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* Retranslate the complete English edition from Simplified Chinese * Polish three English explanations after reader-focused review
37 lines
867 B
Python
37 lines
867 B
Python
"""
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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 the stack
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# Python has no built-in stack class; a list can be used as a stack
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stack: list[int] = []
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# Push elements onto the stack
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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 the top element
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peek: int = stack[-1]
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print("Top element peek =", peek)
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# Pop an element from the stack
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pop: int = stack.pop()
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print("Popped element pop =", pop)
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print("After popping, stack =", stack)
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# Get the stack size
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size: int = len(stack)
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print("Stack size =", size)
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# Check whether it is 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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