대소문자출력하기

class Solution {
    public String[] solution(String[] strArr) {
        String[] answer = new String[strArr.length];
        
        for(int i = 0; i < strArr.length; i++){
            if((i%2==0)){
                answer[i]=strArr[i].toLowerCase();
            } else {
                answer[i]=strArr[i].toUpperCase();
            }
        }
        return answer;
    }
}