def bubble_sort(data):
'''
冒泡排序
? ? :paramdata:
? ? :return:
'''
? ? length =len(data)
????for i in range(length -1):
????????for j in range(length - i -1):
????????????if data[j] > data[j +1]:
????????????????data[j], data[j +1] = data[j +1], data[j]
????return data
