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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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lol I dont get it too, this solution is not optimal. It is checking twice the same number
LOL, I just noticed the "don't use this" alias at the end.
Killer solution! Good job.
This solution should be rated higher.
Isn't this n^2 complexity. Why is it the best solution?
Learnt a new algorithm thanks to this question.
i thought it was a joke lol
Is using "group by and having" a good idea for this kata. Please check my solution and comment. Thanks!
Is using "group by" for the subquery a good practice ?
Clever simplication by extracting the quotient and remainder of 256 instead of 2. Good job!
Could someone explain what the purpose of line 2 is.
Could someone explain what the purpose of line 3 is.
Thanks! Was looking for this.
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