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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.
because he used 'i' and the first used 'x'
cheers
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of course.
first of all, why do you think top answer will not pass all cases? give a counter example...
second, this is a TERRIBLE solution with TERRIBLE complexity. the top answer will finish very large inputs in milliseconds while this might in minutes.
Don't be attracted to shiny / short solutions, it's fool's gold.