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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.
fixed it
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For the markdown part, it's backticks you nee to use ( ` ) not single quotes ( ' ).
toLowerCasereturns a string, and does not mutate it.If the problem is in your code, as the amount of solutions in java may suggest (Java Completions 4597), then it's not a kata issue.
Use Question next time, post your code using proper markdown and mark your post as having spoiler content.
Not a kata issue.