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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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Can't be changed.
Changed description to:
"Words will contain of maximum 10 distinct letters, but word can be any length, even longer than 10 characters long."
"Words will contain of maximum 10 distinct letters, but word can be longer than 10 characters long."
It doesn't say here will be no empty strings...
I believe, as programmer, you always should think about the edge cases. Plus this case is easy to spot. Compare to some chalanges I did on this site I give away way to much information.
You should fix the sample test with Java, it's actually broken and it doesn't compile at all.
I agree, even in C++ and PHP this is far too simple for a 6th kyu kata
Nice Kata, did it in Java, took a little more than half an hour. I'd suggest you to specify in the instructions that the input string can be an empty string
Thumbs up for the Kata
What a nice solution, chapeau
This comment is hidden because it contains spoiler information about the solution
Not proud of it, but it works. Any feedback is welcome