백준 1157 Java

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

1157번: 단어 공부

 

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import java.util.Scanner;
 
public class Main {
 
	public static void main(String[] args) {
			
		Scanner sc = new Scanner(System.in);
		String str=sc.next();
		
		sc.close();
		str=str.toUpperCase();
		
		int[] res=new int[26];
		
		for(int i=0;i<str.length();i++) {
			res[str.charAt(i)-65]++;
		}
		

		int Max=res[0];
		int Maxres=0;
		
		
		for(int i=1;i<26;i++) {
			if(Max<res[i]) {
				Max=res[i];
				Maxres=i;
			}
			else if(Max==res[i]) {
				Maxres=-2;
			}
		}
		System.out.println(Character.toString(Maxres+'A'));
	
		
	}


}