Name:Tom
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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.
Nice. I believe guards
x < 10andx > 10can be merged intootherwise.I should have definitely skip
length lsince the lazy list is only evaluated till the element needed.This comment is hidden because it contains spoiler information about the solution