Some Cody problems ask solvers to remove columns (e.g., CP 7), and others ask solvers to remove rows (e.g., CP 44033).
Write a function to remove the main diagonal of a square matrix. For example, if the original matrix is
[1 6 11 16 21
2 7 12 17 22
3 8 13 18 23
4 9 14 19 24
5 10 15 20 25]
the resulting matrix would be
[6 11 16 21
2 12 17 22
3 8 18 23
4 9 14 24
5 10 15 20]
Elegance encouraged and appreciated.
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Chris -- I think the last element in the example result should be 20 rather than 25.
Yes, of course. Thanks.