How can I optimize performance using different collection types?

How can I optimize performance using different collection types?

To optimize performance, consider using the right collection type for your data. For example, use arrays for ordered data and hash maps for quick lookups.

What are the differences between arrays and linked lists?

Arrays provide fast access to elements but have a fixed size, while linked lists allow dynamic sizing but have slower access times.

When should I use a set instead of a list?

Use a set when you need to ensure uniqueness and perform fast membership tests, while lists are better for ordered collections.

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

A hash map is ideal for scenarios where you need to associate keys with values, like storing user profiles by user ID.