Lec 16 MIT 6.046J 18.410J Introduction to Algorithms (SMA 5503), Fall 2005
-- valuable experience. OK, today we're going to start talking about a particular class of algorithms called greedy algorithms. But we're going to do it in the context of graphs. So, I want to review a little bit about graphs, which mostly you can find in the textbook in appendix B. And so, if you haven't reviewed in appendix B recently, please sit down and review appendix B. It will pay off especially during our take-home quiz. So, just reminder, a digraph, what's a digraph? What's that short for? Directed graph, OK? Directed graph, G equals (V,E), OK, has a set, V, of vertices. And, I always get people telling me that I have one vertice. The singular is not vertice; it is vertex, OK? The plural is vertices. The singular is vertex. It's one of those weird English words. It's probably originally like French or something, right? I don't know. OK, anyway, and we have a set, E, which is a subset of V cross V of edges. So that's a digraph. ...