Java中如何将ArrayList乱序呢?

实现思路:
    使用Collections.shuffle即可将一个ArrayList变为随机顺序

package com.java265.utils;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
public class TestClass {
    public static void main(String[] args) {
        List<String> list = Arrays.asList("A", "B", "C", "D", "1", "2", "3");
 
        //打印ArrayList
        System.out.println(list); 

        // 随机乱序
        Collections.shuffle(list);
        System.out.println(list);
        System.out.println(list);
 
        // 乱序
        Collections.shuffle(list);
        System.out.println(list);
    }
}