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.
A trailing newline is expected but was not mentioned at all.
Every random test expects the same 20 floor house with 20 windows and a door.
This comment is hidden because it contains spoiler information about the solution
Counting elements in a collection is a duplicate.
The current "random" test isn't random at all, it's just enumerating the input range of
([50-60],[50-60]).