通过list实现堆栈

堆栈就是存储数据的一种数据结构,后存入的数据,会被先取出(先进后出)

>>> stack = [3, 4, 5]
>>> stack.append(6)
>>> stack.append(7)
>>> print (stack)
[3, 4, 5, 6, 7]
>>> print (stack.pop())
7
>>> print (stack)
[3, 4, 5, 6]
>>> print (stack.pop())
6
>>> print (stack.pop())
5
>>> print (stack)
[3, 4]
>>>

 

通过list实现队列

先进先出

>>> a=[]
>>> a.append(1)
>>> a.append(2)
>>> a.append(3)
>>> a
[1, 2, 3]
>>> a.pop(0)
1
>>> a.pop(0)
2
>>> a.pop(0)
3
>>> a.pop(0)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
IndexError: pop from empty list
posted on 2019-10-04 20:40  腿短毛不多  阅读(623)  评论(0编辑  收藏  举报