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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.
A lot of time i don't understand, why my loop is doesn't work. But solution for this task so so simple. My regards to author.
Oh on second time i did it.
I have no idea why this works. My math is subpar, so I can't really explain, but it this is definitely way above my level.