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

Solution 1041183

Submitted on 1 Nov 2016 by Rodney Tan

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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))
2	Pass	x = magic(10); y_correct = 505; assert(isequal(sum_of_sec_diag(x),y_correct))
3	Pass	x = magic(11); y_correct = 671; assert(isequal(sum_of_sec_diag(x),y_correct))
4	Pass	x=[1 2 3; 4 4 6; 2 8 9]; y_correct = 9; assert(isequal(sum_of_sec_diag(x),y_correct))