JavaScript

In what language?

Kata needs some random cases. I have written a weird logic and it is able to clear all test cases. However, when I assert my own random test, the code fails. Coincidence, probably. But thats why I think it needs some random cases.

Can anyone explain to me why the second loop annihilates the input board arrays, even though i am giving square a copy of it using board.splice()?

Not only you

I was confused on this as I am also used to applying list functions on strings so assumed nesting could be done in both arrays and strings. Thank you for this clarification :3

does [[]] has the same nesting structure as [""] or no?

Obviously no, 2 arrays (1 nested, nested is the keyword here) in the first one, only 1 in the other.

Also another question is does [[]] has the same nesting structure as [""] or no? if yes can u further nest in strings or is this only possible with lists?

... its argument is an array that has the same nesting structures and same corresponding length of nested arrays as the first array.

It doesn't say anything about the data type.

My solution is not very elegant but it works good enough. Very fun kata regardless