[백준] - #1157: 단어 공부

문제 출처 : https://www.acmicpc.net/

 

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#1157: 단어 공부 (언어 : Java11)

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제출 답안

import java.util.*;
public class Main{
    public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		String s = sc.next().toUpperCase();
		int[] arr = new int[26];
		
		for(int i=0; i<s.length(); i++) {
			arr[s.charAt(i)-65]++;
		}
		
		int max = -1;
		char answer = '?';
		for(int i=0; i<arr.length; i++) {
			if(arr[i]>max) {
				answer = (char)(i+65);
				max = arr[i];
			}
			else if(max==arr[i]) {
				answer = '?';
			}
		}
		System.out.println(answer);
	}
}

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