[level 2] 카펫 - 42842

문제 링크

프로그래머스

class Solution {

    public int[] solution(int brown, int yellow) {
       int total = brown + yellow;

       for (int i = 3; i * i <= total; i++) {
          if (total % i != 0) {
             continue;
          }
          
          int height = i;
          int width = total / i;
          
          if ((height - 2) * (width - 2) == yellow) {
             return new int[]{width, height};
          }
       }

       return new int[]{-1, -1};
    }
}