Attempting to write some Ruby

[spudfkc]

@jaybobo

[jaybobo]

nice use of min_by!

theoretically, you could also check for if array. i'd like to call attention to two things.

1. there's a lot of great options when working in rails - https://stackoverflow.com/questions/885414/a-concise-explanation-of-nil-v-empty-v-blank-in-ruby-on-rails
2. there's something to keep in mind when using unless.
   http://www.railstips.org/blog/archives/2008/12/01/unless-the-abused-ruby-conditional/