You use length to index, that is how I did it since I figured it would be faster than back

easier

How do you obtain the last formula? I was traing to do something like that but i couldn't, feeding all the fishes of the same size in one round was really clever, good job man!

Floating point representation problem? It should pass.

This solution does not pass for 9.

i like how you used both indexes and functions :)

Well, this is a common trick (but how you could not come up with a one line solution when you have the more powerful eval)
Nvm, once you see it, you cannot forget it o_O

Nice!

Really smart using the global object. I could not think of a solution to one line this kata.

Thanks mate :D

Nice! :D

No clue what you did there, but I like it

Regrettably, I have to concur: where is the downvote button when you really need it :(?