統計數字次數

Problem Description

命令行輸入一個由數字組成的任意字符串,統計出每個數字出現的次數。

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

解題代碼

import java.util.Scanner;

public class Main{

public static void main(String[] args) {

// 創建Scanner對象 接收控制臺輸入

Scanner in = new Scanner(System.in);

// 接收輸入的一行

String line = in.nextLine();

// 切分為字符串數組

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

// 創建數字數組 用于存放數字出現次數

int cunts[] = new int[10];

// 遍歷字符串數組

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

// switch語句統計數字出現次數

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;

}

}

// 遍歷數組 打印結果

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

// 關閉Scanner 輸入流

in.close();

}

}

標簽：case,Java,OJ,++,Scanner,break,cunts,counts,統計數字

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