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「隊列 queue」是一種遵循先入先出規則的線性數據結構。顧名思義,隊列模擬了排隊現象,即新來的人不斷 加入隊列尾部,而位於隊列頭部的人逐個離開。 在 Python 中,我們一般將雙向隊列類 deque 當作隊列使用 ,雖然 queue.