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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.
Learn data structures such as: LinkedList, Stack, Queue, Binary Search Tree, Hash Map, etc. Once you really understands those data structures, you will find the most efficient way to solve the problems.
Solving them is easy, solving them efficiently is harder.
Practice and practice! :D After completing a kata, try to learn from other solutions and try again by refactoring your code.
Capitalize the first letters of all words.
lol so do i, but always remember, if it's stupid but it works , it's not stupid :)