[1157]문자열 - 단어 공부

문제

 

코드

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class Main {
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

        String input = br.readLine();
        int cnt[] = new int[26];

        for (byte inputs : input.getBytes()) {
            if (inputs >= 97) {
                cnt[inputs - 'a']++;
            } else {
                cnt[inputs - 'A']++;
            }
        }

        char res = 0;
        int max = -1;
        for (int i = 0; i < 26; i++) {
            if (max < cnt[i]) {
                max = cnt[i];
                res = (char) ('A' + i);
            } else if (max == cnt[i]) {
                res = '?';
            }
        }

        System.out.println(res);
    }
}