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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.
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moOse is the only string with 1 matching upper and lowercase letter--you have to disregard case.
the test string was mo0se, not moOse... try it again using copy/pasta
I tried running the code with same test input in my own complier seems working fine, however when i tried to run it here it always haas an error with moOse, something is wrong with the codewar's compiler.