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
Back to basics 22 - Rotate a matrix
Flip the main diagonal of a matrix
Binary code (array)
Add more zeros
Find Missing Number
Rank of magic square (for beginners)
How many monitors are connected ?
Replicate elements in vectors
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