raise Exception works.

In JS, it should be throw new Error("error message")

OP solved it though, closing.

JS Translation added

updated description

Good kata, but the task description could mean too many different things. What's really bad is that both "smallest" and "largest" are used, but they are to be considered in a different context:

• "smallest" palindrome within a given division
• "largest" (of the aforementioned "smallest" palindromes) across all posssible divisions

Your task is to shuffle and divide this line into the lowest number palindromes so that the length of the smallest palindrome is the largest.

It would be much better to pick one of the examples in the description, and show us the different divisions, the "smallest" palindrome in each division, and the "largest" of those "smallest" ones.

I'm logging this as issue, as time and again users have complained about this in the comments and I feel the description is still below par.

I feel your pain.

Had the same problem.
The add, subtract and dot methods must raise errors.
The equals method must return only true or false even if the vectors have different sizes.

Cool and original!

raise exception is works

Nice!

I have the same question (in Python). I raised an exception and it ends up being uncaught which causes the tests to exit with error code 1, so they fail even though all the tests show passed. It looks like many people have completed this kata though so maybe we're missing something obvious. Though I think the instructions should be more clear about precisely what "throw an error" means.

No, you don't always pick the highest number, otherwise you might end up on side with lower numbers and won't be able to reach bigger numbers later on.

I think you should to add negative numbers to random tests