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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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Nice. I didn't realize you could decompose strings like that.
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Take 2 strings s1 and s2 including only letters from a to z.Checking all the time for each 'kata' is not the point of the katas (I think).
If you do, you will spend half the time on the site checking for proper inputs.
After reviewing the task description, I understand your concerns, but please note that the first line of the task clearly states: "Take 2 strings s1 and s2 including only letters from a to z". Therefore, we can assume that the input will only contain lowercase letters from 'a' to 'z' and we do not need to check for other characters.
i think this not correct.. you dont check for a-z only charac
ters.
so if i pass s1="as!!" and s2="er^" it wont detect the special chars.