Java example - collection shuffled

The following example demonstrates how to use the Collections class Collections.shuffle() method to shuffle the order of collection elements:

/*
 author by w3cschool.cc
 Main.java
 */import java.util.*;public class Main {
    public static void main(String[] args) {
        List<Integer> list = new ArrayList<Integer>();
        for (int i = 0; i < 10; i++)
            list.add(new Integer(i));
        System.out.println("打乱前:");
        System.out.println(list);

        for (int i = 1; i < 6; i++) {
            System.out.println("第" + i + "次打乱：");
            Collections.shuffle(list);
            System.out.println(list);
        }
    }}

The output result of the above code is:

打乱前:
[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
第1次打乱：
[2, 0, 5, 1, 4, 9, 7, 6, 3, 8]
第2次打乱：
[2, 6, 4, 8, 5, 7, 9, 1, 0, 3]
第3次打乱：
[6, 5, 1, 0, 3, 7, 2, 4, 9, 8]
第4次打乱：
[1, 3, 8, 4, 7, 2, 0, 6, 5, 9]
第5次打乱：
[3, 0, 7, 9, 5, 8, 4, 2, 1, 6]

The above is a Java example - a collection of contents in shuffled order. For more related content, please pay attention to the PHP Chinese website (www.php.cn)!