Not all the code I've done is up there. Also, I only recently started putting code up, so the commit times aren't actually when I did the problem; I'm not that fast.
Here's my Project Euler profile: http://projecteuler.net/index.php?section=profile&profil... . Feel free to ask any questions. I generally stopped optimizing code once it ran in less than a minute, so there are definitely some problems that could be optimized more.
