<awangdev>Submatrix Sum_1.java
private boolean validateInput(int[][] nums) {

        if (nums == null || nums.length == 0 || nums[0] == null || nums[0].length == 0) {
            return true;
        }
        return false;
    }
private boolean var_0 ( int [ ] [ ] var_1 ) {
  if ( var_1 == null || var_1 . length == 0 || var_1 [ 0 ] == null || var_1 [ 0 ] . length == 0 ) {
    return true ;
  }
  return false ;
}
