ruby quiz The Solitaire Cipher

solitaire cipher：http://en.wikipedia.org/wiki/Solitaire_(cipher)

https://www.schneier.com/solitaire.html

http://www.ciphergoth.org/crypto/solitaire/

ruby quiz learned - Solitaire Cipher

http://www.cnblogs.com/zxotl/archive/2013/01/19/2867645.html