Additional test cases have been added.
First non-zero element in each column
Back to basics 21 - Matrix replicating
Create an index-powered vector
y equals x divided by 2
Back to Basics - Find no. of elements in a matrix?
String Delimination and Outputting
Automatic String Editing
Find the mean of two vectors
Matrix element wise multiplication
Replace 0 indices in array with 1's
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