When should I use arrays instead of collections?

When should I use arrays instead of collections?

You should use arrays when you have a fixed size of elements and need fast access by index. Collections are better for dynamic sizes.

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

Sure! Use an array for storing a list of days in a week. Use a collection like a List for a dynamic list of user inputs.

What are the performance differences between them?

Arrays have better performance for indexed access, while collections offer more flexibility and built-in methods for manipulation.

Are there any downsides to using arrays?

Yes, arrays have a fixed size, which can lead to wasted space or the need for resizing, while collections can grow dynamically.