Version Ordering Problem

version_ordering.rb

#!/usr/bin/env ruby

# ================================
# = Author: Jasdeep Singh Narang =
# = Date: 29th November 2011     =
# = Problem:  Version Ordering   =
# ================================

def sort(version_list)
  version_list.sort!{|first,second| parse_version(first) <=> parse_version(second) }
  puts version_list
end

def parse_version(version)
  version.scan(/(\d+)|([a-z]+)/).map{|number,letter| letter ? letter.unpack('c*') : [number.to_f]}
end

versions = %w("Space Seperated Version Numbers go here")

sort(versions)