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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.
Your solution incorrectly handles some edge cases, replace your prints with:
Console.WriteLine($"Input:[{input}]");I agree the output is confusing tho, I will close this issue as user error and raise a new one about improving messages.
Can you show your code?
Remember about code formatting and spoiler flag please.
What language?