Those cases are already excluded with the assumption in the description:

You can assume the given code is syntactically valid, i.e. it only consists of numbers and it exactly has a length of 13 characters.

Also, even if someone would try adding those test cases, it would invalidate the majority of the current ~2800 solutions, so I (not the author but a mender) don't think it would be worth it, honestly...

You can add test case:

• when length of line less 13
• when length of line greate 13
• when line not only digit

Thank's for your task

done

Merged a fork resolving this issue

I should have known that a function like that already exists...

Wut? It does return an array of int.

So what? This solution does exactly that.

No random tests in Java

there is a problem when the table is null.

• Only 1 fixed test.
• Missing random tests.

Rejected

Of course, this is all good, but we need to return a regular array of integers.

merged