improve test suit
This solution only works for vectors that are already sorted from low to high :) but it passed the test suite
This works in R2012b, but not on cody
function ans = duplicate(x)
Rotate input square matrix 90 degrees CCW without rot90
Derivative of polynomial
Create incrementing array
Narcissistic number ?
A quadrant matrix
vectorization in N
First non-zero element in each column
Remove from a 2-D matrix all the rows that contain at least one element less than or equal to 4
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