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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.
This should be the top best practice
Wow! Didn't know this formula.
It's super fast compared to other solutions)
I think you meant, branchless
nice
This is constant time, fastest solution.
For me this is the best solution to this problem. I would only get rid of the square brakets as they aren't necessary.
To keep it one-lined, I could have written a recursive function to divide by 2 and count the remainders, but was it really necessary ;)?
If that so the author should've written tests for that.
+1, simple math :P
it's fast! however, according to the description: "...you have to do it without string operation..." lol