What are the differences between a hash map and a binary tree?

What are the differences between a hash map and a binary tree?

A hash map is a data structure that uses key-value pairs for fast data retrieval, while a binary tree is a hierarchical structure with nodes.

Which one is more efficient for searching data?

Hash maps generally offer O(1) average time complexity for search operations, while binary trees have O(log n) for balanced trees.

Are there any scenarios where a binary tree is preferred over a hash map?

Yes, binary trees are preferred when you need to maintain sorted data or perform range queries.

Can you give me an example of when to use each?

Use a hash map for quick lookups like caching user sessions, and a binary tree for applications like a priority queue.