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.
Hint: Take a look at the expected output of the sample tests. There is a consistent part of the answer that will help you know when you have the output it expects.
Is anyone else hitting a wall of frustration with the execution time? I've built a python function that passes all tests but runs out of execution time once it reaches the second 10,000 item list. I've optimized it within my abilities and it completes a 100,000 item list in 765ms on my local system but still hits the wall when running through the site's test list.