Good kata with some logic and interesting stuff, hope this kata will be approved :D

Yes you did, a and cages are both references to the same list.

Thank you. I can add that the part of the challenge is to recognize problem (so you did). In my kata another task: don’t need permutate array - result is different. And yes, chickens are funnier!

While I appreciate the addition of the ASCII art and the description, I can't see this as much different than https://www.codewars.com/kata/5550d638a99ddb113e0000a2

Ok, this thing is 1-based.

How is this possible?

should return [13]
Log
([1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13], 1, 1)
[0] should equal [13]

• No random tests.
• Returning multiple types is bad practice.
• Input validation without a real task is a duplicate of many (bad) kata.

Adding a bunch of bad requirements to the "Multiply" kata doesn't make for good content.