How do I choose the right collection type in C#?

What factors should I consider when choosing a collection type in C#?

You should consider factors like performance, memory usage, and the specific operations you need to perform.

Can you explain the differences between List, Array, and Dictionary?

Sure! A List is a dynamic array, an Array is a fixed-size collection, and a Dictionary stores key-value pairs for fast lookups.

When should I use a HashSet instead of a List?

Use a HashSet when you need unique elements and fast lookups, as it offers O(1) complexity for these operations.

Are there any performance considerations I should be aware of?

Yes, different collection types have varying performance characteristics. For example, Lists are great for indexed access, while Dictionaries excel in search operations.