Underscore is just a convention, "k for k,g in groupby(iterable)" also works perfectly.

kek

You're confusing the output of two different tests, not a kata issue.

I have a really weird problem with this. I am using javascript as language everything is going good. But whenever I try to return my result it's breaking my function. console.log() works how I want it but when I switch it to the return at the end it's breaking the loops and duplicate mess up with my result.

Example
console.log(result.join('')) // prints: (((

return result.join('') //prints: ((((((

Also tried:
console.log(result.join(''))> return (result.join('')) // which means I just deleted console.log() and write return. with parentheses included and without them. can anyone help me

First I tried counting using a dictionary and using replace based on K,V pairs.
and second I tried using replacing iterating over the word
Both of these methods were unsuccessful.

I think for some reason it really really did not like using replace based on count values. I just couldnt get it to work in the end.
I ended up giving up and saw most everyone using newstring += ')', which I was going to do but I was too stubborn because I wanted to use the K,V in dictionary. I think I overthought this one :(

ah, the true answer

This one was a little bit frusterating. Eventually got it