is the length of the prefix. Otherwise, one array is a proper prefix of the other and, lexicographic comparison is the result of comparing the two range lengths. (Seemismatch(long[], int, int, long[], int, int)for the definition of a common and proper prefix.)- API Note:
- This method behaves as if: - int i = Arrays.mismatch(a, aFromIndex, aToIndex, b, bFromIndex, bToIndex); if (i >= 0 && i < Math.min(aToIndex - aFromIndex, bToIndex - bFromIndex)) return Long.compareUnsigned(a[aFromIndex + i], b[bFromIndex + i]); return (aToIndex - aFromIndex) - (bToIndex - bFromIndex);
- Parameters:
- a- the first array to compare
- aFromIndex- the index (inclusive) of the first element in the first array to be compared
- aToIndex- the index (exclusive) of the last element in the first array to be compared
- b- the second array to compare
- bFromIndex- the index (inclusive) of the first element in the second array to be compared
- bToIndex- the index (exclusive) of the last element in the second array to be compared
- Returns:
- the value 0if, over the specified ranges, the first and second array are equal and contain the same elements in the same order; a value less than0if, over the specified ranges, the first array is lexicographically less than the second array; and a value greater than0if, over the specified ranges, the first array is lexicographically greater than the second array
- Throws:
- IllegalArgumentException- if- aFromIndex > aToIndexor if- bFromIndex > bToIndex
- ArrayIndexOutOfBoundsException- if- aFromIndex < 0 or aToIndex > a.lengthor if- bFromIndex < 0 or bToIndex > b.length
- NullPointerException- if either array is null
- Since:
- 9
 
- 
comparepublic static int compare(float[] a, float[] b) Compares twofloatarrays lexicographically.If the two arrays share a common prefix then the lexicographic comparison is the result of comparing two elements, as if by Float.compare(float, float), at an index within the respective arrays that is the prefix length. Otherwise, one array is a proper prefix of the other and, lexicographic comparison is the result of comparing the two array lengths. (Seemismatch(float[], float[])for the definition of a common and proper prefix.)A nullarray reference is considered lexicographically less than a non-nullarray reference. Twonullarray references are considered equal.The comparison is consistent with equals, more specifically the following holds for arraysaandb:Arrays.equals(a, b) == (Arrays.compare(a, b) == 0)- API Note:
- This method behaves as if (for non- - nullarray references):- int i = Arrays.mismatch(a, b); if (i >= 0 && i < Math.min(a.length, b.length)) return Float.compare(a[i], b[i]); return a.length - b.length;
- Parameters:
- a- the first array to compare
- b- the second array to compare
- Returns:
- the value 0if the first and second array are equal and contain the same elements in the same order; a value less than0if the first array is lexicographically less than the second array; and a value greater than0if the first array is lexicographically greater than the second array
- Since:
- 9
 
- 
comparepublic static int compare(float[] a, int aFromIndex, int aToIndex, float[] b, int bFromIndex, int bToIndex) Compares twofloatarrays lexicographically over the specified ranges.If the two arrays, over the specified ranges, share a common prefix then the lexicographic comparison is the result of comparing two elements, as if by Float.compare(float, float), at a relative index within the respective arrays that is the length of the prefix. Otherwise, one array is a proper prefix of the other and, lexicographic comparison is the result of comparing the two range lengths. (Seemismatch(float[], int, int, float[], int, int)for the definition of a common and proper prefix.)The comparison is consistent with equals, more specifically the following holds for arraysaandbwith specified ranges [aFromIndex,aToIndex) and [bFromIndex,bToIndex) respectively:Arrays.equals(a, aFromIndex, aToIndex, b, bFromIndex, bToIndex) == (Arrays.compare(a, aFromIndex, aToIndex, b, bFromIndex, bToIndex) == 0)- API Note:
- This method behaves as if: - int i = Arrays.mismatch(a, aFromIndex, aToIndex, b, bFromIndex, bToIndex); if (i >= 0 && i < Math.min(aToIndex - aFromIndex, bToIndex - bFromIndex)) return Float.compare(a[aFromIndex + i], b[bFromIndex + i]); return (aToIndex - aFromIndex) - (bToIndex - bFromIndex);
- Parameters:
- a- the first array to compare
- aFromIndex- the index (inclusive) of the first element in the first array to be compared
- aToIndex- the index (exclusive) of the last element in the first array to be compared
- b- the second array to compare
- bFromIndex- the index (inclusive) of the first element in the second array to be compared
- bToIndex- the index (exclusive) of the last element in the second array to be compared
- Returns:
- the value 0if, over the specified ranges, the first and second array are equal and contain the same elements in the same order; a value less than0if, over the specified ranges, the first array is lexicographically less than the second array; and a value greater than0if, over the specified ranges, the first array is lexicographically greater than the second array
- Throws:
- IllegalArgumentException- if- aFromIndex > aToIndexor if- bFromIndex > bToIndex
- ArrayIndexOutOfBoundsException- if- aFromIndex < 0 or aToIndex > a.lengthor if- bFromIndex < 0 or bToIndex > b.length
- NullPointerException- if either array is- null
- Since:
- 9
 
- 
comparepublic static int compare(double[] a, double[] b) Compares twodoublearrays lexicographically.If the two arrays share a common prefix then the lexicographic comparison is the result of comparing two elements, as if by Double.compare(double, double), at an index within the respective arrays that is the prefix length. Otherwise, one array is a proper prefix of the other and, lexicographic comparison is the result of comparing the two array lengths. (Seemismatch(double[], double[])for the definition of a common and proper prefix.)A nullarray reference is considered lexicographically less than a non-nullarray reference. Twonullarray references are considered equal.The comparison is consistent with equals, more specifically the following holds for arraysaandb:Arrays.equals(a, b) == (Arrays.compare(a, b) == 0)- API Note:
- This method behaves as if (for non- - nullarray references):- int i = Arrays.mismatch(a, b); if (i >= 0 && i < Math.min(a.length, b.length)) return Double.compare(a[i], b[i]); return a.length - b.length;
- Parameters:
- a- the first array to compare
- b- the second array to compare
- Returns:
- the value 0if the first and second array are equal and contain the same elements in the same order; a value less than0if the first array is lexicographically less than the second array; and a value greater than0if the first array is lexicographically greater than the second array
- Since:
- 9
 
- 
comparepublic static int compare(double[] a, int aFromIndex, int aToIndex, double[] b, int bFromIndex, int bToIndex) Compares twodoublearrays lexicographically over the specified ranges.If the two arrays, over the specified ranges, share a common prefix then the lexicographic comparison is the result of comparing two elements, as if by Double.compare(double, double), at a relative index within the respective arrays that is the length of the prefix. Otherwise, one array is a proper prefix of the other and, lexicographic comparison is the result of comparing the two range lengths. (Seemismatch(double[], int, int, double[], int, int)for the definition of a common and proper prefix.)The comparison is consistent with equals, more specifically the following holds for arraysaandbwith specified ranges [aFromIndex,aToIndex) and [bFromIndex,bToIndex) respectively:Arrays.equals(a, aFromIndex, aToIndex, b, bFromIndex, bToIndex) == (Arrays.compare(a, aFromIndex, aToIndex, b, bFromIndex, bToIndex) == 0)- API Note:
- This method behaves as if: - int i = Arrays.mismatch(a, aFromIndex, aToIndex, b, bFromIndex, bToIndex); if (i >= 0 && i < Math.min(aToIndex - aFromIndex, bToIndex - bFromIndex)) return Double.compare(a[aFromIndex + i], b[bFromIndex + i]); return (aToIndex - aFromIndex) - (bToIndex - bFromIndex);
- Parameters:
- a- the first array to compare
- aFromIndex- the index (inclusive) of the first element in the first array to be compared
- aToIndex- the index (exclusive) of the last element in the first array to be compared
- b- the second array to compare
- bFromIndex- the index (inclusive) of the first element in the second array to be compared
- bToIndex- the index (exclusive) of the last element in the second array to be compared
- Returns:
- the value 0if, over the specified ranges, the first and second array are equal and contain the same elements in the same order; a value less than0if, over the specified ranges, the first array is lexicographically less than the second array; and a value greater than0if, over the specified ranges, the first array is lexicographically greater than the second array
- Throws:
- IllegalArgumentException- if- aFromIndex > aToIndexor if- bFromIndex > bToIndex
- ArrayIndexOutOfBoundsException- if- aFromIndex < 0 or aToIndex > a.lengthor if- bFromIndex < 0 or bToIndex > b.length
- NullPointerException- if either array is- null
- Since:
- 9
 
- 
compareCompares twoObjectarrays, within comparable elements, lexicographically.If the two arrays share a common prefix then the lexicographic comparison is the result of comparing two elements of type Tat an indexiwithin the respective arrays that is the prefix length, as if by:
 Otherwise, one array is a proper prefix of the other and, lexicographic comparison is the result of comparing the two array lengths. (SeeComparator.nullsFirst(Comparator.<T>naturalOrder()). compare(a[i], b[i])mismatch(Object[], Object[])for the definition of a common and proper prefix.)A nullarray reference is considered lexicographically less than a non-nullarray reference. Twonullarray references are considered equal. Anullarray element is considered lexicographically less than a non-nullarray element. Twonullarray elements are considered equal.The comparison is consistent with equals, more specifically the following holds for arraysaandb:Arrays.equals(a, b) == (Arrays.compare(a, b) == 0)- API Note:
- This method behaves as if (for non- - nullarray references and elements):- int i = Arrays.mismatch(a, b); if (i >= 0 && i < Math.min(a.length, b.length)) return a[i].compareTo(b[i]); return a.length - b.length;
- Type Parameters:
- T- the type of comparable array elements
- Parameters:
- a- the first array to compare
- b- the second array to compare
- Returns:
- the value 0if the first and second array are equal and contain the same elements in the same order; a value less than0if the first array is lexicographically less than the second array; and a value greater than0if the first array is lexicographically greater than the second array
- Since:
- 9
 
- 
comparepublic static <T extends Comparable<? super T>> int compare(T[] a, int aFromIndex, int aToIndex, T[] b, int bFromIndex, int bToIndex) Compares twoObjectarrays lexicographically over the specified ranges.If the two arrays, over the specified ranges, share a common prefix then the lexicographic comparison is the result of comparing two elements of type Tat a relative indexiwithin the respective arrays that is the prefix length, as if by:
 Otherwise, one array is a proper prefix of the other and, lexicographic comparison is the result of comparing the two range lengths. (SeeComparator.nullsFirst(Comparator.<T>naturalOrder()). compare(a[aFromIndex + i, b[bFromIndex + i])mismatch(Object[], int, int, Object[], int, int)for the definition of a common and proper prefix.)The comparison is consistent with equals, more specifically the following holds for arraysaandbwith specified ranges [aFromIndex,aToIndex) and [bFromIndex,bToIndex) respectively:Arrays.equals(a, aFromIndex, aToIndex, b, bFromIndex, bToIndex) == (Arrays.compare(a, aFromIndex, aToIndex, b, bFromIndex, bToIndex) == 0)- API Note:
- This method behaves as if (for non- - nullarray elements):- int i = Arrays.mismatch(a, aFromIndex, aToIndex, b, bFromIndex, bToIndex); if (i >= 0 && i < Math.min(aToIndex - aFromIndex, bToIndex - bFromIndex)) return a[aFromIndex + i].compareTo(b[bFromIndex + i]); return (aToIndex - aFromIndex) - (bToIndex - bFromIndex);
- Type Parameters:
- T- the type of comparable array elements
- Parameters:
- a- the first array to compare
- aFromIndex- the index (inclusive) of the first element in the first array to be compared
- aToIndex- the index (exclusive) of the last element in the first array to be compared
- b- the second array to compare
- bFromIndex- the index (inclusive) of the first element in the second array to be compared
- bToIndex- the index (exclusive) of the last element in the second array to be compared
- Returns:
- the value 0if, over the specified ranges, the first and second array are equal and contain the same elements in the same order; a value less than0if, over the specified ranges, the first array is lexicographically less than the second array; and a value greater than0if, over the specified ranges, the first array is lexicographically greater than the second array
- Throws:
- IllegalArgumentException- if- aFromIndex > aToIndexor if- bFromIndex > bToIndex
- ArrayIndexOutOfBoundsException- if- aFromIndex < 0 or aToIndex > a.lengthor if- bFromIndex < 0 or bToIndex > b.length
- NullPointerException- if either array is- null
- Since:
- 9
 
- 
compareCompares twoObjectarrays lexicographically using a specified comparator.If the two arrays share a common prefix then the lexicographic comparison is the result of comparing with the specified comparator two elements at an index within the respective arrays that is the prefix length. Otherwise, one array is a proper prefix of the other and, lexicographic comparison is the result of comparing the two array lengths. (See mismatch(Object[], Object[])for the definition of a common and proper prefix.)A nullarray reference is considered lexicographically less than a non-nullarray reference. Twonullarray references are considered equal.- API Note:
- This method behaves as if (for non- - nullarray references):- int i = Arrays.mismatch(a, b, cmp); if (i >= 0 && i < Math.min(a.length, b.length)) return cmp.compare(a[i], b[i]); return a.length - b.length;
- Type Parameters:
- T- the type of array elements
- Parameters:
- a- the first array to compare
- b- the second array to compare
- cmp- the comparator to compare array elements
- Returns:
- the value 0if the first and second array are equal and contain the same elements in the same order; a value less than0if the first array is lexicographically less than the second array; and a value greater than0if the first array is lexicographically greater than the second array
- Throws:
- NullPointerException- if the comparator is- null
- Since:
- 9
 
- 
comparepublic static <T> int compare(T[] a, int aFromIndex, int aToIndex, T[] b, int bFromIndex, int bToIndex, Comparator<? super T> cmp) Compares twoObjectarrays lexicographically over the specified ranges.If the two arrays, over the specified ranges, share a common prefix then the lexicographic comparison is the result of comparing with the specified comparator two elements at a relative index within the respective arrays that is the prefix length. Otherwise, one array is a proper prefix of the other and, lexicographic comparison is the result of comparing the two range lengths. (See mismatch(Object[], int, int, Object[], int, int)for the definition of a common and proper prefix.)- API Note:
- This method behaves as if (for non- - nullarray elements):- int i = Arrays.mismatch(a, aFromIndex, aToIndex, b, bFromIndex, bToIndex, cmp); if (i >= 0 && i < Math.min(aToIndex - aFromIndex, bToIndex - bFromIndex)) return cmp.compare(a[aFromIndex + i], b[bFromIndex + i]); return (aToIndex - aFromIndex) - (bToIndex - bFromIndex);
- Type Parameters:
- T- the type of array elements
- Parameters:
- a- the first array to compare
- aFromIndex- the index (inclusive) of the first element in the first array to be compared
- aToIndex- the index (exclusive) of the last element in the first array to be compared
- b- the second array to compare
- bFromIndex- the index (inclusive) of the first element in the second array to be compared
- bToIndex- the index (exclusive) of the last element in the second array to be compared
- cmp- the comparator to compare array elements
- Returns:
- the value 0if, over the specified ranges, the first and second array are equal and contain the same elements in the same order; a value less than0if, over the specified ranges, the first array is lexicographically less than the second array; and a value greater than0if, over the specified ranges, the first array is lexicographically greater than the second array
- Throws:
- IllegalArgumentException- if- aFromIndex > aToIndexor if- bFromIndex > bToIndex
- ArrayIndexOutOfBoundsException- if- aFromIndex < 0 or aToIndex > a.lengthor if- bFromIndex < 0 or bToIndex > b.length
- NullPointerException- if either array or the comparator is- null
- Since:
- 9
 
- 
mismatchpublic static int mismatch(boolean[] a, boolean[] b) Finds and returns the index of the first mismatch between twobooleanarrays, otherwise return -1 if no mismatch is found. The index will be in the range of 0 (inclusive) up to the length (inclusive) of the smaller array.If the two arrays share a common prefix then the returned index is the length of the common prefix and it follows that there is a mismatch between the two elements at that index within the respective arrays. If one array is a proper prefix of the other then the returned index is the length of the smaller array and it follows that the index is only valid for the larger array. Otherwise, there is no mismatch. Two non- nullarrays,aandb, share a common prefix of lengthplif the following expression is true:
 Note that a common prefix length ofpl >= 0 && pl < Math.min(a.length, b.length) && Arrays.equals(a, 0, pl, b, 0, pl) && a[pl] != b[pl]0indicates that the first elements from each array mismatch.Two non- nullarrays,aandb, share a proper prefix if the following expression is true:a.length != b.length && Arrays.equals(a, 0, Math.min(a.length, b.length), b, 0, Math.min(a.length, b.length))- Parameters:
- a- the first array to be tested for a mismatch
- b- the second array to be tested for a mismatch
- Returns:
- the index of the first mismatch between the two arrays,
         otherwise -1.
- Throws:
- NullPointerException- if either array is- null
- Since:
- 9
 
- 
mismatchpublic static int mismatch(boolean[] a, int aFromIndex, int aToIndex, boolean[] b, int bFromIndex, int bToIndex) Finds and returns the relative index of the first mismatch between twobooleanarrays over the specified ranges, otherwise return -1 if no mismatch is found. The index will be in the range of 0 (inclusive) up to the length (inclusive) of the smaller range.If the two arrays, over the specified ranges, share a common prefix then the returned relative index is the length of the common prefix and it follows that there is a mismatch between the two elements at that relative index within the respective arrays. If one array is a proper prefix of the other, over the specified ranges, then the returned relative index is the length of the smaller range and it follows that the relative index is only valid for the array with the larger range. Otherwise, there is no mismatch. Two non- nullarrays,aandbwith specified ranges [aFromIndex,aToIndex) and [bFromIndex,bToIndex) respectively, share a common prefix of lengthplif the following expression is true:
 Note that a common prefix length ofpl >= 0 && pl < Math.min(aToIndex - aFromIndex, bToIndex - bFromIndex) && Arrays.equals(a, aFromIndex, aFromIndex + pl, b, bFromIndex, bFromIndex + pl) && a[aFromIndex + pl] != b[bFromIndex + pl]0indicates that the first elements from each array mismatch.Two non- nullarrays,aandbwith specified ranges [aFromIndex,aToIndex) and [bFromIndex,bToIndex) respectively, share a proper prefix if the following expression is true:(aToIndex - aFromIndex) != (bToIndex - bFromIndex) && Arrays.equals(a, 0, Math.min(aToIndex - aFromIndex, bToIndex - bFromIndex), b, 0, Math.min(aToIndex - aFromIndex, bToIndex - bFromIndex))- Parameters:
- a- the first array to be tested for a mismatch
- aFromIndex- the index (inclusive) of the first element in the first array to be tested
- aToIndex- the index (exclusive) of the last element in the first array to be tested
- b- the second array to be tested for a mismatch
- bFromIndex- the index (inclusive) of the first element in the second array to be tested
- bToIndex- the index (exclusive) of the last element in the second array to be tested
- Returns:
- the relative index of the first mismatch between the two arrays
         over the specified ranges, otherwise -1.
- Throws:
- IllegalArgumentException- if- aFromIndex > aToIndexor if- bFromIndex > bToIndex
- ArrayIndexOutOfBoundsException- if- aFromIndex < 0 or aToIndex > a.lengthor if- bFromIndex < 0 or bToIndex > b.length
- NullPointerException- if either array is- null
- Since:
- 9
 
- 
mismatchpublic static int mismatch(byte[] a, byte[] b) Finds and returns the index of the first mismatch between twobytearrays, otherwise return -1 if no mismatch is found. The index will be in the range of 0 (inclusive) up to the length (inclusive) of the smaller array.If the two arrays share a common prefix then the returned index is the length of the common prefix and it follows that there is a mismatch between the two elements at that index within the respective arrays. If one array is a proper prefix of the other then the returned index is the length of the smaller array and it follows that the index is only valid for the larger array. Otherwise, there is no mismatch. Two non- nullarrays,aandb, share a common prefix of lengthplif the following expression is true:
 Note that a common prefix length ofpl >= 0 && pl < Math.min(a.length, b.length) && Arrays.equals(a, 0, pl, b, 0, pl) && a[pl] != b[pl]0indicates that the first elements from each array mismatch.Two non- nullarrays,aandb, share a proper prefix if the following expression is true:a.length != b.length && Arrays.equals(a, 0, Math.min(a.length, b.length), b, 0, Math.min(a.length, b.length))- Parameters:
- a- the first array to be tested for a mismatch
- b- the second array to be tested for a mismatch
- Returns:
- the index of the first mismatch between the two arrays,
         otherwise -1.
- Throws:
- NullPointerException- if either array is- null
- Since:
- 9
 
- 
mismatchpublic static int mismatch(byte[] a, int aFromIndex, int aToIndex, byte[] b, int bFromIndex, int bToIndex) Finds and returns the relative index of the first mismatch between twobytearrays over the specified ranges, otherwise return -1 if no mismatch is found. The index will be in the range of 0 (inclusive) up to the length (inclusive) of the smaller range.If the two arrays, over the specified ranges, share a common prefix then the returned relative index is the length of the common prefix and it follows that there is a mismatch between the two elements at that relative index within the respective arrays. If one array is a proper prefix of the other, over the specified ranges, then the returned relative index is the length of the smaller range and it follows that the relative index is only valid for the array with the larger range. Otherwise, there is no mismatch. Two non- nullarrays,aandbwith specified ranges [aFromIndex,aToIndex) and [bFromIndex,bToIndex) respectively, share a common prefix of lengthplif the following expression is true:
 Note that a common prefix length ofpl >= 0 && pl < Math.min(aToIndex - aFromIndex, bToIndex - bFromIndex) && Arrays.equals(a, aFromIndex, aFromIndex + pl, b, bFromIndex, bFromIndex + pl) && a[aFromIndex + pl] != b[bFromIndex + pl]0indicates that the first elements from each array mismatch.Two non- nullarrays,aandbwith specified ranges [aFromIndex,aToIndex) and [bFromIndex,bToIndex) respectively, share a proper prefix if the following expression is true:(aToIndex - aFromIndex) != (bToIndex - bFromIndex) && Arrays.equals(a, 0, Math.min(aToIndex - aFromIndex, bToIndex - bFromIndex), b, 0, Math.min(aToIndex - aFromIndex, bToIndex - bFromIndex))- Parameters:
- a- the first array to be tested for a mismatch
- aFromIndex- the index (inclusive) of the first element in the first array to be tested
- aToIndex- the index (exclusive) of the last element in the first array to be tested
- b- the second array to be tested for a mismatch
- bFromIndex- the index (inclusive) of the first element in the second array to be tested
- bToIndex- the index (exclusive) of the last element in the second array to be tested
- Returns:
- the relative index of the first mismatch between the two arrays
         over the specified ranges, otherwise -1.
- Throws:
- IllegalArgumentException- if- aFromIndex > aToIndexor if- bFromIndex > bToIndex
- ArrayIndexOutOfBoundsException- if- aFromIndex < 0 or aToIndex > a.lengthor if- bFromIndex < 0 or bToIndex > b.length
- NullPointerException- if either array is- null
- Since:
- 9
 
- 
mismatchpublic static int mismatch(char[] a, char[] b) Finds and returns the index of the first mismatch between twochararrays, otherwise return -1 if no mismatch is found. The index will be in the range of 0 (inclusive) up to the length (inclusive) of the smaller array.If the two arrays share a common prefix then the returned index is the length of the common prefix and it follows that there is a mismatch between the two elements at that index within the respective arrays. If one array is a proper prefix of the other then the returned index is the length of the smaller array and it follows that the index is only valid for the larger array. Otherwise, there is no mismatch. Two non- nullarrays,aandb, share a common prefix of lengthplif the following expression is true:
 Note that a common prefix length ofpl >= 0 && pl < Math.min(a.length, b.length) && Arrays.equals(a, 0, pl, b, 0, pl) && a[pl] != b[pl]0indicates that the first elements from each array mismatch.Two non- nullarrays,aandb, share a proper prefix if the following expression is true:a.length != b.length && Arrays.equals(a, 0, Math.min(a.length, b.length), b, 0, Math.min(a.length, b.length))- Parameters:
- a- the first array to be tested for a mismatch
- b- the second array to be tested for a mismatch
- Returns:
- the index of the first mismatch between the two arrays,
         otherwise -1.
- Throws:
- NullPointerException- if either array is- null
- Since:
- 9
 
- 
mismatchpublic static int mismatch(char[] a, int aFromIndex, int aToIndex, char[] b, int bFromIndex, int bToIndex) Finds and returns the relative index of the first mismatch between twochararrays over the specified ranges, otherwise return -1 if no mismatch is found. The index will be in the range of 0 (inclusive) up to the length (inclusive) of the smaller range.If the two arrays, over the specified ranges, share a common prefix then the returned relative index is the length of the common prefix and it follows that there is a mismatch between the two elements at that relative index within the respective arrays. If one array is a proper prefix of the other, over the specified ranges, then the returned relative index is the length of the smaller range and it follows that the relative index is only valid for the array with the larger range. Otherwise, there is no mismatch. Two non- nullarrays,aandbwith specified ranges [aFromIndex,aToIndex) and [bFromIndex,bToIndex) respectively, share a common prefix of lengthplif the following expression is true:
 Note that a common prefix length ofpl >= 0 && pl < Math.min(aToIndex - aFromIndex, bToIndex - bFromIndex) && Arrays.equals(a, aFromIndex, aFromIndex + pl, b, bFromIndex, bFromIndex + pl) && a[aFromIndex + pl] != b[bFromIndex + pl]0indicates that the first elements from each array mismatch.Two non- nullarrays,aandbwith specified ranges [aFromIndex,aToIndex) and [bFromIndex,bToIndex) respectively, share a proper prefix if the following expression is true:(aToIndex - aFromIndex) != (bToIndex - bFromIndex) && Arrays.equals(a, 0, Math.min(aToIndex - aFromIndex, bToIndex - bFromIndex), b, 0, Math.min(aToIndex - aFromIndex, bToIndex - bFromIndex))- Parameters:
- a- the first array to be tested for a mismatch
- aFromIndex- the index (inclusive) of the first element in the first array to be tested
- aToIndex- the index (exclusive) of the last element in the first array to be tested
- b- the second array to be tested for a mismatch
- bFromIndex- the index (inclusive) of the first element in the second array to be tested
- bToIndex- the index (exclusive) of the last element in the second array to be tested
- Returns:
- the relative index of the first mismatch between the two arrays
         over the specified ranges, otherwise -1.
- Throws:
- IllegalArgumentException- if- aFromIndex > aToIndexor if- bFromIndex > bToIndex
- ArrayIndexOutOfBoundsException- if- aFromIndex < 0 or aToIndex > a.lengthor if- bFromIndex < 0 or bToIndex > b.length
- NullPointerException- if either array is- null
- Since:
- 9
 
- 
mismatchpublic static int mismatch(short[] a, short[] b) Finds and returns the index of the first mismatch between twoshortarrays, otherwise return -1 if no mismatch is found. The index will be in the range of 0 (inclusive) up to the length (inclusive) of the smaller array.If the two arrays share a common prefix then the returned index is the length of the common prefix and it follows that there is a mismatch between the two elements at that index within the respective arrays. If one array is a proper prefix of the other then the returned index is the length of the smaller array and it follows that the index is only valid for the larger array. Otherwise, there is no mismatch. Two non- nullarrays,aandb, share a common prefix of lengthplif the following expression is true:
 Note that a common prefix length ofpl >= 0 && pl < Math.min(a.length, b.length) && Arrays.equals(a, 0, pl, b, 0, pl) && a[pl] != b[pl]0indicates that the first elements from each array mismatch.Two non- nullarrays,aandb, share a proper prefix if the following expression is true:a.length != b.length && Arrays.equals(a, 0, Math.min(a.length, b.length), b, 0, Math.min(a.length, b.length))- Parameters:
- a- the first array to be tested for a mismatch
- b- the second array to be tested for a mismatch
- Returns:
- the index of the first mismatch between the two arrays,
         otherwise -1.
- Throws:
- NullPointerException- if either array is- null
- Since:
- 9
 
- 
mismatchpublic static int mismatch(short[] a, int aFromIndex, int aToIndex, short[] b, int bFromIndex, int bToIndex) Finds and returns the relative index of the first mismatch between twoshortarrays over the specified ranges, otherwise return -1 if no mismatch is found. The index will be in the range of 0 (inclusive) up to the length (inclusive) of the smaller range.If the two arrays, over the specified ranges, share a common prefix then the returned relative index is the length of the common prefix and it follows that there is a mismatch between the two elements at that relative index within the respective arrays. If one array is a proper prefix of the other, over the specified ranges, then the returned relative index is the length of the smaller range and it follows that the relative index is only valid for the array with the larger range. Otherwise, there is no mismatch. Two non- nullarrays,aandbwith specified ranges [aFromIndex,aToIndex) and [bFromIndex,bToIndex) respectively, share a common prefix of lengthplif the following expression is true:
 Note that a common prefix length ofpl >= 0 && pl < Math.min(aToIndex - aFromIndex, bToIndex - bFromIndex) && Arrays.equals(a, aFromIndex, aFromIndex + pl, b, bFromIndex, bFromIndex + pl) && a[aFromIndex + pl] != b[bFromIndex + pl]0indicates that the first elements from each array mismatch.Two non- nullarrays,aandbwith specified ranges [aFromIndex,aToIndex) and [bFromIndex,bToIndex) respectively, share a proper prefix if the following expression is true:(aToIndex - aFromIndex) != (bToIndex - bFromIndex) && Arrays.equals(a, 0, Math.min(aToIndex - aFromIndex, bToIndex - bFromIndex), b, 0, Math.min(aToIndex - aFromIndex, bToIndex - bFromIndex))- Parameters:
- a- the first array to be tested for a mismatch
- aFromIndex- the index (inclusive) of the first element in the first array to be tested
- aToIndex- the index (exclusive) of the last element in the first array to be tested
- b- the second array to be tested for a mismatch
- bFromIndex- the index (inclusive) of the first element in the second array to be tested
- bToIndex- the index (exclusive) of the last element in the second array to be tested
- Returns:
- the relative index of the first mismatch between the two arrays
         over the specified ranges, otherwise -1.
- Throws:
- IllegalArgumentException- if- aFromIndex > aToIndexor if- bFromIndex > bToIndex
- ArrayIndexOutOfBoundsException- if- aFromIndex < 0 or aToIndex > a.lengthor if- bFromIndex < 0 or bToIndex > b.length
- NullPointerException- if either array is- null
- Since:
- 9
 
- 
mismatchpublic static int mismatch(int[] a, int[] b) Finds and returns the index of the first mismatch between twointarrays, otherwise return -1 if no mismatch is found. The index will be in the range of 0 (inclusive) up to the length (inclusive) of the smaller array.If the two arrays share a common prefix then the returned index is the length of the common prefix and it follows that there is a mismatch between the two elements at that index within the respective arrays. If one array is a proper prefix of the other then the returned index is the length of the smaller array and it follows that the index is only valid for the larger array. Otherwise, there is no mismatch. Two non- nullarrays,aandb, share a common prefix of lengthplif the following expression is true:
 Note that a common prefix length ofpl >= 0 && pl < Math.min(a.length, b.length) && Arrays.equals(a, 0, pl, b, 0, pl) && a[pl] != b[pl]0indicates that the first elements from each array mismatch.Two non- nullarrays,aandb, share a proper prefix if the following expression is true:a.length != b.length && Arrays.equals(a, 0, Math.min(a.length, b.length), b, 0, Math.min(a.length, b.length))- Parameters:
- a- the first array to be tested for a mismatch
- b- the second array to be tested for a mismatch
- Returns:
- the index of the first mismatch between the two arrays,
         otherwise -1.
- Throws:
- NullPointerException- if either array is- null
- Since:
- 9
 
- 
mismatchpublic static int mismatch(int[] a, int aFromIndex, int aToIndex, int[] b, int bFromIndex, int bToIndex) Finds and returns the relative index of the first mismatch between twointarrays over the specified ranges, otherwise return -1 if no mismatch is found. The index will be in the range of 0 (inclusive) up to the length (inclusive) of the smaller range.If the two arrays, over the specified ranges, share a common prefix then the returned relative index is the length of the common prefix and it follows that there is a mismatch between the two elements at that relative index within the respective arrays. If one array is a proper prefix of the other, over the specified ranges, then the returned relative index is the length of the smaller range and it follows that the relative index is only valid for the array with the larger range. Otherwise, there is no mismatch. Two non- nullarrays,aandbwith specified ranges [aFromIndex,aToIndex) and [bFromIndex,bToIndex) respectively, share a common prefix of lengthplif the following expression is true:
 Note that a common prefix length ofpl >= 0 && pl < Math.min(aToIndex - aFromIndex, bToIndex - bFromIndex) && Arrays.equals(a, aFromIndex, aFromIndex + pl, b, bFromIndex, bFromIndex + pl) && a[aFromIndex + pl] != b[bFromIndex + pl]0indicates that the first elements from each array mismatch.Two non- nullarrays,aandbwith specified ranges [aFromIndex,aToIndex) and [bFromIndex,bToIndex) respectively, share a proper prefix if the following expression is true:(aToIndex - aFromIndex) != (bToIndex - bFromIndex) && Arrays.equals(a, 0, Math.min(aToIndex - aFromIndex, bToIndex - bFromIndex), b, 0, Math.min(aToIndex - aFromIndex, bToIndex - bFromIndex))- Parameters:
- a- the first array to be tested for a mismatch
- aFromIndex- the index (inclusive) of the first element in the first array to be tested
- aToIndex- the index (exclusive) of the last element in the first array to be tested
- b- the second array to be tested for a mismatch
- bFromIndex- the index (inclusive) of the first element in the second array to be tested
- bToIndex- the index (exclusive) of the last element in the second array to be tested
- Returns:
- the relative index of the first mismatch between the two arrays
         over the specified ranges, otherwise -1.
- Throws:
- IllegalArgumentException- if- aFromIndex > aToIndexor if- bFromIndex > bToIndex
- ArrayIndexOutOfBoundsException- if- aFromIndex < 0 or aToIndex > a.lengthor if- bFromIndex < 0 or bToIndex > b.length
- NullPointerException- if either array is- null
- Since:
- 9
 
- 
mismatchpublic static int mismatch(long[] a, long[] b) Finds and returns the index of the first mismatch between twolongarrays, otherwise return -1 if no mismatch is found. The index will be in the range of 0 (inclusive) up to the length (inclusive) of the smaller array.If the two arrays share a common prefix then the returned index is the length of the common prefix and it follows that there is a mismatch between the two elements at that index within the respective arrays. If one array is a proper prefix of the other then the returned index is the length of the smaller array and it follows that the index is only valid for the larger array. Otherwise, there is no mismatch. Two non- nullarrays,aandb, share a common prefix of lengthplif the following expression is true:
 Note that a common prefix length ofpl >= 0 && pl < Math.min(a.length, b.length) && Arrays.equals(a, 0, pl, b, 0, pl) && a[pl] != b[pl]0indicates that the first elements from each array mismatch.Two non- nullarrays,aandb, share a proper prefix if the following expression is true:a.length != b.length && Arrays.equals(a, 0, Math.min(a.length, b.length), b, 0, Math.min(a.length, b.length))- Parameters:
- a- the first array to be tested for a mismatch
- b- the second array to be tested for a mismatch
- Returns:
- the index of the first mismatch between the two arrays,
         otherwise -1.
- Throws:
- NullPointerException- if either array is- null
- Since:
- 9
 
- 
mismatchpublic static int mismatch(long[] a, int aFromIndex, int aToIndex, long[] b, int bFromIndex, int bToIndex) Finds and returns the relative index of the first mismatch between twolongarrays over the specified ranges, otherwise return -1 if no mismatch is found. The index will be in the range of 0 (inclusive) up to the length (inclusive) of the smaller range.If the two arrays, over the specified ranges, share a common prefix then the returned relative index is the length of the common prefix and it follows that there is a mismatch between the two elements at that relative index within the respective arrays. If one array is a proper prefix of the other, over the specified ranges, then the returned relative index is the length of the smaller range and it follows that the relative index is only valid for the array with the larger range. Otherwise, there is no mismatch. Two non- nullarrays,aandbwith specified ranges [aFromIndex,aToIndex) and [bFromIndex,bToIndex) respectively, share a common prefix of lengthplif the following expression is true:
 Note that a common prefix length ofpl >= 0 && pl < Math.min(aToIndex - aFromIndex, bToIndex - bFromIndex) && Arrays.equals(a, aFromIndex, aFromIndex + pl, b, bFromIndex, bFromIndex + pl) && a[aFromIndex + pl] != b[bFromIndex + pl]0indicates that the first elements from each array mismatch.Two non- nullarrays,aandbwith specified ranges [aFromIndex,aToIndex) and [bFromIndex,bToIndex) respectively, share a proper prefix if the following expression is true:(aToIndex - aFromIndex) != (bToIndex - bFromIndex) && Arrays.equals(a, 0, Math.min(aToIndex - aFromIndex, bToIndex - bFromIndex), b, 0, Math.min(aToIndex - aFromIndex, bToIndex - bFromIndex))- Parameters:
- a- the first array to be tested for a mismatch
- aFromIndex- the index (inclusive) of the first element in the first array to be tested
- aToIndex- the index (exclusive) of the last element in the first array to be tested
- b- the second array to be tested for a mismatch
- bFromIndex- the index (inclusive) of the first element in the second array to be tested
- bToIndex- the index (exclusive) of the last element in the second array to be tested
- Returns:
- the relative index of the first mismatch between the two arrays
         over the specified ranges, otherwise -1.
- Throws:
- IllegalArgumentException- if- aFromIndex > aToIndexor if- bFromIndex > bToIndex
- ArrayIndexOutOfBoundsException- if- aFromIndex < 0 or aToIndex > a.lengthor if- bFromIndex < 0 or bToIndex > b.length
- NullPointerException- if either array is- null
- Since:
- 9
 
- 
mismatchpublic static int mismatch(float[] a, float[] b) Finds and returns the index of the first mismatch between twofloatarrays, otherwise return -1 if no mismatch is found. The index will be in the range of 0 (inclusive) up to the length (inclusive) of the smaller array.If the two arrays share a common prefix then the returned index is the length of the common prefix and it follows that there is a mismatch between the two elements at that index within the respective arrays. If one array is a proper prefix of the other then the returned index is the length of the smaller array and it follows that the index is only valid for the larger array. Otherwise, there is no mismatch. Two non- nullarrays,aandb, share a common prefix of lengthplif the following expression is true:
 Note that a common prefix length ofpl >= 0 && pl < Math.min(a.length, b.length) && Arrays.equals(a, 0, pl, b, 0, pl) && Float.compare(a[pl], b[pl]) != 00indicates that the first elements from each array mismatch.Two non- nullarrays,aandb, share a proper prefix if the following expression is true:a.length != b.length && Arrays.equals(a, 0, Math.min(a.length, b.length), b, 0, Math.min(a.length, b.length))- Parameters:
- a- the first array to be tested for a mismatch
- b- the second array to be tested for a mismatch
- Returns:
- the index of the first mismatch between the two arrays,
         otherwise -1.
- Throws:
- NullPointerException- if either array is- null
- Since:
- 9
 
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mismatchpublic static int mismatch(float[] a, int aFromIndex, int aToIndex, float[] b, int bFromIndex, int bToIndex) Finds and returns the relative index of the first mismatch between twofloatarrays over the specified ranges, otherwise return -1 if no mismatch is found. The index will be in the range of 0 (inclusive) up to the length (inclusive) of the smaller range.If the two arrays, over the specified ranges, share a common prefix then the returned relative index is the length of the common prefix and it follows that there is a mismatch between the two elements at that relative index within the respective arrays. If one array is a proper prefix of the other, over the specified ranges, then the returned relative index is the length of the smaller range and it follows that the relative index is only valid for the array with the larger range. Otherwise, there is no mismatch. Two non- nullarrays,aandbwith specified ranges [aFromIndex,aToIndex) and [bFromIndex,bToIndex) respectively, share a common prefix of lengthplif the following expression is true:
 Note that a common prefix length ofpl >= 0 && pl < Math.min(aToIndex - aFromIndex, bToIndex - bFromIndex) && Arrays.equals(a, aFromIndex, aFromIndex + pl, b, bFromIndex, bFromIndex + pl) && Float.compare(a[aFromIndex + pl], b[bFromIndex + pl]) != 00indicates that the first elements from each array mismatch.Two non- nullarrays,aandbwith specified ranges [aFromIndex,aToIndex) and [bFromIndex,bToIndex) respectively, share a proper prefix if the following expression is true:(aToIndex - aFromIndex) != (bToIndex - bFromIndex) && Arrays.equals(a, 0, Math.min(aToIndex - aFromIndex, bToIndex - bFromIndex), b, 0, Math.min(aToIndex - aFromIndex, bToIndex - bFromIndex))- Parameters:
- a- the first array to be tested for a mismatch
- aFromIndex- the index (inclusive) of the first element in the first array to be tested
- aToIndex- the index (exclusive) of the last element in the first array to be tested
- b- the second array to be tested for a mismatch
- bFromIndex- the index (inclusive) of the first element in the second array to be tested
- bToIndex- the index (exclusive) of the last element in the second array to be tested
- Returns:
- the relative index of the first mismatch between the two arrays
         over the specified ranges, otherwise -1.
- Throws:
- IllegalArgumentException- if- aFromIndex > aToIndexor if- bFromIndex > bToIndex
- ArrayIndexOutOfBoundsException- if- aFromIndex < 0 or aToIndex > a.lengthor if- bFromIndex < 0 or bToIndex > b.length
- NullPointerException- if either array is- null
- Since:
- 9
 
- 
mismatchpublic static int mismatch(double[] a, double[] b) Finds and returns the index of the first mismatch between twodoublearrays, otherwise return -1 if no mismatch is found. The index will be in the range of 0 (inclusive) up to the length (inclusive) of the smaller array.If the two arrays share a common prefix then the returned index is the length of the common prefix and it follows that there is a mismatch between the two elements at that index within the respective arrays. If one array is a proper prefix of the other then the returned index is the length of the smaller array and it follows that the index is only valid for the larger array. Otherwise, there is no mismatch. Two non- nullarrays,aandb, share a common prefix of lengthplif the following expression is true:
 Note that a common prefix length ofpl >= 0 && pl < Math.min(a.length, b.length) && Arrays.equals(a, 0, pl, b, 0, pl) && Double.compare(a[pl], b[pl]) != 00indicates that the first elements from each array mismatch.Two non- nullarrays,aandb, share a proper prefix if the following expression is true:a.length != b.length && Arrays.equals(a, 0, Math.min(a.length, b.length), b, 0, Math.min(a.length, b.length))- Parameters:
- a- the first array to be tested for a mismatch
- b- the second array to be tested for a mismatch
- Returns:
- the index of the first mismatch between the two arrays,
         otherwise -1.
- Throws:
- NullPointerException- if either array is- null
- Since:
- 9
 
- 
mismatchpublic static int mismatch(double[] a, int aFromIndex, int aToIndex, double[] b, int bFromIndex, int bToIndex) Finds and returns the relative index of the first mismatch between twodoublearrays over the specified ranges, otherwise return -1 if no mismatch is found. The index will be in the range of 0 (inclusive) up to the length (inclusive) of the smaller range.If the two arrays, over the specified ranges, share a common prefix then the returned relative index is the length of the common prefix and it follows that there is a mismatch between the two elements at that relative index within the respective arrays. If one array is a proper prefix of the other, over the specified ranges, then the returned relative index is the length of the smaller range and it follows that the relative index is only valid for the array with the larger range. Otherwise, there is no mismatch. Two non- nullarrays,aandbwith specified ranges [aFromIndex,aToIndex) and [bFromIndex,bToIndex) respectively, share a common prefix of lengthplif the following expression is true:
 Note that a common prefix length ofpl >= 0 && pl < Math.min(aToIndex - aFromIndex, bToIndex - bFromIndex) && Arrays.equals(a, aFromIndex, aFromIndex + pl, b, bFromIndex, bFromIndex + pl) && Double.compare(a[aFromIndex + pl], b[bFromIndex + pl]) != 00indicates that the first elements from each array mismatch.Two non- nullarrays,aandbwith specified ranges [aFromIndex,aToIndex) and [bFromIndex,bToIndex) respectively, share a proper prefix if the following expression is true:(aToIndex - aFromIndex) != (bToIndex - bFromIndex) && Arrays.equals(a, 0, Math.min(aToIndex - aFromIndex, bToIndex - bFromIndex), b, 0, Math.min(aToIndex - aFromIndex, bToIndex - bFromIndex))- Parameters:
- a- the first array to be tested for a mismatch
- aFromIndex- the index (inclusive) of the first element in the first array to be tested
- aToIndex- the index (exclusive) of the last element in the first array to be tested
- b- the second array to be tested for a mismatch
- bFromIndex- the index (inclusive) of the first element in the second array to be tested
- bToIndex- the index (exclusive) of the last element in the second array to be tested
- Returns:
- the relative index of the first mismatch between the two arrays
         over the specified ranges, otherwise -1.
- Throws:
- IllegalArgumentException- if- aFromIndex > aToIndexor if- bFromIndex > bToIndex
- ArrayIndexOutOfBoundsException- if- aFromIndex < 0 or aToIndex > a.lengthor if- bFromIndex < 0 or bToIndex > b.length
- NullPointerException- if either array is- null
- Since:
- 9
 
- 
mismatchFinds and returns the index of the first mismatch between twoObjectarrays, otherwise return -1 if no mismatch is found. The index will be in the range of 0 (inclusive) up to the length (inclusive) of the smaller array.If the two arrays share a common prefix then the returned index is the length of the common prefix and it follows that there is a mismatch between the two elements at that index within the respective arrays. If one array is a proper prefix of the other then the returned index is the length of the smaller array and it follows that the index is only valid for the larger array. Otherwise, there is no mismatch. Two non- nullarrays,aandb, share a common prefix of lengthplif the following expression is true:
 Note that a common prefix length ofpl >= 0 && pl < Math.min(a.length, b.length) && Arrays.equals(a, 0, pl, b, 0, pl) && !Objects.equals(a[pl], b[pl])0indicates that the first elements from each array mismatch.Two non- nullarrays,aandb, share a proper prefix if the following expression is true:a.length != b.length && Arrays.equals(a, 0, Math.min(a.length, b.length), b, 0, Math.min(a.length, b.length))- Parameters:
- a- the first array to be tested for a mismatch
- b- the second array to be tested for a mismatch
- Returns:
- the index of the first mismatch between the two arrays,
         otherwise -1.
- Throws:
- NullPointerException- if either array is- null
- Since:
- 9
 
- 
mismatchpublic static int mismatch(Object[] a, int aFromIndex, int aToIndex, Object[] b, int bFromIndex, int bToIndex) Finds and returns the relative index of the first mismatch between twoObjectarrays over the specified ranges, otherwise return -1 if no mismatch is found. The index will be in the range of 0 (inclusive) up to the length (inclusive) of the smaller range.If the two arrays, over the specified ranges, share a common prefix then the returned relative index is the length of the common prefix and it follows that there is a mismatch between the two elements at that relative index within the respective arrays. If one array is a proper prefix of the other, over the specified ranges, then the returned relative index is the length of the smaller range and it follows that the relative index is only valid for the array with the larger range. Otherwise, there is no mismatch. Two non- nullarrays,aandbwith specified ranges [aFromIndex,aToIndex) and [bFromIndex,bToIndex) respectively, share a common prefix of lengthplif the following expression is true:
 Note that a common prefix length ofpl >= 0 && pl < Math.min(aToIndex - aFromIndex, bToIndex - bFromIndex) && Arrays.equals(a, aFromIndex, aFromIndex + pl, b, bFromIndex, bFromIndex + pl) && !Objects.equals(a[aFromIndex + pl], b[bFromIndex + pl])0indicates that the first elements from each array mismatch.Two non- nullarrays,aandbwith specified ranges [aFromIndex,aToIndex) and [bFromIndex,bToIndex) respectively, share a proper prefix if the following expression is true:(aToIndex - aFromIndex) != (bToIndex - bFromIndex) && Arrays.equals(a, 0, Math.min(aToIndex - aFromIndex, bToIndex - bFromIndex), b, 0, Math.min(aToIndex - aFromIndex, bToIndex - bFromIndex))- Parameters:
- a- the first array to be tested for a mismatch
- aFromIndex- the index (inclusive) of the first element in the first array to be tested
- aToIndex- the index (exclusive) of the last element in the first array to be tested
- b- the second array to be tested for a mismatch
- bFromIndex- the index (inclusive) of the first element in the second array to be tested
- bToIndex- the index (exclusive) of the last element in the second array to be tested
- Returns:
- the relative index of the first mismatch between the two arrays
         over the specified ranges, otherwise -1.
- Throws:
- IllegalArgumentException- if- aFromIndex > aToIndexor if- bFromIndex > bToIndex
- ArrayIndexOutOfBoundsException- if- aFromIndex < 0 or aToIndex > a.lengthor if- bFromIndex < 0 or bToIndex > b.length
- NullPointerException- if either array is- null
- Since:
- 9
 
- 
mismatchFinds and returns the index of the first mismatch between twoObjectarrays, otherwise return -1 if no mismatch is found. The index will be in the range of 0 (inclusive) up to the length (inclusive) of the smaller array.The specified comparator is used to determine if two array elements from the each array are not equal. If the two arrays share a common prefix then the returned index is the length of the common prefix and it follows that there is a mismatch between the two elements at that index within the respective arrays. If one array is a proper prefix of the other then the returned index is the length of the smaller array and it follows that the index is only valid for the larger array. Otherwise, there is no mismatch. Two non- nullarrays,aandb, share a common prefix of lengthplif the following expression is true:
 Note that a common prefix length ofpl >= 0 && pl < Math.min(a.length, b.length) && Arrays.equals(a, 0, pl, b, 0, pl, cmp) cmp.compare(a[pl], b[pl]) != 00indicates that the first elements from each array mismatch.Two non- nullarrays,aandb, share a proper prefix if the following expression is true:a.length != b.length && Arrays.equals(a, 0, Math.min(a.length, b.length), b, 0, Math.min(a.length, b.length), cmp)- Type Parameters:
- T- the type of array elements
- Parameters:
- a- the first array to be tested for a mismatch
- b- the second array to be tested for a mismatch
- cmp- the comparator to compare array elements
- Returns:
- the index of the first mismatch between the two arrays,
         otherwise -1.
- Throws:
- NullPointerException- if either array or the comparator is- null
- Since:
- 9
 
- 
mismatchpublic static <T> int mismatch(T[] a, int aFromIndex, int aToIndex, T[] b, int bFromIndex, int bToIndex, Comparator<? super T> cmp) Finds and returns the relative index of the first mismatch between twoObjectarrays over the specified ranges, otherwise return -1 if no mismatch is found. The index will be in the range of 0 (inclusive) up to the length (inclusive) of the smaller range.If the two arrays, over the specified ranges, share a common prefix then the returned relative index is the length of the common prefix and it follows that there is a mismatch between the two elements at that relative index within the respective arrays. If one array is a proper prefix of the other, over the specified ranges, then the returned relative index is the length of the smaller range and it follows that the relative index is only valid for the array with the larger range. Otherwise, there is no mismatch. Two non- nullarrays,aandbwith specified ranges [aFromIndex,aToIndex) and [bFromIndex,bToIndex) respectively, share a common prefix of lengthplif the following expression is true:
 Note that a common prefix length ofpl >= 0 && pl < Math.min(aToIndex - aFromIndex, bToIndex - bFromIndex) && Arrays.equals(a, aFromIndex, aFromIndex + pl, b, bFromIndex, bFromIndex + pl, cmp) && cmp.compare(a[aFromIndex + pl], b[bFromIndex + pl]) != 00indicates that the first elements from each array mismatch.Two non- nullarrays,aandbwith specified ranges [aFromIndex,aToIndex) and [bFromIndex,bToIndex) respectively, share a proper prefix if the following expression is true:(aToIndex - aFromIndex) != (bToIndex - bFromIndex) && Arrays.equals(a, 0, Math.min(aToIndex - aFromIndex, bToIndex - bFromIndex), b, 0, Math.min(aToIndex - aFromIndex, bToIndex - bFromIndex), cmp)- Type Parameters:
- T- the type of array elements
- Parameters:
- a- the first array to be tested for a mismatch
- aFromIndex- the index (inclusive) of the first element in the first array to be tested
- aToIndex- the index (exclusive) of the last element in the first array to be tested
- b- the second array to be tested for a mismatch
- bFromIndex- the index (inclusive) of the first element in the second array to be tested
- bToIndex- the index (exclusive) of the last element in the second array to be tested
- cmp- the comparator to compare array elements
- Returns:
- the relative index of the first mismatch between the two arrays
         over the specified ranges, otherwise -1.
- Throws:
- IllegalArgumentException- if- aFromIndex > aToIndexor if- bFromIndex > bToIndex
- ArrayIndexOutOfBoundsException- if- aFromIndex < 0 or aToIndex > a.lengthor if- bFromIndex < 0 or bToIndex > b.length
- NullPointerException- if either array or the comparator is- null
- Since:
- 9
 
 
-