do not use the issue tag to ask for help. your code does not work for a single, non-iterable argument, you return the arguments object in that case.

OP solved it, closing

At index 20 there is a plateau-peak.

Half a day on this? How did you even get to level 3kyu?? 😁

the last '\n' at the end

expected '-25,21,2,-33,48\n30,31,-32,33,-34\n' // <- this is your answer, see the \n at the end
to equal '-25,21,2,-33,48\n30,31,-32,33,-34'

See the example in the description again, there is no \n at the end. I've added a value to the tests to avoid error messages being truncated.

Because your code is throwing a string instead of an error. Google a little or search MDN docs.

You're not failing a random test, you're failing a fixed one, in particular:

strng = "12341234", arr = [ 'DIeF', 'IeFD', '12341234', '41234123', '34123412', '23412341' ]

Every rotation exists in arr, but your code returns false. There are some logical flaws in the way you're counting stuff. You should focus more on rotations of strng itself, not just arr,

please format it in a proper way so that other people will look at the code...

broken ass kata. dont worry ab it

You need to figure out the pattern to decode the messages. For example, '8 5 12 12 15' should be decoded as 'Hello'. The pattern used is 'A': 1, 'B': 2, 'C': 3, ..., 'Z': 26."

This means that your code is too long. Note that this kata is a code golf kata, which means that it has a limit of code length:

Lastly, this is code golf, so your solution has to be less than 71 characters.

deeply equal means it should not change the original array or in tech terms not a shallow copy