Good morning! Here's your coding interview problem for today.
This problem was asked by Google.
Given a set of points (x, y) on a 2D cartesian plane, find the two closest points. For example, given the points [(1, 1), (-1, -1), (3, 4), (6, 1), (-1, -6), (-4, -3)], return [(-1, -1), (1, 1)].