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.
This comment is hidden because it contains spoiler information about the solution
Thanks for a great kata! Actually it would be better, then autor add one more test case with number 9. You can check my old solution and it passed with a bug. So, please add test case only with 9.
Oops! It looks like you found a mistake. Thanks! It's strange, that all tests passed... I will reupload my solution.