thx

Sorry but, what makes the control if the number it's already negative? Thanks.

just the zen of python ;)
but the point I was focusing is the build-in filter

Enveloping a function into a class for no particular reason sure makes a lot of sense ;)

none of you read the title!
where is that filter???
checkout my solution!

this solution does also use a foor-loop

Doesn't this return " " instead of "" for an empty string? I thought I tried this code and it errored ...

Edit: I just tried it out and it didn't error. Never Mind. I guess it doesn't join on an empty string ("") because there is nothing to join.

I like the simplicity of this one. Thanks!

nice way to keep it simple and understandable

well it took me quite long to do it and while checking others solution,it looks like how easy it was but wasn't for me and now it is.

personally I allways prefer braces. Makes arguments for methods much more readable.

хьай де дакъ

#THIEVES118

this function, although returns a string output, there is still spaces at the begining and of the string.

For some reason, I thought the toString() method was necessary at the end of this one.