From: Ruby Quiz <james@...>
Date: 2007-12-08T05:45:02+09:00
Subject: [QUIZ] Word Loop (#149)

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Here's a fun little challenge from the Educational Computing Organization of
Ontario.

Given a single word as input try to find a repeated letter inside of it such
that you can loop the text around and reuse that letter.  For example:

	$ ruby word_loop.rb Mississippi
	 i
	 p
	 p
	Mis
	 ss
	 si

or:

	$ ruby word_loop.rb Markham
	Ma
	ar
	hk

or:

	$ ruby word_loop.rb yummy
	yu
	mm

If a loop cannot be made, your code can just print an error message:

	$ ruby word_loop.rb Dana
	No loop.