Clear, but O(n*log(n)) complexity instead of naive O(n)

This solution is very old, .at didn't exist when it was written.

you can use arr.at(-1) instead of arr[arr.length -1]

They are defined already as part of the kata, just not in the part of the code that you can edit.

How can we call functions> that not defined? Can someone explain?))

similar to mine but MAN it took me 3 whole days because i wrote lenght instead of length lol.

I like this one as well. Pretty much clean, but I think that we are missing this part "Signature will always contain 3 numbers;"

this is a reference to the instance of Number on which you called the method times.

Who is "this" ?

4 months old and I concur concur. I also used sort not realizing how inefficient it is. Thanks for the learning.

I like this answer a lot.

Your comment is 2 years old but I concur.

How???

Alright guys, we found a mathematician.

I've done the same way but without understanding what I'm doing. Merely some kind of instinct helped me.
Please, point me out to the theme about this kata in MDN.