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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.
Sure.
Looks very compact but won't be compiled when there are multiple values with the same type.
Oh, its true. I need to sleep.
Thanks!
Not a kata issue:
The only valid solution of yours is the Solution 3, that's the same as the example.
This comment is hidden because it contains spoiler information about the solution