Python 语言栈(stack)实现
class Stack:
def __init__(self):
self.stack = []
def push(self, item):
self.stack.append(item)
def pop(self):
return self.stack.pop()
def peek(self):
if len(self.stack) > 0:
return self.stack[-1]
else:
return False
def is_empty(self):
if len(self.stack) == 0:
return True
else:
return False
def size(self):
return len(self.stack)
def display(self):
print(self.stack)
stack1 = Stack()
print(stack1.peek())
print(stack1.size())
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