From: Kalman Noel <invalid@...>
Date: 2007-02-04T19:45:05+09:00
Subject: Re: [QUIZ] String Equations (#112)

Ruby Quiz (James E. Gray):
> This week's quiz is to write a program that accepts a list of words on STDIN and
> outputs any one string equation using those words, assuming there is one.  Each
> word in the list may be used zero or more times, but only on one side of the
> equation.  The program should exit(0) on success and exit(1), without printing
> any output, if a solution cannot be found.

Shouldn't there be a requirement that an equations is invalid if there is
another, shorter equation that uses the same words? Otherwise:

	$ ruby quiz112.rb foo oof
	"foo"  =  "oof"
	"foo" + "foo"  =  "oof" + "oof"
	"foo" + "foo" + "foo"  =  "oof" + "oof" + "oof"
	...

Kalman