Loading collection data...
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.
Lmao what?
This comment is hidden because it contains spoiler information about the solution
Yeah, you're right. At some point this kumite changed into testing whether or not the number is even.
As for the power_of_two, I think that the first solution was the best one:
return n & ( n - 1 ) == 0