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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.
https://www.codewars.com/kata/5988a7747a43212f2e000052
Have a try! :D
OK, I'll consider one soon.
Thank you for your suggestion.
(hint: this is an exercise problem for an ACM team, the complete solution is using Hash).
Fixed.
Wtf, I can't re-publish my changes.
You might wait for a while to see the bug fix.