perfect

Amazing!!

Great workings!

there are many ways to slove this without regex

Where's conditions of these task.Or all conditions of these task is inside of reduce() method ?

nice one i also used the same method...

So simple, I managed to figure out that a regex would work but the experience really plays a role here, great job. Teahcing us all a lot.

can anyone explain me, why it was not necessary using the += signal. Instead of that, you used only the plus signal.

reduce method is worth learning at any level, very useful for problems like this.

I think it's simple!

this is beginner...

So you can tell the program when you want to exit the function and get the value you're looking for.

Beginner here. Could someone explain why the return key word is being used here? Thanks.