yeaaa this is like 6 / 7 kyu at most.

The kyu rankings on this site are a very rough guide. It seems that people on this site are pretty terrible at ranking Kata consistently. I agree that this deserves a much higher ranking than a mere 7 kyu.

If you want to solve this Kata, you need to know some specifics on type coercion and lexographic sorting in JavaScript. I hope that helps.

Hand name could be translated as "Nine Gates" rather than "Win for 9 pieces".

Add the Nine Gates hand ("1112345678999" => "123456789") to the sample test cases.

Come on, it's too iconic to omit.

The function base itself f=s=> is 5 characters. So you only have 4 characters to check if a variable is uppercase or lowercase.

The best I can come up with is 5 characters... just one short.

I need a hint :( and yea this is rated 7 kyu for some reason

Why not just check all lowercase and all uppercase letters?

You could do that, and then also add random tests on top.

same, and i think we have the exact same code

O(1) is necessary

Uh... huh???

same

basically my solution

Yeah, i think that make a sence

here the method is used ... no, I will not tell you the encryption method)

that reads weirdly. a bit.

maybe something like this instead:

the encryption method used is... lol jk im not telling you

for input :
: expected false to equal true

Very helpful.