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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.
Nice one. I would change a few bits to make it more readable (and fix one problem: you can return a pair of primes where the second one is out of the specified range i.e. your test does not pass this test: assertEquals("null", Arrays.toString(GapInPrimes.gap(2, 2, 3)));) but the overall result is really neat.
there seems to be a strange test. I'm getting the error "expected:<-44> but was:<1>" for this iput: "2 ,6 ,8 ,10 ,3 ,2 ,6 ,8 ,200 ,700 ,1 ,84 ,10 ,4 ,17 ,6 ,8 ,10 ,6 ,12 ,24 ,36 ,2 ,1 ,7 ,17 ,19 ,211 ,7 ,1 ,1 ,1 ,1 ,1 ,44 ,7 ,7 ,7 ,7 ,7 ,7 ,7 ,7 ,3 ,3 ,3 ,3 ,3 ,3 ,3 ,3 ,3 ,3 ,3 ,3 ,3 ,3 ,35 ,5 ,5 ,5 ,5 ,5 ,5 ,5 ,5 ,5 ,5 ,7 ,7 ,7 ,7 ,1000 ,2 ,-6 ,8 ,-10 ,-3 ,2 ,6 ,8 ,2 ,-66 ,34 ,-35 ,66 ,700 ,1002 ,-84 ,10 ,4 ,-2147483647 ,-18 ,6 ,-8 ,-10 ,6 ,12 ,-24 ,36 ,-20 ,1 ,7 ,17 ,19 ,211 ,7 ,1 ,1 ,-1 ,1 ,1 ,-44 ,7 ,7 ,7 ,7 ,7 ,7 ,7 ,7"
This input does not comply with the exercise description...