Given a matrix, return the sum of all the elements across the diagonals.
E.g. A = [1 2 3;
4 5 6;
7 8 9;]
sum = 25 as sum of (1, 3, 7, 9,5)
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.
Remove the polynomials that have positive real elements of their roots.
Project Euler: Problem 6, Natural numbers, squares and sums.
Back to basics 7 - Equal NaNs
sum of non-primes
Back to Basics - Find no. of elements in a matrix?
Back to basics - mean of corner elements of a matrix
Find supported functions
Find my birthday
Create a v-notch vector without "sort" function
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