Update the applications of deque.

This commit is contained in:
krahets
2023-03-12 02:45:10 +08:00
parent b7fa3bbe86
commit bbef87ccfe
3 changed files with 34 additions and 28 deletions

View File

@ -16,34 +16,34 @@ from collections import deque
""" Driver Code """
if __name__ == "__main__":
""" 初始化双向队列 """
duque = deque()
deque = deque()
""" 元素入队 """
duque.append(2) # 添加至队尾
duque.append(5)
duque.append(4)
duque.appendleft(3) # 添加至队首
duque.appendleft(1)
print("双向队列 duque =", duque)
deque.append(2) # 添加至队尾
deque.append(5)
deque.append(4)
deque.appendleft(3) # 添加至队首
deque.appendleft(1)
print("双向队列 deque =", deque)
""" 访问元素 """
front = duque[0] # 队首元素
front = deque[0] # 队首元素
print("队首元素 front =", front)
rear = duque[-1] # 队尾元素
rear = deque[-1] # 队尾元素
print("队尾元素 rear =", rear)
""" 元素出队 """
pop_front = duque.popleft() # 队首元素出队
pop_front = deque.popleft() # 队首元素出队
print("队首出队元素 pop_front =", pop_front)
print("队首出队后 duque =", duque)
pop_rear = duque.pop() # 队尾元素出队
print("队首出队后 deque =", deque)
pop_rear = deque.pop() # 队尾元素出队
print("队尾出队元素 pop_rear =", pop_rear)
print("队尾出队后 duque =", duque)
print("队尾出队后 deque =", deque)
""" 获取双向队列的长度 """
size = len(duque)
size = len(deque)
print("双向队列长度 size =", size)
""" 判断双向队列是否为空 """
is_empty = len(duque) == 0
is_empty = len(deque) == 0
print("双向队列是否为空 =", is_empty)