Min Cost to Connect All Points
Detailed guide and Python implementation for the 'Min Cost to Connect All Points' problem.
Problem Statement
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| is 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.
Write a function minCostConnectPoints(points: List[List[int]]) -> int.
- •1 <= len(points) <= 1000
- •-10^6 <= xi, yi <= 10^6
- •All points are distinct
Examples
points = [[0,0],[2,2],[3,10],[5,2],[7,0]]
20
Connect points as: (0,0)-(2,2) cost 4, (2,2)-(5,2) cost 3, (5,2)-(7,0) cost 4, (2,2)-(3,10) cost 9. Total = 20.
points = [[3,12],[-2,5],[-4,1]]
18
Connecting points: (-4,1) to (-2,5) with cost 6, (-2,5) to (3,12) with cost 12. Total 18.
Need a Hint?
Edge Cases to Watch
- Empty input structures
- Single element inputs
- Large numerical bounds
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