✔ 문제

✔ 해결

class Solution {
  public int solution(String s) {
    String answer = "";
    int number = 0;
    
    String[] sArr = s.split("");
    number = s.length() / 2;
    
    if(s.length() % 2 == 0) {
      answer = sArr[number -1] + sArr[number];
    }else {
      answer = sArr[number];
    }
    
    return answer;
  }
}