Loading collection data...
Collections are a way for you to organize kata so that you can create your own training routines. Every collection you create is public and automatically sharable with other warriors. After you have added a few kata to a collection you and others can train on the kata contained within the collection.
Get started now by creating a new collection.
You didn't generate an array the size of the input number, right?
The number can go as high as 10^9 or above, which will eat up all the memory instantly if you do this.
Not sure what you mean. There's an "Attempt" button, right? That stuff is part of Codewars itself, so I'm not sure I can help if that's missing...
I had the same issue. I just had to refresh/start over and it worked. Don't forget to copy/paste your code elsewhere before ;).