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:
Sum all integers from 1 to 2^n
Back to basics 21 - Matrix replicating
Find the elements of a matrix according to a defined property.
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Genome Sequence 001: Introductory DNA Sequencing
Create a Cell array of month-end date strings within a date range
Genome Sequence 003R: Sequence DNA of random positioned and flipped segments
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