2013. Detect Squares

LeetCodeArrayHash TableDesignCountingData StreamOpen on judge ↗

You are given a stream of points on the X-Y plane. Design an algorithm that: - Adds new points from the stream into a data structure. Duplicate points are allowed and should be treated as different points. - Given a query point, counts the number of ways to choose three points from the data structure such that the three points and the query point form an axis-aligned square with positive area.

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solution.cppC++17

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