From: Rich McMullen <lists@...>
Date: 2012-05-23T21:22:44+09:00
Subject: How to replace a letter with a corresponding number

I am working through the Ruby Quiz website and I am already stuck on
number 1 - Solitaire Cypher.

I have a string, let's say "RUBYC ODEIS THEBE STXXX".  I need to convert
each letter to its corresponding number (i.e., A=1, B=2, etc.).

I had hoped I could use gsub with a regexp like this:

coded_text = text.gsub(/[A-Z/,[1-26])

but that doesn't work.  Any ideas?

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