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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.
Be prepared for precision problems for very large
Number
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checking for both negative and positive is not necessary.
Using set is not necessary.
Oh dear lord, this is why I wish we could edit our answers XD. No need for the replace. So stupid!!
Was supposed to be count+=self.items_per_page in the page_list function. Though after seeing other solutions this one is pretty bad I guess.
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