Cody

# Problem 2587. Find indices of diagonal elements

Solution 1462974

Submitted on 14 Mar 2018 by Emmanuel Afolabi
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### Test Suite

Test Status Code Input and Output
1   Pass
x = [1 2 3;4 5 6;7 8 9]; a = [1 5 9]; assert(isequal(diag_indices(x,0),a))

a = [] m = 1 a = 1 m = 2 a = 1 5 m = 3 a = 1 5 9 m = 4 y = 1 5 9

2   Pass
x = magic(5); b = 5; assert(isequal(diag_indices(x,-4),b))

a = [] m = 1 a = 5 m = 2 y = 5

3   Pass
x = magic(5); a = 21; assert(isequal(diag_indices(x,4),a))

a = [] m = 1 a = 21 m = 2 y = 21

4   Pass
x = magic(5); z = 5; assert(isequal(diag_indices(x,-4),z))

a = [] m = 1 a = 5 m = 2 y = 5

5   Pass
x = magic(6); a = [19 26 33]; assert(isequal(diag_indices(x,3),a))

a = [] m = 1 a = 19 m = 2 a = 19 26 m = 3 a = 19 26 33 m = 4 y = 19 26 33

6   Pass
x1 = magic(50); y_correct = 50; assert(isequal(diag_indices(x1,-49),y_correct))

a = [] m = 1 a = 50 m = 2 y = 50

7   Pass
x2 = magic(50); y_correct = [49 100]; assert(isequal(diag_indices(x2,-48),y_correct))

a = [] m = 1 a = 49 m = 2 a = 49 100 m = 3 y = 49 100

8   Pass
y = magic(50); v = [48 99 150]; assert(isequal(diag_indices(y,-47),v))

a = [] m = 1 a = 48 m = 2 a = 48 99 m = 3 a = 48 99 150 m = 4 y = 48 99 150

9   Pass
v=[1 2 3;4 5 6;1 2 3]; t = [1 5 9]; assert(isequal(diag_indices(v,0),t))

a = [] m = 1 a = 1 m = 2 a = 1 5 m = 3 a = 1 5 9 m = 4 y = 1 5 9

10   Pass
x=[1 2;1 2]; y_correct = 3; assert(isequal(diag_indices(x,1),y_correct))

a = [] m = 1 a = 3 m = 2 y = 3

11   Pass
x=[1 1 1;1 1 1;1 1 1]; t = [1 5 9]; assert(isequal(diag_indices(x,0),t))

a = [] m = 1 a = 1 m = 2 a = 1 5 m = 3 a = 1 5 9 m = 4 y = 1 5 9

12   Pass
y=[1 2 3;1 2 3]; y_correct = [1 4]; assert(isequal(diag_indices(y,0),y_correct))

a = [] m = 1 a = 1 m = 2 a = 1 4 m = 3 y = 1 4

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