Monty Hall Problem simulation

monty_hall.rb

def monty_hall
  doors = ['goat', 'stupid goat', 'car']

  doors.delete choice = doors.sample
  doors.delete reveal = doors.grep(/goat/).sample

  puts 'Stay or switch?' until %w[stay switch].include? action = gets.chomp

  choice = doors.last if action == 'switch'

  puts "You got a #{choice}!"
end

loop { monty_hall }