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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.
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congrats on the wife
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Hi saddy,
You only need 1 method to complete this kata, so just delete the entire output method. Implement a for loop to iterate over the initial string input and keep a variable to keep track of the last character read from the string. Your unique_in_order should return the list.
Good luck!