Avkodar Rövarspråket i Ruby

gistfile1.rb

require 'set'
swedish_consonants = "bcdfghjklmnpqrstvwxz".chars.to_set

code = "vovatottotenonkokokokarore".chars

result = [code.first]
i = 1

while (i < code.length)
  if code[i] == "o" && code[i-1] == code[i+1] && swedish_consonants.include?(code[i-1])
    code[i+1] = "☃" # So that second o in kokokok is parsed correctly.
    i += 2
  else
    result << code[i]
    i += 1
  end
end

result.join

=> "vattenkokare"

https://twitter.com/jonelf/status/565843820588572672

'rorövovarorsospoproråkoketot'.gsub(/([bcdfghjklmnpqrstvxz])o\1/, '\1')
'kalle blomkvist'.gsub(/([bcdfghjklmnpqrstvxz])/, '\1o\1')