What are the basic operations of a deque?

What are the basic operations of a deque?

A deque, or double-ended queue, allows insertion and deletion of elements from both ends. The basic operations include push_front, push_back, pop_front, and pop_back.

Can you explain how to implement a deque in Python?

Sure! You can use the collections.deque class in Python. Here's a simple example: from collections import deque; d = deque(); d.append(1); d.appendleft(2).

What are some use cases for a deque?

Deques are useful for implementing queues, stacks, and for scenarios where you need fast access to both ends, like in a sliding window algorithm.

How does a deque differ from a regular queue?

A regular queue allows insertion at the back and deletion from the front, while a deque allows insertion and deletion from both ends.