Read the description carefully, specifically this part: If a = 0 or b = 0, return [a,b]. Otherwise, go to step (ii);

4 years late but thank you, thought I was missing something...

Fixed some time ago

I would argue the description is fine. Since it was "less than half is okay." That's all I'm gonna say. Okay.

the test is "1.2.3.4 ". Notice the rear space: that is invalid

Check out this paragraph of FAQ: https://github.com/codewars/codewars.com/wiki/Troubleshooting-your-solution#when-i-print-my-answer-it-looks-exactly-the-same-as-the-expected-output-yet-tests-fail

Yes.

The invalid one isn't "1.2.3.4". Read the posts below, it's been already asked and answered before.

@TomDaNub sorry but I don't follow you there,

I assumed that there should be at least 2 elements in sub-arrays.

you should get the sum of maximum 2 continuos numbers

"At least" and "maximum" sounds like two different things.

@Chrono79, This isn't what he asked. He said that he thought you should get the sum of maximum 2 continuos numbers (and not any length of them).

It's already in the initial code:

/*
the table "nums" contains an integer "n", the number
return your result in a column "res"
*/

Fixed

Last line of kata description:

Note that the empty list or array is also a valid sublist/subarray.

If empty is valid, why wouldn't a single element be valid?

True !
I did not know why my Attempt was failing.
I assumed that there should be at least 2 elements in sub-arrays.

As a beginner, this is frustating

Please update description and mention that "Sub-arrays can hold only 1 element"