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* Retranslate the complete English edition from Simplified Chinese * Polish three English explanations after reader-focused review
40 lines
962 B
Python
40 lines
962 B
Python
"""
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File: queue.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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from collections import deque
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"""Driver code"""
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if __name__ == "__main__":
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# Initialize the queue
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# In Python, we generally use the deque class as a queue
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# Although queue.Queue() is a dedicated queue class, deque is more convenient for this example
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que: deque[int] = deque()
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# Enqueue elements
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que.append(1)
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que.append(3)
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que.append(2)
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que.append(5)
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que.append(4)
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print("Queue que =", que)
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# Access the front element
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front: int = que[0]
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print("Front element front =", front)
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# Dequeue an element
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pop: int = que.popleft()
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print("Dequeued element pop =", pop)
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print("After dequeuing, que =", que)
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# Get the queue size
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size: int = len(que)
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print("Queue size =", size)
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# Check whether the queue is empty
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is_empty: bool = len(que) == 0
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print("Is the queue empty =", is_empty)
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