You missed the "non-negative integers" requirement.

Good thing about this solution: Super super beginner friendly answer using an essential loop statement

Damn

good job

argh, I forgot about the + on regExp, I just used a filter to remove the extra spaces xd

"Yay, finally i found a single line regex magicfuckery solution like others too!!". compares with other solutions Oh... Well, anyways.

Mine was so complicated simply because i replaced every single WUB with 1 space, ending up with so 3-4 spaces on recurring WUBs. So I had to handle that.

All i needed was a single "+" on my regex, that's pretty smart. Slowly learning regex, it's fascinating.

(+) operator doing that job
eg:"WUBWUBWUBWUB".replace(/(WUB)/g) is equal to " " so in this case we get four empty spaces. because it replace every WUB into empty string tha't why we are using + symbol it means it check minimum one 'WUB' matches.
eg1:"WUB".replace(/(WUB)+/g) is equal to " ",
eg2:"WUBWUB".replace(/(WUB)+/g) is equal to " ",
eg3:"WUBWUBWUBWUB".replace(/(WUB)+/g) is equal to " ".in this case there are fout 'WUB' substrings are here so it replace that string into one empty string

How does this code remove the multiple spaces? I can only understand how it replaces the WUBs with a space each time, not how it accounts for the potential multiple spaces

^ CORRECTIONS AND TO BE MORE SPECIFIC:
The + means to match whatever is infront of it 1 or more times**

Then you have the astric * (which is not included but important to differentiate from the plus) it matches whatever is infront of it from 0 or more times.

And finally g the global tells regex to not stop after the first match but continue and look for more matches

This was a great exercise to start to really dip my toes into regex and play around with some stuff. I am glad I got the same result here!

man thats very clever, gg

I'm curious on all these .repalce() answers does the .trim() have to loop over the string a second time? I wonder if there is a way to get it in one pass?

Nice, very short code.
But, it works!

i dont even know why i cant think like this lol