def count_down(x):
	if x < 0:
		print('Done!')
		return
	print(x)
	count_down(x - 1)

count_down(10)

def count_up(x, maximum):
	if x > maximum:
		print("Done!")
		return
	print(x)
	count_up(x + 1, maximum)

count_up(0, 10)