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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.
Recently went through a course in algorithms and data structures. The course provided the knowledge I needed to solved this kata. Really fun and great kata, more katas like this!
Fun kata, but took me longer time then necessary. Somehow unit did not allow me to have the source list as a reference in front and back. for example, if source = [1] -> [2] -> None, and front = [1] -> None, and back = [2] -> None. It complained about front not being 1. Had to made a tmpFront which pointed to the same references of source, then copy them to front with new nodes which felt like.... Anyhow, great kata!