so beautiful!

clean, but the intital split/filter repetition seems a bit high in performance cost and very reduceable.

20 lines? 🙂

Very nice approach, one downside is that the function modifies the input array parameter so it would be better to start by making a local copy to manipulate.

i did some crazy batsh*t to pass lol. wayyy behind this solution
but i feel that reading this makes me more aware of array methods for future katas!

Pretty clean, love it

wow I feel so far from coming up with something like this

length of each element in the 2D array must equals length of 2D array itself. Is in the kata description

Or you could just use a.localeCompare(b) instead of trying to find the index. Misread that.

I'd say the best say is

[...'abcdefghijklmnopqrstuvwxyz']

This solution don't work with this data
snail([[1,2,3,4], [16,17,18,5], [15,24,19,6], [14,23,20,7], [13,22,21,8], [12,11,10,9]])