When should I use Kruskal as opposed to Prim (and vice versa)?

Question

I was wondering when one should use Prim\'s algorithm and when Kruskal\'s to find the minimum spanning tree? They both have easy logics, same worst cases, and only differenc

Answer 1

The best time for Kruskal's is O(E logV). For Prim's using fib heaps we can get O(E+V lgV). Therefore on a dense graph, Prim's is much better.