Need a test case with a 0 on the chosen diagonal.
Agree with Jon's comment that the matrix should contain 0 elements
so simple that it never occurred to me
Determine if input is odd
Check to see if a Sudoku Puzzle is Solved
letter yes yes & letter no no
Generate a random matrix A of (1,-1)
Permute diagonal and antidiagonal
How to reverse spdiags ?
Find Missing Number
Magic is simple (for beginners)
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