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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.
It can be, but plenty of compilers will optimize a divide-by-two into a shift anyway. (Specifically any divide-by-power-of-two can be turned into a single shift)
The usual wording in math problems like this would be "non-negative". The description could either make an exception for
0, or just change "positive" to "non-negative" and give a clear example.NASM Translation