This class contains methods for manipulating arrays.
Convert array to List
| Return | Method | Summary |
|---|---|---|
| static<T> List<T> | asList(T... a) | Returns a fixed-size list backed by the specified array. |
Binary search an Array
| Return | Method | Summary |
|---|---|---|
| static int | binarySearch(byte[] a, byte key) | Searches the specified array of bytes for the specified value using the binary search algorithm. |
| 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. |
| static int | binarySearch(char[] a, char key) | Searches the specified array of chars for the specified value using the binary search algorithm. |
| 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. |
| static int | binarySearch(double[] a, double key) | Searches the specified array of doubles for the specified value using the binary search algorithm. |
| 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. |
| static int | binarySearch(float[] a, float key) | Searches the specified array of floats for the specified value using the binary search algorithm. |
| 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. |
| static int | binarySearch(int[] a, int key) | Searches the specified array of ints for the specified value using the binary search algorithm. |
| 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. |
| 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. |
| static int | binarySearch(long[] a, long key) | Searches the specified array of longs for the specified value using the binary search algorithm. |
| static int | binarySearch(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 int | binarySearch(Object[] a, Object key) | Searches the specified array for the specified object using the binary search algorithm. |
| 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. |
| static int | binarySearch(short[] a, short key) | Searches the specified array of shorts for the specified value using the binary search algorithm. |
| 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. |
| static<T> int | binarySearch(T[] a, T key, Comparator<? super T> c) | Searches the specified array for the specified object using the binary search algorithm. |
Copy value to an Array
| Return | Method | Summary |
|---|---|---|
| static boolean[] | copyOf(boolean[] original, int newLength) | Copies the specified array, truncating or padding with false (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[] | copyOf(U[] original, int newLength, Class<? extends T[]> newType) | 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. |
Deep equals
| Return | Method | Summary |
|---|---|---|
| static boolean | deepEquals(Object[] a1, Object[] a2) | Returns true if the two specified arrays are deeply equal to one another. |
Deep hash code
| Return | Method | Summary |
|---|---|---|
| static int | deepHashCode(Object[] a) | Returns a hash code based on the "deep contents" of the specified array. |
Deep to string
| Return | Method | Summary |
|---|---|---|
| static String | deepToString(Object[] a) | Returns a string representation of the "deep contents" of the specified array. |
Compare two arrays
| Return | Method | Summary |
|---|---|---|
| static boolean | equals(boolean[] a, boolean[] a2) | Returns true if the two specified arrays of booleans are equal to one another. |
| static boolean | equals(byte[] a, byte[] a2) | Returns true if the two specified arrays of bytes are equal to one another. |
| static boolean | equals(char[] a, char[] a2) | Returns true if the two specified arrays of chars are equal to one another. |
| static boolean | equals(double[] a, double[] a2) | Returns true if the two specified arrays of doubles are equal to one another. |
| static boolean | equals(float[] a, float[] a2) | Returns true if the two specified arrays of floats are equal to one another. |
| static boolean | equals(int[] a, int[] a2) | Returns true if the two specified arrays of ints are equal to one another. |
| static boolean | equals(long[] a, long[] a2) | Returns true if the two specified arrays of longs are equal to one another. |
| static boolean | equals(Object[] a, Object[] a2) | Returns true if the two specified arrays of Objects are equal to one another. |
| static boolean | equals(short[] a, short[] a2) | Returns true if the two specified arrays of shorts are equal to one another. |
Fill value to array
| Return | Method | Summary |
|---|---|---|
| static void | fill(boolean[] a, boolean val) | Assigns the specified boolean value to each element of the specified array of booleans. |
| 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. |
| static void | fill(byte[] a, byte val) | Assigns the specified byte value to each element of the specified array of bytes. |
| 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. |
| static void | fill(char[] a, char val) | Assigns the specified char value to each element of the specified array of chars. |
| 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. |
| static void | fill(double[] a, double val) | Assigns the specified double value to each element of the specified array of doubles. |
| 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. |
| static void | fill(float[] a, float val) | Assigns the specified float value to each element of the specified array of floats. |
| 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. |
| static void | fill(int[] a, int val) | Assigns the specified int value to each element of the specified array of ints. |
| 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. |
| 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. |
| static void | fill(long[] a, long val) | Assigns the specified long value to each element of the specified array of longs. |
| static void | fill(Object[] a, int fromIndex, int toIndex, Object val) | Assigns the specified Object reference to each element of the specified range of the specified array of Objects. |
| static void | fill(Object[] a, Object val) | Assigns the specified Object reference to each element of the specified array of Objects. |
| 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. |
| static void | fill(short[] a, short val) | Assigns the specified short value to each element of the specified array of shorts. |
Get the hash code for array
| Return | Method | Summary |
|---|---|---|
| static int | hashCode(boolean[] a) | Returns a hash code based on the contents of the specified array. |
| static int | hashCode(byte[] a) | Returns a hash code based on the contents of the specified array. |
| static int | hashCode(char[] a) | Returns a hash code based on the contents of the specified array. |
| static int | hashCode(double[] a) | Returns a hash code based on the contents of the specified array. |
| static int | hashCode(float[] a) | Returns a hash code based on the contents of the specified array. |
| static int | hashCode(int[] a) | Returns a hash code based on the contents of the specified array. |
| static int | hashCode(long[] a) | Returns a hash code based on the contents of the specified array. |
| static int | hashCode(Object[] a) | Returns a hash code based on the contents of the specified array. |
| static int | hashCode(short[] a) | Returns a hash code based on the contents of the specified array. |
Sort an array
| Return | Method | Summary |
|---|---|---|
| static void | sort(byte[] a) | Sorts the specified array of bytes into ascending numerical order. |
| static void | sort(byte[] a, int fromIndex, int toIndex) | Sorts the specified range of the specified array of bytes into ascending numerical order. |
| static void | sort(char[] a) | Sorts the specified array of chars into ascending numerical order. |
| static void | sort(char[] a, int fromIndex, int toIndex) | Sorts the specified range of the specified array of chars into ascending numerical order. |
| static void | sort(double[] a) | Sorts the specified array of doubles into ascending numerical order. |
| static void | sort(double[] a, int fromIndex, int toIndex) | Sorts the specified range of the specified array of doubles into ascending numerical order. |
| static void | sort(float[] a) | Sorts the specified array of floats into ascending numerical order. |
| static void | sort(float[] a, int fromIndex, int toIndex) | Sorts the specified range of the specified array of floats into ascending numerical order. |
| static void | sort(int[] a) | Sorts the specified array of ints into ascending numerical order. |
| static void | sort(int[] a, int fromIndex, int toIndex) | Sorts the specified range of the specified array of ints into ascending numerical order. |
| static void | sort(long[] a) | Sorts the specified array of longs into ascending numerical order. |
| static void | sort(long[] a, int fromIndex, int toIndex) | Sorts the specified range of the specified array of longs into ascending numerical order. |
| static void | sort(Object[] a) | Sorts the specified array of objects into ascending order, according to the natural ordering of its elements. |
| static void | sort(Object[] 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 void | sort(short[] a) | Sorts the specified array of shorts into ascending numerical order. |
| static void | sort(short[] a, int fromIndex, int toIndex) | Sorts the specified range of the specified array of shorts into ascending numerical order. |
| static<T> void | sort(T[] a, Comparator<? super T> c) | Sorts the specified array of objects according to the order induced by the specified comparator. |
| static<T> void | sort(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. |
Convert array to string
| Return | Method | Summary |
|---|---|---|
| static String | toString(boolean[] a) | Returns a string representation of the contents of the specified array. |
| static String | toString(byte[] a) | Returns a string representation of the contents of the specified array. |
| static String | toString(char[] a) | Returns a string representation of the contents of the specified array. |
| static String | toString(double[] a) | Returns a string representation of the contents of the specified array. |
| static String | toString(float[] a) | Returns a string representation of the contents of the specified array. |
| static String | toString(int[] a) | Returns a string representation of the contents of the specified array. |
| static String | toString(long[] a) | Returns a string representation of the contents of the specified array. |
| static String | toString(Object[] a) | Returns a string representation of the contents of the specified array. |
| static String | toString(short[] a) | Returns a string representation of the contents of the specified array. |
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