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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.
Oh sorry, I believed only the largest numbers are available to remove.
I think, I found an error on C# tests. The array is [9, 13, 21, 1, 3, 5, 7], the smallest number is 1, all squares roots the other numbers are bigger than 1, except of course 1. Six numbers are required to be removed to achieve the goal, but the unit test shows that only 2 are needed. Is an error? or I am doing something wrong?
I think unit tests are wrong.
I think C# unit tests are wrong