Additional test cases have been added.
The title and description/instruction should refer to finding and outputting "means" (plural), not "the mean" (singular). Also, it would have been good for the Test Suite to include both row and column vectors, appropriately paired.
Convert a vector into a number
Given a matrix, swap the 2nd & 3rd columns
Find Out sum of principal diagonal element of given matrix
Rotate Matrix @180 degree
Sum two matrices
Matrix Generation from Vector Multiplication
Matrix element wise multiplication
Replace 0 indices in array with 1's
Find the index of the lowest number in a matrix
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