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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.
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Do all blobs make their moves before the state of the board (who fuses) is evaluated or is the state checked after each blob move? I'm getting mixed results with both methods.
Modified the description to specify the initial set conversion.
As Chrono79 mentioned:
If the passed integer is already a single digit there is no need to reduce
@agkg is correct and it likely passed after getting no empty-set random tests.
Added a test case to ensure
set()
gets returned at least once.Thanks, done.