When should I use hash tables in programming?

When should I use hash tables in programming?

Hash tables are great for situations where you need fast lookups, insertions, and deletions. They use key-value pairs.

Can you give me an example of when to use a hash table?

Sure! If you're implementing a phone book, a hash table can quickly find a person's number using their name as the key.

What are the downsides of using hash tables?

Some downsides include potential collisions, which can slow down performance, and they use more memory compared to other data structures.

Are there alternatives to hash tables?

Yes, alternatives include arrays, linked lists, and binary search trees, each with its own advantages depending on the use case.