package com.loveCoding.homework.j20250517; /** * @author WanJl * @version 1.0 * @title T9 * @description **9. 数字频率统计** * 要求:统计数组中每个数字出现的次数(假设数字范围0-9) * 示例输入:`{2,5,3,2,8,2}` * 示例输出: * `2出现3次` * `3出现1次` * `5出现1次` * `8出现1次` * @create 2025/5/24 */ public class T9 { public static void main(String[] args) { int[] arr = {2, 5, 3, 2, 8, 2, 2}; for (int i = 0; i < arr.length; i++) { int count = 0; for (int j = i; j < arr.length; j++) { if (arr[i] == arr[j]) { count++; } } System.out.println(arr[i] + "出现" + count + "次"); } } }