def secret_santa_game

  givers = ["Luke Skywalker luke@theforce.net",
            "Leia Skywalker leia@therebellion.org",
            "Toula Portokalos toula@manhunter.org",
            "Gus Portokalos gus@weareallfruit.net",
            "Bruce Wayne bruce@imbatman.com",
            "Virgil Brigman virgil@rigworkersunion.org",
            "Lindsey Brigman lindsey@iseealiens.net"]

  recipients = givers.dup

  pairs = []

  while givers.any?
    recipients.shuffle!
    if (givers.first == recipients.last) && (givers.length > 1)
      next
    end

    secret_santa = givers.shift()
    selected_name = recipients.pop

     if secret_santa != selected_name
       pairs << "#{secret_santa} is the secret santa of #{selected_name}"
     else
      return :try_again
     end
end

  return pairs

end

pairs = :try_again

while pairs == :try_again
  pairs = secret_santa_game
end

puts pairs