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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.
great and original solution
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{1,1,2} should return 2 but this code will return 1
Leaving comments in non-english lanugage is far from best practices
Nice.
I think the answer of the second one is 24 , there is no problem. I just don't understand the third one.
I think the answer of it is 1, how can it be 2 ? system A : 10 dollars System B: 0 + 10 * 0.95 = 9.5 dollars