VIPJAVA/git-demo/com/sf/TestWang.java

package com.sf;

import java.util.Arrays;
import java.util.Collections;
import java.util.Random;
import java.util.Scanner;


public class TestWang {

    public static void main(String[] args) {
        Scanner random = new Scanner(System.in);
        int number_of_students = random.nextInt(10);
        String[] student_names = {"小明", "小红", "小刚", "小李", "小张", "小哈", "小小", "小困", "小顾"};
        // 如何把数组转化成list
        Collections.shuffle(Arrays.asList(student_names));
        // shuffle 洗牌
        // {1,2,3,4,5}
        // {3,5,1,4,2}
        // 取两个
        // {3,5}
        for (int i = 0; i < number_of_students; i++) {
            System.out.println(student_names[i]);
        }
    }
}