If you're gonna bring numpy into it you may as well use np.diff(): def maxWidthOfVerticalArea(self, points: List[List[int]]) -> int: return np.diff

If you're gonna bring numpy into it you may as well use np.diff(): def maxWidthOfVerticalArea(self, points: List[List[int]]) -> int: return np.diff(sorted(x for x, _ in points)).max()