title: Generating multiple random (x, y) coordinates, excluding duplicates?
body: <p>I want to generate a bunch (x, y) coordinates from 0 to 2500 that excludes points that are within 200 of each other without recursion. </p>
  
  <p>Right now I have it check through a list of all previous values to see if any are far enough from all the others. This is really inefficient and if I need to generate a large number of points it takes forever.</p>
  
  <p>So how would I go about doing this?</p>