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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.
Gret one! Hard and satisfying. Took me hours. Trying to explain the algorithm is a least as difficult as finding it :p
I think it's not working. Some unsorted array will be considered as descending.
What about [3,5,2] ?