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1453. Maximum Number of Darts Inside of a Circular Dartboard

You have a very large square wall and a circular dartboard placed on the wall. You have been challenged to throw darts into the board blindfolded. Darts thrown at the wall are represented as an array of points on a 2D plane. 

Return the maximum number of points that are within or lie on any circular dartboard of radius r.

 

Example 1:

Input: points = [[-2,0],[2,0],[0,2],[0,-2]], r = 2
Output: 4
Explanation: Circle dartboard with center in (0,0) and radius = 2 contain all points.

Example 2:

Input: points = [[-3,0],[3,0],[2,6],[5,4],[0,9],[7,8]], r = 5
Output: 5
Explanation: Circle dartboard with center in (0,4) and radius = 5 contain all points except the point (7,8).

Example 3:

Input: points = [[-2,0],[2,0],[0,2],[0,-2]], r = 1
Output: 1

Example 4:

Input: points = [[1,2],[3,5],[1,-1],[2,3],[4,1],[1,3]], r = 2
Output: 4

 

Constraints:

  • 1 <= points.length <= 100
  • points[i].length == 2
  • -10^4 <= points[i][0], points[i][1] <= 10^4
  • 1 <= r <= 5000

Difficulty:

Hard

Lock:

Normal

Company:

Facebook

Problem Solution

1453-Maximum-Number-of-Darts-Inside-of-a-Circular-Dartboard

All Problems:

Link to All Problems
All contents and pictures on this website come from the Internet and are updated regularly every week. They are for personal study and research only, and should not be used for commercial purposes. Thank you for your cooperation.