Maximum number from array

"""
Maximum number from array
Task number of 78 Unilecs (https://vk.com/unilecs)
This function solve task from https://vk.com/@unilecs-task-77-proveryaem-chislo-na-prostotu-bez-ciklov
"""

def function(array: list):
	def biggest(a:int, b:int):
		a = str(a)
		b = str(b)
		return int(a + b) > int(b + a)


	def w_print(array: list):
		return ''.join(list(map(str, array)))


	# selection* sort
	for i in range(len(array) - 1):
		# fixed array[i]
		for j in range(i + 1, len(array)):
			if biggest(array[j], array[i]): # reverse order
				# swap a[i] <=> a[j]
				(array[i], array[j]) = (array[j], array[i])

	return w_print(array)


assert function([819, 6, 89, 402, 4023, 54, 5]) == '8981965544024023', 'Task one not solved'
assert function([89, 899]) == '89989', 'Task two not solved'
assert function([10, 159, 865, 74, 3, 25, 4589, 23, 52]) == '865745245893252315910', 'Task three not solved'