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37 lines
859 B
37 lines
859 B
"""
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File: stack.py
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Created Time: 2022-11-29
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Author: Peng Chen (pengchzn@gmail.com)
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"""
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"""Driver Code"""
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if __name__ == "__main__":
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# Initialize stack
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# Python does not have a built-in stack class, but you can use a list as a stack
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stack: list[int] = []
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# Element push
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stack.append(1)
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stack.append(3)
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stack.append(2)
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stack.append(5)
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stack.append(4)
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print("Stack stack =", stack)
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# Access stack top element
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peek: int = stack[-1]
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print("Stack top element peek =", peek)
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# Element pop
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pop: int = stack.pop()
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print("Popped element pop =", pop)
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print("Stack after pop =", stack)
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# Get the length of the stack
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size: int = len(stack)
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print("Stack length size =", size)
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# Determine if it's empty
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is_empty: bool = len(stack) == 0
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print("Is the stack empty =", is_empty)
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