the point is for you to be able to explain your code to someone you might be working with. Can you explain it clearly? Are you enthusiastic about it? Find something that was fun in college; maybe something you could talk about right now if you had to. That's where I'd start.
BTW, Google does code reviews.
No, this is Slashdot. Replace "Google" with "Microsoft" if you really want outrage.
the point is for you to be able to explain your code to someone you might be working with. Can you explain it clearly? Are you enthusiastic about it? Find something that was fun in college; maybe something you could talk about right now if you had to. That's where I'd start. BTW, Google does code reviews.