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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.
Fixed example call left in sample tests and made some existing test cases random by shuffling the result itinerary.
I could not find any duplicate by title/tags, I could have missed some Kata which involes the same algorithm using concepts different from flights/itineraries.
Added a test case which covers two possible solutions and extended description to indicate that for those cases any of them is valid.
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