Convex Hull of a set of points, in 2D plane, is a convex polygon with minimum area such that each point lies either on the boundary of polygon or inside it. Now given a set of points the task is to find the convex hull of points.
Your Task:
You don't need to read or print anything. Your task is to complete the function FindConvexHull() which takes points_list as input parameter and returns Convex Hull of given points in a list. If not possible returns a list containing -1.
Expected Time Complexity: O(nlog(n)) Expected Space Complexity: O(n) where n = total no. of points
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Avoid using static/global variables in coding problems as your code is tested
against multiple test cases and these tend to retain their previous values.
Passing the Sample/Custom Test cases in coding problems does not guarantee the
correctness of code. On submission, your code is tested against multiple test cases
consisting of all possible corner cases and stress constraints.
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