SOLUTION: how can we find the diagonal elements of square matrix?

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Question 1028417: how can we find the diagonal elements of square matrix?
Answer by fractalier(6550) About Me  (Show Source):
You can put this solution on YOUR website!
You start at the top left and move diagonally toward the bottom right, reading off the elements as you go. So for a matrix like
1 2 3
4 5 6
7 8 9
our diagonal elements are 1,5, and 9.