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)!
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