# FAQs

## What do they do?

Data structures are collections of values, the relationship among them, and the function or operations that can be applied to the data.

## Why So Many?

Different data structures excel at different things. Some are highly specialized, while others (like arrays) are more generally used.

## Why Care?

The more time you spend as a developer, the more likely you'll need to use one of these data structures

You've already worked with many of them unknowingly

They all excel in different situations.