Solution Review: Closest Pair of Points

Solution # 1

A naive solution to this approach is to compute all possible distances between each pair of points, while keeping a minimum distance, and return the minimum distance at the end.

Time Complexity

This brute force solution runs in $O(n^2)$ since we are calculating the distance of one point with every other point to find the minimum

Solution # 2 (Efficient)

We can find out the closest pair of points using a divide and conquer approach as follows: