冒泡排序

a=[1,2,3,4,77,34,65,12,7,90,35]
def card(a):
for i in range(len(a)):循环次数
for j in range(len(a) - i - 1): # j为列表下标
if a[j] > a[j + 1]:
a[j], a[j + 1] = a[j + 1], a[j]
return a

print(card(a))