Given vector x, calculate the alternating sum
y = x(1) - x(2) + x(3) - x(4) + ...
Most nonzero elements in row
Back to basics 8 - Matrix Diagonals
Getting the row and column location from a matrix
Sum the elements in either diagonal of a square matrix
Is this is a Tic Tac Toe X Win?
Mean ignoring NaNs
James Bond film count
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