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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.
Please don't post solutions (even incorrect ones) in the discourse without the
spoilertag.Your solution describes a roundabout way to return
n, i.e. the input itself, without doing any calculations pertaining to triangular numbers.This comment is hidden because it contains spoiler information about the solution