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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.
the code and explanation is amazing
I've tested your solution and it passes at 7 seconds interval whilst mine passes at around 1.5 seconds. Not a kata issue, closing...
Today I learned, again and again
The ruby version is always return stack to deep when tried to process n=100000.
I have tried many versions of solution available on the internet but the result always same.
I am sure your are QA :D
mind blowing