Deque
A deque is a versatile data structure that allows the insertion and deletion of elements from both ends of the sequence, making it a generalization of both stacks and queues. Deques can operate as both a stack and a queue, providing greater flexibility in how elements are added or removed.
Let’s highlight the properties of deques:
- Insertions and deletions at both ends: Elements can be added or removed from either the front or the rear of the deque. For example, we can push elements onto the front or rear of the deque and pop them off from either end as well.
- No fixed direction: Deques do not enforce a strict LIFO or FIFO order; instead, they allow operations at both ends. For instance, we can treat a deque as a stack by only using one end or as a queue by using both ends.
- Dynamic size: Deques can dynamically grow or shrink as elements are added or removed from either end.
- No random access: Like stacks and queues, deques do not allow direct access...
