<awangdev>218. The Skyline Problem_1.java
private boolean isInvalid(int[][] buildings) {

        return buildings == null || buildings.length == 0 || buildings[0] == null || buildings[0].length == 0;
    }
private boolean var_0 ( int [ ] [ ] var_1 ) {
  return var_1 == null || var_1 . length == 0 || var_1 [ 0 ] == null || var_1 [ 0 ] . length == 0 ;
}
