mirror of
https://github.com/krahets/hello-algo.git
synced 2024-12-26 10:06:29 +08:00
40 lines
930 B
Python
40 lines
930 B
Python
|
"""
|
||
|
|
File: queue.py
|
||
|
|
Created Time: 2022-11-29
|
||
|
|
Author: Peng Chen (pengchzn@gmail.com)
|
||
|
|
"""
|
||
|
|
|
||
|
|
from collections import deque
|
||
|
|
|
||
|
|
"""Driver Code"""
|
||
|
|
if __name__ == "__main__":
|
||
|
|
# 初始化佇列
|
||
|
|
# 在 Python 中，我們一般將雙向佇列類別 deque 看作佇列使用
|
||
|
|
# 雖然 queue.Queue() 是純正的佇列類別，但不太好用
|
||
|
|
que: deque[int] = deque()
|
||
|
|
|
||
|
|
# 元素入列
|
||
|
|
que.append(1)
|
||
|
|
que.append(3)
|
||
|
|
que.append(2)
|
||
|
|
que.append(5)
|
||
|
|
que.append(4)
|
||
|
|
print("佇列 que =", que)
|
||
|
|
|
||
|
|
# 訪問佇列首元素
|
||
|
|
front: int = que[0]
|
||
|
|
print("佇列首元素 front =", front)
|
||
|
|
|
||
|
|
# 元素出列
|
||
|
|
pop: int = que.popleft()
|
||
|
|
print("出列元素 pop =", pop)
|
||
|
|
print("出列後 que =", que)
|
||
|
|
|
||
|
|
# 獲取佇列的長度
|
||
|
|
size: int = len(que)
|
||
|
|
print("佇列長度 size =", size)
|
||
|
|
|
||
|
|
# 判斷佇列是否為空
|
||
|
|
is_empty: bool = len(que) == 0
|
||
|
|
print("佇列是否為空 =", is_empty)
|