题解 | #计算某字符出现次数#

import java.util.*;

public class Main{
    public static void main(String args[]){
        Scanner sc = new Scanner(System.in);
        while(sc.hasNext()){
            String str = sc.nextLine().toLowerCase();
            String s = sc.nextLine().toLowerCase();
            String str2 = str.replace(s,"");
            System.out.println(str.length()-str2.length());
        }
    }
}