dont need sortFunc

Is function sortFunc(a,b) {return a-b;} needed here?

I mean, it does not matter how we sort the arrays as long as we sort them both the same way.

still you dont know what words will somebody put to smashed :) mby smashed is " hello', 'world', 'this', 'is', 'great ' so....... Be careful, there shouldn't be a space at the beginning or the end of the sentence! ;)

i think the increment could be i+=3 instead of i++
so u can simplify the ret calculation into
ret += 1f/i
xD

This assumes the elements are numbers.

This is probably my fave approach to this. Very simple and straightforward!

Yes it does. I did the same to mine.

I am new to this syntax. What is does the .filter do and what does v => mean?

Clever but not best performant.