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0347 Arrays

This class contains methods for manipulating arrays. Convert array to List tatic<T> List<T> asList(T... a) Returns a fixed-size list backed by the specified array. Binary search an Array 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 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 hash code,to string, equals static boolean deepEquals(Object[] a1, Object[] a2) Returns true if the two specified arrays are deeply equal to one another. static int deepHashCode(Object[] a) Returns a hash code based on the "deep contents" of the specified array. static String deepToString(Object[] a) Returns a string representation of the "deep contents" of the specified array. Compare two arrays 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 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 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 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 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. Revised from Open JDK source code