Minimum Moves to Equal Array Elements II

From LeetCode. Minimize sum of absolute distances (median). Solve the geometry problem "Minimum Moves to Equal Array Elements II".

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

Minimum Moves to Equal Array Elements II

**From LeetCode.** Minimize sum of absolute distances (median). Solve the geometry problem "Minimum Moves to Equal Array Elements II".