needs more test cases, I was able to pass by returning manually counted number of expected islands

I had a go at it (a very very long one). I was forced to get help from a java-oriented solution using something called Depth-first-search. today is a very sad day for me :(

I think 6kyu is just about right

id rate this a 7kyu

@Eluderei he obviously knew that but didn't know what to map to.

Nope, sorry.
Nope, sorry.
Nope, sorry.
Nope, sorry.
Nope, sorry.
Nope, sorry.
Nope, sorry.
Nope, sorry.

var player1 = [[7,5],[6,8],[6,9],[1,1],[9,4],[2,2],[6,6],[10,5],[6,4],[4,5],[10,3],[3,1],[10,9],[8,3],[3,8]]
var player2 = [[8,10],[9,6]]
Expected: {"player1":[[6,9],[1,1],[9,4],[2,2],[6,6],[10,5],[6,4],[4,5],[10,3],[3,1],[10,9],[8,3],[3,8]],"player2":[]},
instead got: {"player1":[[6,9],[1,1],[9,4],[2,2],[6,6],[10,5],[6,4],[4,5],[10,3],[3,1],[10,9],[8,3],[3,8]],"player2":[[8,10]]}

am I missing something? player2's [8,10] should survive right?

youre expected to optimize your code so that all the tests pass.

I have two versions that dont pass so I'm trying to improve them

issue or not, the wording about where e and f come from is confusing.

LMFAO WELL DONE

to pass the performance test am I restricted to ES6 ?

im guessing this solution was made before the test inputs were changed from array to string

oh my god why didnt I do this

Just one tiny issue in the description:

"If the string is smaller than two characters and longer than 100 characters.."

needs to be

"If the string is smaller than two characters OR longer than 100 characters.."

they mean entirely different things

how is 'X' mark on the 8 index of string equal to [0,0] ?? makes no sense

edit: ok i found that maps can come in any irregular shapes and sizes

nice kata.