I've reviewed your solution in a video ! It's in french tho, thx anyways.

haha maybe next time I should read more carefully. I thought it should be equal !!!!

If your total is more than or equal to (win), return 'Winner!'

2 > 1

yea, I completely agree

lol

Haha, I guess so, I managed to have a few tests succesful and mostly have the good behavior for the elevator, but I have some troubles and I don't even know where or why nor how to ask a question about it.

You are sort of right, do not expect this one to be easy, I'm stuck on this for +5 days, and still a couple of final tests are failing

Isn't this solution potentially costly in performance ? (junior developer looking to do best here :) )

Aight, thx for the answers. I'll need to read all that quite a few times and let it cook a little.

You have the correct idea about deep ( or maybe shallow, see above ) copies and mutating the array itself.

Documentation can tell you which methods work by mutation and which by returning a new value.

Mutating input values will mutate it at the called site as well as at the call site, which is dangerous in general and will explicitly fail you in this kata.

Look into the difference between "pure code" and "programming by side effect". Impure code is the source of a lot of very preventable bugs.

I don't know Java ( at all. but I had just seen the term "arrayList" in a Java context ), and I don't understand exactly what your problem is. I'd love to help you, but "I don't understand the mechanism" doesn't tell me what you are not understanding.

My bad, I initially thought js builtins arrays was some kind of improved arrayList.
Then, I don't understand the mechanism at all, even after looking at the docs for js arrays or the solutions to this kata.