[SWEA] 반반

 

 

[문제]

https://swexpertacademy.com/main/code/problem/problemDetail.do?contestProbId=AXjS1GXqZ8gDFATi

SW Expert Academy

 

 

 

[소스 코드]

import java.io.*;
import java.util.*;
public class Solution {
	public static void main(String[] args) throws IOException {
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		int T = Integer.parseInt(br.readLine());
		for(int tc=1;tc<=T;tc++) {
			String word = br.readLine();
			int[] cnt = new int[26];
			for(int i=0;i<word.length();i++) {
				cnt[word.charAt(i)-'A']++;
			}
			String result = "Yes";
			for(int i=0;i<26;i++) {
				if(cnt[i]!=2 && cnt[i]!=0) result = "No";
			}
			System.out.println("#"+tc+" "+result);
		}
	}
}