Android ArrayList Random permute(Random random, ArrayList array)

Description

permute

Declaration

public static void permute(Random random, ArrayList array) 

Method Source Code

//package com.java2s;
import java.util.ArrayList;
import java.util.Random;

public class Main {
    public static void permute(Random random, ArrayList array) {
        for (int i = 0; i < array.size(); i++) {
            int j = i + random.nextInt(array.size() - i);
            Object tmp = array.get(i);
            array.set(i, array.get(j));//from   w w  w.  jav  a  2  s.co m
            array.set(j, tmp);
        }
    }
}

Related

1. get_a_random_testData(ArrayList mTestData)