This is remarkable. The # of ways to solve the same problem is great (ironically, I knew mostly Prim's and Kruskal's algorithms because they are more common), the visualization is great too. I liked the slide format, a bit too long maybe.

Also, since it's a computer science post :) I would have added time complexity, just for sake of completeness.

A big plus to the whole concept of "code kata".

Great stuff.