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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.
Were you able to figure out what exactly is the requirement of this question ?
Problem description is not so clear. Multipication table should be 1 2 2, 2 3 6, 3 6 18. If there is something else to achive should have more detail.
Great! One quick question, is there any processing benifits over string's slice or substring method?
clever use of scala