same problem...
/e
solved it!
thanks for test cases :)

I don't get the logic of third test. Why [-1] instead of [-1,0]?

Different stack sizes?

I have the same issue, how you solve?

My test cases work, I'm even using the input from the first input the attempt tries - and the only thing I'm getting back is "the method gave a wrong answer".
I realize this is 5 kyu, but that kind of error is not helpful, especially since I know the function works everywhere else.

I'm able to clone the object, but it's not passing all the tests. Perhaps I'm missing something.

what to do in case of invalid argument(s)?

It's not very clear what you want us to do when no arguments are passed. The examples given are only for valid inputs.

I'm sorry, is this some sort of inside joke?

Thank you sir, I shall give it another go, hopefully with better results!

When I run this on my own compiler, it's fine, if I run it on the site it says 'maximum call stack size exceeded'. I'm using recursion, but why would I be getting different results?

I keep getting "The array's first value should begin with start (-1 in this case)", but I've been able to test it with -1 as the first value, and really any other value thus far.