Are you an Android developer who's curious about getting started with the NDK? Or maybe you'd just like to see what C/C++ can do as opposed to Java. Or maybe... there's another reason. I dunno. What I do know, however, is that Packt Publishing's Android Native Development Kit Cookbook ($25/$50) probably has the answer you're looking for.
This contest is now over.
The final results are listed below. If you've won, you will be contacted in the near future.