--- source: platform: leetcode problemId: 1584 tags: graphs, prims-algorithm --- You are given an array `points` representing integer coordinates of some points on a 2D-plane, where `points[i] = [xi, yi]`. The cost of connecting two points `[xi, yi]` and `[xj, yj]` is the **manhattan distance** between them: `|xi - xj| + |yi - yj|`, where `|val|` denotes the absolute value of `val`. Return _the minimum cost to make all points connected._ All points are connected if there is **exactly one** simple path between any two points. **Example 1:** ![](https://assets.leetcode.com/uploads/2020/08/26/d.png) Input: points = [[0,0],[2,2],[3,10],[5,2],[7,0]] Output: 20 Explanation: We can connect the points as shown above to get the minimum cost of 20. Notice that there is a unique path between every pair of points. **Example 2:** Input: points = [[3,12],[-2,5],[-4,1]] Output: 18 **Constraints:** * `1 <= points.length <= 1000` * `-106 <= xi, yi <= 106` * All pairs `(xi, yi)` are distinct. https://leetcode.com/problems/min-cost-to-connect-all-points/