therubygame palindrome solution

gistfile1.rb

def find_longest_palindrome(string)
  (string.size/2).downto(1) do |n|
    if m = string.match(Regexp.new("#{'(.)' * (n+1)}?\\#{n.downto(1).to_a.join('\\')}"))
      return m
    end
  end
end

Argh! thank you for the explanation. For ruby 1.9.x looks like it's a sort of bug (even if I know it's almost weird to use very long regex). I know it's not as fast as other ways, but it was fun to test alternatives ;)

cheers!