Would it be maybe better to use a .expect("Array is empty") to handle that case for general use?

It's not a best practice though, if there is a unwrap there is no best practice imo

Your solution is correct, unlike the currently highest rated "Best Practices" one (Jan 2025). Floating point maths is not accurate.

the description says the input is always valid

What if there is unicode char as the first element?
What happens if the input is an empty string which is then unwraped?

For anyone wondering why you can use bool as 1 and 0 https://github.com/python/cpython/blob/main/Doc/c-api/bool.rst#id3

Booleans in Python are implemented as a subclass of integers.

Nice one! Got something new for me, thx :)

haha! Nice one
Just Waiting to see this kind of clever solution.

Lean and mean!

Yes. True is 1

great work actually

Beautiful.

Voted "best practices" because it only does as much calculation as necessary, unlike the most popular solution. Well done.

I liked the "str::to_string" part.
Clever!