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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.
Thx g964, this was the missing piece of info for me. Next time I'll start with reading the discussions tab.
This kata is (at least in c#) useless. The random untittests are not consistent in their expectations. For example, given these lists (only string length shown), it expects to 7 as the answer while 11-2=9 is the max lenght difference. Anyone can explain the purpose?
a1: 2, 4, 5, 7, 7, 9, 11
a2: 6, 8, 8, 9, 9