Thanks! Fixed this

So the Node and BST definitions are in both the initial solution and also preloaded. Is this not the right way to load code?

Could someone explain how this works?

Should specify whether the numbers are integers or not.

description really unclear. incomplete description - indicates that there's clarification to follow with the word "i.e." but doesnt follow up.

No examples are given though the description suggests that there was an intention to do so.

[ 'b', 'c', 'd', 'e' ] 1
Expected: ["a"], instead got: ["b"]

this is an incorrect test case. please fix this - there is no "a" in the given array.

How many users are there in total? On the leaderboard it only displays the top 100. I'd like to see how well I'm doing in comparison with the total community.

For anyone confused by this see the following: http://stackoverflow.com/questions/18221963/javascript-function-fails-to-return-object-when-there-is-a-line-break-between-th

This question needs to be revised with more details and tons more test cases. I believe the author wants an actual use of closure, but the answer can be provided without the use of a closure.

This is best practice due to _ naming convention usage.

please incorporate a testcase for case insensitivity