题解 | #计算某字符出现次数#

import java.util.*;
public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        String a = in.nextLine();
        String b = in.nextLine();
        int sum = 0;
        for(int i = 0; i < a.length(); i++) {
		// # (a.charAt(i) + "")  让字符变成字符串去进行比较
            if((a.charAt(i) + "").equalsIgnoreCase(b+"")){
                sum++;
            }
        }
        System.out.println(sum);
       
    }
}