1) 문자 개수 찾기 with JAVA

Q. 특정 문자 개수 찾기

 

import java.util.Scanner;

public class findChar {
    public int solution(String str, char t) {
        int answer = 0;
        str = str.toUpperCase();
        t = Character.toUpperCase(t);
        for(char x : str.toCharArray()) {
            if(x == t) answer++;
        }

        return answer;
    }

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

}