How do I use the deque from the collections module in Python?

How do I use the deque from the collections module in Python?

The deque (double-ended queue) allows you to add and remove elements from both ends efficiently. You can import it using from collections import deque.

Can you show me some basic operations I can perform with deque?

Sure! You can append elements using append() and appendleft(), and remove them using pop() and popleft().

What are the advantages of using deque over a list?

Deque is optimized for fast fixed-time appends and pops from both ends, while lists are slower for these operations.

Can I use deque as a stack or a queue?

Yes, you can use deque as both a stack (using append and pop) and a queue (using append and popleft).