What is array indexing in programming?

What is array indexing in programming?

Array indexing refers to accessing elements in an array using their index or position. In most programming languages, indexing starts at 0.

Can you give me an example of how to index an array in Python?

Sure! In Python, if you have an array like arr = [10, 20, 30], you can access the first element with arr[0], which will return 10.

What happens if I try to access an index that doesn't exist?

If you try to access an index that doesn't exist, you'll get an IndexError. For example, arr[3] would raise an error since arr only has indices 0, 1, and 2.

Are there different indexing methods in other programming languages?

Yes, different languages may have different indexing methods. For example, some languages like MATLAB use 1-based indexing, meaning the first element is accessed with index 1.