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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.
what if we have two numbers with the same length but a < b. For example 13 and 25. the output will be 251325, but 132513 is needed