wow! bravo

Js array split and join method both use for loops underneath the hood making your solution have a time complexity of O(n + m) but solving in string without converting to array the for loop runs only once and gives a better solutions with O(n) time complexity.

wow! impressive

you made it look so easy

after solving each kata, click on attempt button on bottom right corner of your screen.
if your solution passes all the test cases, the submit button automatically appears.

this is so funny

clever!!
bravo (:

this solution is kinda cool (: