✔ 문제

✔ 해결

class Solution {
  public String solution(String rsp) {
    String answer = "";
    String[] arr = rsp.split("");
    for(int i = 0; i < arr.length; i++){
      if(arr[i].equals("2")) {
        arr[i] = "0";
      }else if(arr[i].equals("5")) {
        arr[i] = "2";
      }else if(arr[i].equals("0")) {
        arr[i] = "5";
      }
      answer += arr[i];
    }
    return answer;
  }
}