if you're going to post trivial problems that have already been posted before, at least use a proper test suite.
and this one does not even require a solution
Remove all the consonants
First non-zero element in each column
Create a vector whose elements depend on the previous element
Find nearest prime number less than input number
Create an anti-identity matrix
Matlab Basics II - Extract last 3 elements of a vector
Matlab Basics II - 3 Dimensional Arrays
Matlab Basics II - Max & Index of Max
Matlab Basics II - Velocity of a particle
Replace every 3rd element in a vector with 4
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