Find the sum of all the odd numbers in a matrix.
x = [2 3 5 7 1 4 11]
y = 27
Back to basics 8 - Matrix Diagonals
Back to basics 23 - Triangular matrix
Return elements unique to either input
Find the index of n in magic(n)
union without repitition
interesting center of magic matrix
most frequent character
index of n^2 in magic(n)
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