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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.
There are no errors in the tests. You have to solve kind of equation, not inequation.
In Java, my code passes all the basic tests but it fails on some random tests. For instance I'm wondering how checkchoose(716, 13) = -1 if C(13, 5) = 1287 is greater than 716? Shouldn't it be the case that checkchoose(716, 13) = 5? It could be that I'm missing something quite subtle. Additionally I'm uncertain as to how checkchoose(286097761, 34) = -1 if C(34, 12) = 548354040 is greater than 286097761?