Haskell Quiz/The Solitaire Cipher

The first puzzle of the rubyquizz series was to implement the Solitaire cipher [1] Bruce Schneier made for Neil Stephenson's Cryptonomicon [2]. The twist is that it's designed to be done by a Spy in a containment camp with no other tools than a deck of bridge cards.

The problem:

• http://www.rubyquiz.com/quiz1.html
• http://www.schneier.com/solitaire.html

Solutions:

• Don