package com.mohuanan.exercise;import java.util.Random;//打乱数组的元素
public class ExerciseDemo05 {public static void main(String[] args) {int[] arr = {1,2,3,4,5};Random r = new Random();for (int i = 0; i < arr.length; i++) {int randomIndex = r.nextInt(5);int temp;//临时变量temp = arr[randomIndex];arr[randomIndex] = arr[i];arr[i] = temp;}//遍历数组,并输出for (int i = 0; i < arr.length; i++) {System.out.print(arr[i]+"");}}
}

输出的结果: