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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.
Look at my suggestion above. they're asking for the highest sequence of five numbers, not for you to re-arrange it and find the highest numbers within the argument.
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i've got the same test output!but don't know why