Problem 314. Find the sum of the elements in the "second" diagonal

Solution 901303

Submitted on 3 Jun 2016 by William Mitchell

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Test	Status	Code Input and Output
1	Pass	x = magic(6); y_correct = 111; assert(isequal(sum_of_sec_diag(x),y_correct)) y = 4 y = 40 y = 69 y = 82 y = 100 y = 111
2	Pass	x = magic(10); y_correct = 505; assert(isequal(sum_of_sec_diag(x),y_correct)) y = 11 y = 29 y = 129 y = 206 y = 290 y = 326 y = 369 y = 419 y = 446 y = 505
3	Pass	x = magic(11); y_correct = 671; assert(isequal(sum_of_sec_diag(x),y_correct)) y = 56 y = 125 y = 207 y = 302 y = 410 y = 531 y = 533 y = 548 y = 576 y = 617 y = 671
4	Pass	x=[1 2 3; 4 4 6; 2 8 9]; y_correct = 9; assert(isequal(sum_of_sec_diag(x),y_correct)) y = 2 y = 10 y = 19