sleep_sort.exs

defmodule SleepSort do

  def sort(list_of_numbers) do
    {:ok, sorted_list} = Agent.start(fn -> [] end)
    
    Enum.map(list_of_numbers, fn number ->
      Task.start(fn -> 
        :timer.sleep(number * 1)        
        Agent.update(sorted_list, fn l -> [ number | l ] end)
      end)
    end)

    :timer.sleep(Enum.max(list_of_numbers) + 1)
    Agent.get(sorted_list, fn list -> Enum.reverse(list) end)
  end

end