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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.
you can name it as you want
actaully sqaure is the table name and it's must to be the same.
he just sort them from 0 to 9 and uses the input as index when you type 1 as input you will get the value at index one from the array