This doesn't seem to be possible anymore: http://stackoverflow.com/questions/28722723/matlab-bsxfun-no-longer-faster-than-repmat. Any chance of updating the problem with looser time tolerances?
This problem is meanless!
The solutions passed are not always fast than repmat, or just cheat(ex. using "tic")
Implement a ROT13 cipher
How to find the position of an element in a vector without using the find function
Back to basics 14 - Keywords
Return unique values without sorting
How to add?
RISK board game battle simulation
It's race time! Write a faster function than the test suite call of unique().
Calculate the probability that at least two people in a group share the same birthday.
Determine the number of odd integers in a vector
Penny flipping - calculate winning probability (easy)
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