dwa_1065_max_min_linear.py

def find_max_min(array):
	max_val, min_val = None, None
	if len(array) == 1:
		max_val = min_val = array[0]
	elif array:
		max_val, min_val = (array[0], array[1]) if array[0] > array[1] else (array[1], array[0])

	for itr in array[2:]:
		if itr > max_val:
			max_val = itr
		elif itr < min_val:
			min_val = itr

	return min_val, max_val

arr = [1,2,-9]
print(find_max_min(arr))