Got it, thanks!

If it ever is, then yes. But it looks like it was unpublished at some point.

After it will be published, I can submit it?

You cannot submit solutions to a draft. The kata is not published, and currently it does not accept solutions.

That's because this kata is a Draft, there is no Submit button in this state.

I have following issue: My code is executing properly, everything is working and correct, all green, but I can't see 'submit' button to submit my kata. Can you help me?

Trivial map/filter/reduce is not a novel kata idea.

added

.

I think you need to add test case when array doesnt have duplicates
Because this solution worked and its not really checking if array contains duplicates or not

if(arr.length === 0 || arr.length === 1) {
return false;
}
return true

Yeah this could do with some more random tests. Otherwise nice work, Think it should be an 8 though becasue of the ammount of help that you're giving the user.

Alright then, closing.

Also, because of the way the random arrays are build, all those tests expect true.

Running the user solution and the reference solution on different arguments ?!?

That's not the way to do it.