[Programmers] Lv.0 / 대소문자 바꿔서 출력하기 / Java

문제

 

풀이

import java.util.Scanner;

public class Solution {
    public static void main(String[] args) {
    
        Scanner sc = new Scanner(System.in);
        String a = sc.next();
        String answer = "";
        
        for(int i = 0; i < a.length(); i++){
            char c = a.charAt(i);
            if(Character.isUpperCase(c)) {
                answer += Character.toLowerCase(c);
            } else {
                answer += Character.toUpperCase(c);
            }
        }
        System.out.println(answer);
        sc.close();
    }
}

 

출처

https://school.programmers.co.kr/learn/courses/30/lessons/181949