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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.
Hi. A problem with your code is not a kata issue. You'd rather post a question if you want help.
Hopefully this can help you: Troubleshooting Your Solution.
Recursive fib is a bad idea for large numbers
Any other way will be better.
Take time for your fib with n = 500.
Any way that actually passes is a better way.
Please read this: https://github.com/codewars/codewars.com/wiki/Troubleshooting-your-solution#how-do-i-post-to-a-kata-discourse
Practically any solution with complexity of O(n) instead of yours O(n^2) would be better.