밍쎄의 코딩공간

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); } } a.charAt(i)를 사용하여 a 문자열의 ..