A double-ended queue, or deque, is a versatile data structure that allows insertion and deletion of elements from both ends, making it suitable for use cases requiring dynamic and flexible data access. Deques are often implemented using circular buffers or linked lists and provide efficient O(1) time complexity for operations at both ends.

Double-ended Queue (Deque)

double-ended queue

deque

versatile data structure

insertion and deletion

elements from both ends

Dynamic data access

flexible data access

Use cases are detailed descriptions of how users will interact with a system to achieve specific goals, providing a framework for understanding system requirements and user needs. They are essential for bridging the gap between user expectations and technical specifications, ensuring that the final product aligns with intended functionality.

use cases

circular buffers

A linked list is a linear data structure where elements, called nodes, are stored in a sequence, and each node points to the next, allowing for efficient insertion and deletion. Unlike arrays, linked lists do not require contiguous memory allocation, making them flexible in dynamic memory management, but they have slower access times due to sequential traversal.

linked lists

Efficient time complexity

O(1) time complexity

operations at both ends

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