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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.
I'd consider early return for
if v2 >= v1
condition.Not very complex computing is happening here but still better to skip computing whe it is not necessary;)