백준 1157 단어 공부_JAVA

https://www.acmicpc.net/problem/1157

1157번: 단어 공부

 

 

 

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {

        Scanner sc = new Scanner(System.in);

        int arr[] = new int[26];


        String s = sc.next();
        for (int i = 0 ; i < s.length() ; i++){
			//대문자와 소문자 계산
            if (s.charAt(i) > 64 && s.charAt(i) < 97){
                arr[s.charAt(i)-65] ++;

            }else{
                arr[s.charAt(i)-97] ++;

            }

        }


        int max = 0 ;
        char ch = '?';

        for (int i = 0 ; i  max){
                max = arr[i];
                ch = (char) (i + 65); //대문자
            }else if(max == arr[i]){
                ch = '?';
            }

        }

        System.out.println(ch);

        sc.close();


    }

}