题解 | #计算某字符出现次数#

import java.util.Scanner;

public class Main {


    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String s = sc.nextLine();
        String s1 = sc.nextLine();
        System.out.println(count(s, s1.charAt(0)));
    }


    /**
     * 计算字符出现次数
     */
    public static int count(String str,char c){
        int count = 0;
        c = Character.toUpperCase(c);
        for(int i = 0; i<str.length(); i++){
            char c1 = Character.toUpperCase(str.charAt(i));
            if(c-c1==0){
                count++;
            }
        }
        return count;
    }
}