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.
There might be a problem with the kata. I failed some of the random tests.
So I attempted my code multiple times without changing anything. The fifth attempt was a success...
I can't find any obvious mistake in my solution, so I'm not sure if there is a bug in the random testing.