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:
Remove the vowels
Convert hex color specification to MATLAB RGB
Rotate a Matrix
What's Your BMI?
Make a 1 hot vector
Unique: Speed Enhancement for uint(8,16,32)
Pandiagonal Prime Magic Square Verification
Mastermind III: Solve in 1
Unique: Faster 'rows' for large array of uint8
GJam 2014 China Rd B: Party
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