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Problem 459. Sum of diagonal of a square matrix

Solution 1986106

Submitted on 22 Oct 2019 by Ngo Minh Ngoc
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Test Suite

Test Status Code Input and Output
1   Pass
x = magic(4); y_correct = sum(diag(x)); assert(isequal(your_fcn_name(x),y_correct))

a = 4 m = 136 x = 0 2 3 13 5 11 10 8 9 7 6 12 4 14 15 1 x = 0 2 3 13 5 0 10 8 9 7 6 12 4 14 15 1 x = 0 2 3 13 5 0 10 8 9 7 0 12 4 14 15 1 x = 0 2 3 13 5 0 10 8 9 7 0 12 4 14 15 0 n = 102 y = 34
2   Pass
x = ones(5); y_correct = sum(diag(x)); assert(isequal(your_fcn_name(x),y_correct))

a = 5 m = 25 x = 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 x = 0 1 1 1 1 1 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 x = 0 1 1 1 1 1 0 1 1 1 1 1 0 1 1 1 1 1 1 1 1 1 1 1 1 x = 0 1 1 1 1 1 0 1 1 1 1 1 0 1 1 1 1 1 0 1 1 1 1 1 1 x = 0 1 1 1 1 1 0 1 1 1 1 1 0 1 1 1 1 1 0 1 1 1 1 1 0 n = 20 y = 5

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