Basically the same as Problem 1158
only the odds.
Works for current test suite, but not in general.
Try adding an even sized matrix (magic(6), for instance) to the test suite. If the two diagonals don't share any points, a lot of these solutions won't work.
First time I see this notation.
subtract central cross
The sum of the numbers in the vector
Let's get back to school: create mixed numbered fraction
Back to basics - array operations
Return the names and values of the input arguments of a function
Matrix multiplication across rows
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