Java Array Shuffle shuffle(short... a)

Description

Shuffles the given array randomizing the elements.

License

Open Source License

Parameter

Parameter	Description
a	the array to shuffle

Return

the shuffled array

Declaration

public static short[] shuffle(short... a) 

Method Source Code

//package com.java2s;

import java.util.Random;

public class Main {
    private static final Random RAND = new Random();

    /**//from   w w  w . j  a v  a  2s .  c  o m
     * Shuffles the given array randomizing the elements. The argument and return
     * values are the same for reference.
     *
     * @param a the array to shuffle
     * @return the shuffled array
     */
    public static int[] shuffle(int... a) {
        for (int i = 0; i < a.length; i++) {
            int p = RAND.nextInt(a.length);
            int tmp = a[i];
            a[i] = a[p];
            a[p] = tmp;
        }
        return a;
    }

    /**
     * Shuffles the given array randomizing the elements. The argument and return
     * values are the same for reference.
     *
     * @param a the array to shuffle
     * @return the shuffled array
     */
    public static short[] shuffle(short... a) {
        for (int i = 0; i < a.length; i++) {
            int p = RAND.nextInt(a.length);
            short tmp = a[i];
            a[i] = a[p];
            a[p] = tmp;
        }
        return a;
    }

    /**
     * Shuffles the given array randomizing the elements. The argument and return
     * values are the same for reference.
     *
     * @param a the array to shuffle
     * @return the shuffled array
     */
    public static long[] shuffle(long... a) {
        for (int i = 0; i < a.length; i++) {
            int p = RAND.nextInt(a.length);
            long tmp = a[i];
            a[i] = a[p];
            a[p] = tmp;
        }
        return a;
    }

    /**
     * Shuffles the given array randomizing the elements. The argument and return
     * values are the same for reference.
     *
     * @param a the array to shuffle
     * @return the shuffled array
     */
    public static float[] shuffle(float... a) {
        for (int i = 0; i < a.length; i++) {
            int p = RAND.nextInt(a.length);
            float tmp = a[i];
            a[i] = a[p];
            a[p] = tmp;
        }
        return a;
    }

    /**
     * Shuffles the given array randomizing the elements. The argument and return
     * values are the same for reference.
     *
     * @param a the array to shuffle
     * @return the shuffled array
     */
    public static double[] shuffle(double... a) {
        for (int i = 0; i < a.length; i++) {
            int p = RAND.nextInt(a.length);
            double tmp = a[i];
            a[i] = a[p];
            a[p] = tmp;
        }
        return a;
    }

    /**
     * Shuffles the given array randomizing the elements. The argument and return
     * values are the same for reference.
     *
     * @param a the array to shuffle
     * @return the shuffled array
     */
    public static char[] shuffle(char... a) {
        for (int i = 0; i < a.length; i++) {
            int p = RAND.nextInt(a.length);
            char tmp = a[i];
            a[i] = a[p];
            a[p] = tmp;
        }
        return a;
    }

    /**
     * Shuffles the given array randomizing the elements. The argument and return
     * values are the same for reference.
     *
     * @param a the array to shuffle
     * @return the shuffled array
     */
    public static <T> T[] shuffle(final T... a) {
        for (int i = 0; i < a.length; i++) {
            int p = RAND.nextInt(a.length);
            T tmp = a[i];
            a[i] = a[p];
            a[p] = tmp;
        }
        return a;
    }
}

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3. shuffle(Object[] array)
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8. shuffle(T[] array)
9. shuffle(T[] array)