#3625

Count Number of Trapezoids II

master · 1730 · lc hard +32 · 40.1% accepted · 259 likes · top 19%

Description

An array points[i] = [xi, yi] gives coordinates of points on a Cartesian plane.

A trapezoid is a convex quadrilateral with at least one pair of parallel sides.

Count and return the distinct trapezoids that can be formed by choosing any four distinct points.

Code

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