Begin forwarded message:

> From: "Clark Grubb" <clarkgrubb / gmail.com>
> Date: December 8, 2007 7:13:30 PM CST
> To: submission / rubyquiz.com
> Subject: Please Forward: Ruby Quiz Submission
>
> word_loop.rb
> ==========
> mid_pattern = (1..((ARGV[0].length-2)/2)).collect do |i|
>  ".{#{2*i+1},#{2*i+1}}"
> end.join('|')
> if ARGV[0].match(/(.)(#{mid_pattern})\1/i)
>  pre,letter,mid,post = $`,$1,$2,$'
>  pre_space = pre.gsub(/./,' ')
>  post.split('').reverse.each { |c| puts "#{pre_space}#{c}" }
>  puts "#{pre}#{letter}#{mid[0].chr}"
>  ((mid.length - 1)/2).times do |i|
>    puts "#{pre_space}#{mid[-i].chr}#{mid[i+1].chr}"
>  end
> else
>  puts "No loop."
> end