did you find invite link?

@chadluo, it's great, that you showed where have you taken your factor function.
I have the same situation. My solution did't pass time conditions.

Once more time thanks for honesty!

Use spoiler flag next time, please.

Details on this can be found on docs: https://docs.python.org/3/library/string.html#format-specification-mini-language

Is it possible to do an explanation for dummies (like me), how does your return string works?

Thank you for comment.

Thank you for comments.

+Chrono79
I've been trying Console.WriteLine("test");
But that only works in the sample tests and only when there's no timeout.
It doesn't work when I call it in the actual code.

Use Console.WriteLine (variable); for C#

Why then we have such a codestring in a sample test: "Assert.AreEqual(2, Kata.GetLengthOfMissingArray(new object[][] { new object[] { null }, new object[] { null, null, null } } ));"?
Are not we should expect 0 here?
I don't get it. Please help.
Only problem I got is NullReference exeption in Kata Assertion.

In JavaScript, console.log() works. Not sure about other languages, give printf() or whatever a try.

Try this: https://www.codewars.com/kata/554e4a2f232cdd87d9000038/discuss#591964acd2563abec90000c7

What about "DNA strand is never empty or there is no DNA at all" check?