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40 lines
950 B
40 lines
950 B
"""
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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 queue
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# In Python, we generally consider the deque class as a queue
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# Although queue.Queue() is a pure queue class, it's not very user-friendly
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que: deque[int] = deque()
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# Element enqueue
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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 front element
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front: int = que[0]
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print("Front element front =", front)
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# Element dequeue
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pop: int = que.popleft()
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print("Dequeued element pop =", pop)
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print("Queue after dequeue =", que)
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# Get the length of the queue
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size: int = len(que)
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print("Queue length size =", size)
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# Determine if 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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