這個在官網中list支持,有實現。html
補充一下棧,隊列的特性:python
1.棧(stacks)是一種只能經過訪問其一端來實現數據存儲與檢索的線性數據結構,具備後進先出(last in first out,LIFO)的特徵數據結構
2.隊列(queue)是一種具備先進先出特徵的線性數據結構,元素的增長只能在一端進行,元素的刪除只能在另外一端進行。可以增長元素的隊列一端稱爲隊尾,能夠刪除元素的隊列一端則稱爲隊首。app
地址在 http://docs.python.org/2/tutorial/datastructures.html#more-on-lists ,下面的官方的代碼。spa
關於棧
>>> stack = [3, 4, 5] >>> stack.append(6) >>> stack.append(7) >>> stack [3, 4, 5, 6, 7] >>> stack.pop() 7 >>> stack [3, 4, 5, 6] >>> stack.pop() 6 >>> stack.pop() 5 >>> stack [3, 4]
關於隊列
>>> from collections import deque >>> queue = deque(["Eric", "John", "Michael"]) >>> queue.append("Terry") # Terry arrives >>> queue.append("Graham") # Graham arrives >>> queue.popleft() # The first to arrive now leaves 'Eric' >>> queue.popleft() # The second to arrive now leaves 'John' >>> queue # Remaining queue in order of arrival deque(['Michael', 'Terry', 'Graham'])
上面代碼很清晰的解釋了上面的2種結構