Amity Patrol — Optimal Route (NN Heuristic)
“Hug the coast, hit the nearest fin.” — Harbor Patrol
Challenge: Order coordinates using a nearest-neighbor heuristic.
Operations • Routing
Task:
  1. Implement nearest_neighbor_route(points) returning the visit order.
  2. Start from the first point in the input. Repeatedly visit the closest unvisited point (Euclidean distance).
  3. Click Run Unit Tests. If all tests pass, you'll get the flag.