This only works because of the EVEN amount of repeated numbers.

I learned something new: the params keyword exists, and we can use it to pass an arbitrary number of parameters of the same type, and the function will treat them as an array.

no, this solution about a lot of copiyng

damn you regex !!!

Haha. I dismissed regex, thinking it wouldn't be performant enough.
Damn.
Edit: turns out this simple solution is at least as performant as mine.

Nope it gives Nan

i learn this line from someone's solution.
you can get the same question in "Replace letters" question.
idk is this the name or not, im just paste(ing)
user:- "KenKamau, fenring76, TFeld, ssfellows, jamsyl, Dima806, zatoichi49, thornejosh, mwk48, akar-0 (+ 7)"

Wow, you good!

Hmmm

Interesting approach. Haven't seen it before.

Ouch! The time complexity is O(n^3), when it can be done in linear time.

This solution has me stumped. I totally don't get how this works.