15주차. ROT13

11655. ROT13

https://www.acmicpc.net/problem/11655

11655번: ROT13

📌문제

 

📌풀이

아스키 코드만 잘 굴리면 쉽게 풀 수 있음

124ms 14240kb

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class Main {
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        StringBuilder sb = new StringBuilder();
        for(char c : br.readLine().toCharArray()){
            int n = Character.isLowerCase(c) ? 'z' : 'Z';
            if(Character.isLetter(c) && ((c += 13) > n)) c -= 26;
            sb.append(c);
        }
        System.out.println(sb);
    }
}