IKR. Got confused by a sec reading the code.

it's out of brain

tu prueba esta mal, estás pasando ([1, 2, 3], [3, 4, 5]) (un tuple con dos listas) a la función. La función está duplicando cada elemento del tuple (cada lista) Por eso lo que te salió fue cada lista duplicada ([1, 2, 3] * 2 = [1, 2, 3, 1, 2, 3])

I love this! Thanks for teaching me a new function. :)

beautiful

i like that you considered a class for this, but it's overkill

beautiful!

Mutating an argument is the worst thing you can do.

Its not. Very simple bcoz using just a single mehod that returs 0 if negative or an addition result. Very logical and concise solution.

Nice ,short, and clean code congratulation !!

chars argument is a pointer to a constant characters i.e., you cannot modify the contents of address to which it points to but can modify what string it points to