Post_22.4.rb

def assign_correct_santa
  assigned = assign_random_santa
  santa_shuffled = @santa_shuffled.clone
    assigned.each do |person|
      potential = assigned.select{ |other_person| person.assigned_santa.legit_santa(other_person) && 
				    other_person.assigned_santa.legit_santa(person) }
      unless potential.empty?
        other_person = potential [ rand ]
        to_swap = person.assigned_santa
        person.assigned_santa = other_person.assigned_santa
        other_person.assigned_santa = to_swap
      end
   end
end