1157번) 단어 공부

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

import java.util.Scanner; public class Q1157 { public static void main(String[] args) { Scanner sc = new Scanner(System.in); String string = sc.nextLine().toUpperCase(); int max = 0; int[] alphabet = new int[26]; for ( int i = 0; i < string.length(); i++ ) { int temp = Integer.valueOf(string.charAt(i)) - 65; if ( 0 <= temp && temp <= 26 ) { if ( alphabet[max] < ++alphabet[temp] ) { max = temp; } } } for ( int i = 0; i < 26; i++ ) { if ( alphabet[i] == alphabet[max] && i != max) { System.out.println("?"); return; } } System.out.println((char)(max+65)); } }