统计数字次数

Problem Description

命令行输入一个由数字组成的任意字符串,统计出每个数字出现的次数。

Input Description

1239586838

Output Description

0 counts:0

1 counts:1

2 counts:1

3 counts:2

4 counts:0

5 counts:1

6 counts:1

7 counts:0

8 counts:3

9 counts:1

解题代码

import java.util.Scanner;

public class Main{

public static void main(String[] args) {

// 创建Scanner对象 接收控制台输入

Scanner in = new Scanner(System.in);

// 接收输入的一行

String line = in.nextLine();

// 切分为字符串数组

String[] nums = line.split("");

// 创建数字数组 用于存放数字出现次数

int cunts[] = new int[10];

// 遍历字符串数组

for (int i = 0; i < nums.length;i++){

// switch语句统计数字出现次数

switch (nums[i]){

case "0": cunts[0]++;

break;

case "1": cunts[1]++;

break;

case "2": cunts[2]++;

break;

case "3": cunts[3]++;

break;

case "4": cunts[4]++;

break;

case "5": cunts[5]++;

break;

case "6": cunts[6]++;

break;

case "7": cunts[7]++;

break;

case "8": cunts[8]++;

break;

case "9": cunts[9]++;

break;

}

}

// 遍历数组 打印结果

for (int i = 0;i < cunts.length;i++) System.out.println(i + " counts:" + cunts[i]);

// 关闭Scanner 输入流

in.close();

}

}

标签：case,Java,OJ,++,Scanner,break,cunts,counts,统计数字

来源： https://blog.csdn.net/qq_40856560/article/details/112602176