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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.
if n is very big, the list will use a lot of memory.
if BigInterger n is bigger than 0x7fff_ffff, n.intValue() will overflow.
if BigInterger n is bigger than 0x7fff_ffff, n.intValue() will overflow.