array_stack
array_stack.py 源码
# 使用数组实现的栈
class ArrayStack:
def __init__(self, capacity: int):
self.data = []
self.size = 0
self.capacity = capacity
# 入栈
def push(self, val: int):
if self.size >= self.capacity:
raise RuntimeError('the stack is full')
self.data.append(val)
self.size += 1
# 出栈
def pop(self) -> int:
if self.size <= 0:
raise RuntimeError('the stack is empty')
res = self.data[self.size - 1]
self.data = self.data[:self.size - 1]
self.size -= 1
return res
if __name__ == '__main__':
stack = ArrayStack(10)
stack.push(1)
stack.push(6)
stack.push(3)
print(stack.pop())
print(stack.pop())
print(stack.pop())
stack.push(10)
print(stack.pop())
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