题解 | #计算某字符出现次数#

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.*;
public class Main {
    public static void main(String[] args) throws IOException {
        int count = 0;
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        String str1= br.readLine();
        String str2= br.readLine();
        String[] arr1 = str1.toUpperCase().split("");
        String[] arr2 = str2.toUpperCase().split("");
        for (int i = 0; i < str1.length(); i++) {
            for (int j = 0; j < str2.length(); j++) {
              //  System.out.println("arr1[" + i + "]" + arr1[i] + "\n" + "arr2[" + j + "]" + arr2[j]);
                if(arr1[i].equals(arr2[j])) {
                    count++;

                }
            }

        }
        //System.out.println("字母" + str2 + "出现的次数是：" + count);
        System.out.println(count);
    }
   
}
#华为OD##华为机考#