题解 | #计算某字母出现次数#

import java.util.Scanner;
public class Main {

    public static void main(String[] args)
    {
        Scanner sc = new Scanner(System.in);
        String str = sc.nextLine().toUpperCase();
        char s = sc.next().charAt(0);
        if(s>='a'&&s<='z')
        {
            s=(char)(s-'a'+'A');
        }
        int j=0;
        for(int i=0 ; i<str.length();i++)
        {
            if(s==str.charAt(i))
            {
                j++;
            }

        }
        System.out.println(j);
    }
}