Closest Pair of Points

From GeeksforGeeks. Divide-and-conquer closest pair algorithm. Solve the geometry problem "Closest Pair of Points".

Examples
Input: [1,2,3]
Output: 0
Hints

Closest Pair of Points

**From GeeksforGeeks.** Divide-and-conquer closest pair algorithm. Solve the geometry problem "Closest Pair of Points".