[프로그래머스] [LV1] 시저 암호

📚 시저 암호

링크📎 : https://programmers.co.kr/learn/courses/30/lessons/12926

난이도 ⭐️

📖 문제

📝 내 풀이

import java.util.*;

class Solution {
    public String solution(String s, int n) {
        String answer = "";
        
        for(int i = 0; i < s.length(); i++){
            if(Character.isUpperCase(s.charAt(i))){
                if(s.charAt(i) + n > 'Z') answer += (char)(s.charAt(i) + n - 1 - 'Z' + 'A');
                else answer += (char)(s.charAt(i) + n);
            }
            else if(Character.isLowerCase(s.charAt(i))){
                if(s.charAt(i) + n > 'z') answer += (char)(s.charAt(i) + n - 1 - 'z' + 'a');
                else answer += (char)(s.charAt(i) + n);
            }
            else answer += " ";
        }
        
        return answer;
    }
}

끝-!