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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 is a 6000ms time limit for the tests in order to test performance.
While your code works for smaller numbers like 5 & 10, it is probably too ineffecient for larger numbers.
In ruby for example, n may be as high as
10**8.You need to think of a faster way to solve the problem.