알고리즘 입문(Java) - String - 1. 문자 찾기

풀이

import java.util.*;
class Main{
    public int solution(String str, char t){
        int answer=0;
        str=str.toUpperCase();
        t=Character.toUpperCase(t);
        for(int i=0; i<str.length(); i++){
            if(str.charAt(i)==t) answer++;
        }
        return answer;
    }

    public static void main(String[] args){
        Main T = new Main();
        Scanner kb = new Scanner(System.in);
        String str=kb.next();
        char c=kb.next().charAt(0);
        System.out.print(T.solution(str, c));
    }
}