What are the most efficient data structures for memory usage?

What are the most efficient data structures for memory usage?

Some of the most memory-efficient data structures include arrays, linked lists, and hash tables. Each has its own trade-offs.

Can you explain why linked lists are more memory-efficient than arrays?

Linked lists can be more memory-efficient because they allocate memory dynamically, allowing for flexible sizing without wasting space.

What about hash tables? How do they compare?

Hash tables can be efficient in terms of access time, but they may use more memory due to the need for storing keys and handling collisions.

Are there specific scenarios where one is preferred over the others?

Yes, for example, use arrays for fixed-size collections and linked lists for dynamic collections where frequent insertions and deletions occur.