“`”<\/p>\n
<ul>
\n<li>Stack() \u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u7a7a\u6808<\/li>
\n<li>push(item) \u6dfb\u52a0\u4e00\u4e2a\u65b0\u7684\u5143\u7d20item\u5230\u6808\u9876<\/li>
\n<li>pop() \u5f39\u51fa\u6808\u9876\u5143\u7d20<\/li>
\n<li>peek() \u8fd4\u56de\u6808\u9876\u5143\u7d20<\/li>
\n<li>is_empty() \u5224\u65ad\u6808\u662f\u5426\u4e3a\u7a7a<\/li>
\n<li>size() \u8fd4\u56de\u6808\u7684\u5143\u7d20\u4e2a\u6570<\/li>
\n<\/ul><\/p>\n
\u00a0<\/p>\n
\u00a0<\/p>\n
<pre><code># \u5b9e\u73b0\u4e00\u4e2a\u6808stack,\u540e\u8fdb\u5148\u51fa<\/p>\n
'''
\nclass Stack:
\n def __init__(self):
\n self.items = []<\/p>\n
def is_empty(self):
\n # \u5224\u65ad\u662f\u5426\u4e3a\u7a7a
\n return self.items == []<\/p>\n
def push(self,item):
\n # \u52a0\u5165\u5143\u7d20
\n self.items.append(item)<\/p>\n
def pop(self):
\n # \u5f39\u51fa\u5143\u7d20
\n return self.items.pop()<\/p>\n
def peek(self):
\n # \u8fd4\u56de\u6808\u9876\u5143\u7d20
\n return self.items[len(self.items)-1]<\/p>\n
def size(self):
\n # \u8fd4\u56de\u6808\u7684\u5927\u5c0f
\n return len(self.items)<\/p>\n
if __name__ == ""__main__"":
\n stack = Stack()
\n stack.push(""H"")
\n stack.push(""E"")
\n stack.push(""L"")
\n print(stack.size()) # 3
\n print(stack.peek()) # L
\n print(stack.pop()) # L
\n print(stack.pop()) # E
\n print(stack.pop()) # H
\n'''
\n<\/code><\/pre><\/p>\n
\u00a0<\/p>\n
\u00a0<\/p>\n
\u00a0<\/p>\n
<pre><code> "“`
\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"
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