1. This solution is much faster on re-invocation than the one without the persistent num_ones variable. Unless of course it is performed on a much larger (than num_ones) array of 32-bit integer.
2. It is essential to have the statement
The reason for this is that the floor() function has a problem with precision. If can fail with 32-bit integer that are close to 2^32.
For instance, consider this Matlab code and system response:
Is my wife right? Now with even more wrong husband
Program an exclusive OR operation with logical operators
Valid Chess Moves
Return unique values without sorting
Piecewise linear interpolation
Slitherlink V: Assert/Evolve/Check (large)
Kaggle: Reverse Game of Life - Periods of Oscillators
USC Spring 2013 ACM: Walking on Thin Ice
Vectorize the digits of an Integer
Path Optimization thru N words : Time Optimization
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