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:
Finding Perfect Squares
Which values occur exactly three times?
Construct an index vector from two input vectors in vectorized fashion
Determine if input is a Narcissistic number
matrix of natural number
GJam 2014 China Rd A: Maze with a Left Hand Rule
Cody Matlab Version
LASER Tracker - Mirror Distance and Angle
Kryptos - CIA Cypher Sculpture: Vigenere Encryption
Molecule Atomic Wt (CHONS) Molecules
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