输入学号随机排序

import java.util.Random;
import java.util.Scanner;
public class test {
    public static void main(String[] args) {
        //随机排名回答问题
        int[] num = new int[5];//用数组装入
        Scanner sc = new Scanner(System.in);
        //输入学号
        for (int i = 0; i < num.length; i++) {
            System.out.println("请输入第"+(i+1)+"个学生学号");
            int numin = sc.nextInt();
            num[i] = numin;
        }
        //随机交换
        Random r = new Random();
        for (int i = 0; i < num.length; i++) {
            int index = r.nextInt(num.length);
            int temp;
            temp = num[i];
            num[i]= num[index];
            num[index]=temp;
        }
        //输出结果
        System.out.println("随机结果为：");
        for (int i = 0; i < num.length; i++) {
            System.out.println(num[i]);
        }
    }
}