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class Solution:
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    def maxWidthOfVerticalArea(self, points: List[List[int]]) -> int:
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        # only taking x-axis point as it's relevant
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        arr = [i[0] for i in points]
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        arr.sort()
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        diff = -1
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        for i in range(1, len(arr)):
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            diff = max(diff, arr[i] - arr[i - 1])
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        return diff