2) 대소문자 변환 with JAVA

Q. 대소문자 변환하기

 

A.

public class convertChar {
    public String solution(String str) {
        String answer = "";
        for(char x : str.toCharArray()) {
            if( x >= 97 && x <= 122 ) answer += (char)(x-32);
            else answer += (char)(x+32);
        }
        return answer;
    }

    public static void main(String[] args) {
        convertChar T = new convertChar();
        Scanner kb = new Scanner(System.in);
        String str = kb.next();
        System.out.print(T.solution(str));
    }
}