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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.
This might have been the intention behind this exercize though? Hard to say....
@naranjito72 not really. He could've generated it with a program because of how consistent the pattern is.
@92hussein - It's to count the "digits that occur more than once"
Sure is long, I do agree with you. But I have to give to the person that wrote the solution that is robust as hell.
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