Not sure where the 'vectorization' is coming from for this problem.
Back to basics 22 - Rotate a matrix
matrix of natural number
Flip the vector from right to left
Remove from a 2-D matrix all the rows that contain at least one element less than or equal to 4
Duplicate each element of a vector.
First non-zero element in each column
Matrix which contains the values of an other matrix A at the given locations.
Find the elements of a matrix according to a defined property.
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