This one might make you scratch your head a bit -- but learning about hash tables is definitely worth your time and effort.

I know, yeah yeah, big deal But I was wondering if I could get some help creating/printing a histogram of the hash table, w/ values on the y-axis and key on the x-axis. Thanks!

Making fast hash tables in programming, which don't cause collision trouble, is one of computing's holy grails. Facebook thinks it's created a good one.