Covering some basic topics I haven't seen elsewhere on Cody.
Given an input vector, output true or false whether it is a column vector.
The if statement did not work for x =1.
Their is a function for this already.
I guess this exercise is about learning that this function exists.
Make a checkerboard matrix
Return a list sorted by number of occurrences
Implement a ROT13 cipher
Getting the indices from a vector
Convert Hard Drive marketing sizes to actual data sizes
Back to basics 25 - Valid variable names
Back to basics 1 - Saving
Back to basics 22 - Rotate a matrix
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