@Test
public void getMatrixHeavy() {

    int n = 3;
    int[][] array = {{1, 3, 3}, {2, 1, 3}, {2, 2, 1}};
      int[][] array = new int[n][];
      int count = 0;
      for (int i = 0; i < array.length; i++) {
          int[] temp = new int[n];
          for (int j = 0; j < temp.length; j++) {
              temp[j] = ++count;
          }
          array[i] = temp;
      }
    System.out.println("getMatrixHeavy, n is: " + n + ", res is: " + DataUtil.getMatrixHeavy(array, n, n));
}