[백준 9933] 민균이의 비밀번호

문제

https://www.acmicpc.net/problem/9933

9933번: 민균이의 비밀번호

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내가 작성한 코드

import java.io.*;
import java.util.ArrayList;

public class qor9933 {
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));

        int num = Integer.parseInt(br.readLine());
        ArrayList<String> password = new ArrayList<>();
        String[] reverse = new String[num];

        for(int i = 0; i<num; i++){
            String input = br.readLine();
            password.add(input);
            String result = "";
            for(int j = 0; j<input.length(); j++){
                result += input.charAt(input.length()-j-1);
            }

            reverse[i] = result;
        }

        String answer = "";
        for(int i = 0; i<num; i++){
            if(password.contains(reverse[i])){
                answer = reverse[i];
                break;
            }
        }

        bw.write(answer.length()+" "+answer.charAt((answer.length()-1)/2));
        bw.close();
    }
}