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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.
Your solution is not accounting for an edge case that is present in the random tests, but not in the sample tests.
(Of course, it's been 14 months since you posted, so it's also possible there was a problem that has been fixed; but it hasn't been marked resolved.)
the random tests are weird. how does this make sense?
[(-98, -21), (-20, 50), (56, 83)] should equal [(-98, 100)]
It failed me for 59 cases like this