Cody

# Problem 972. Set a diagonal

Solution 154314

Submitted on 26 Oct 2012
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### Test Suite

Test Status Code Input and Output
1   Pass
%% M = 1; v = 7; d = 0; M2 = 7; assert(isequal(setDiagonal(M,v,d),M2)); assert(isequal(setDiagonal(M,v),M2));

``` tf = 1 loc = 1 M = 7 d = 0 tf = 1 loc = 1 M = 7 ```

2   Pass
%% M = magic(5); v = 1:3; d = 2; M2 = M; M2([11,17,23]) = v; assert(isequal(setDiagonal(M,v,d),M2));

``` tf = 1 1 1 loc = 11 17 23 M = 17 24 1 8 15 23 5 7 2 16 4 6 13 20 3 10 12 19 21 3 11 18 25 2 9 ```

3   Pass
%% M = rand(6); v = [.2 -.2]; d = -4; M2 = M; M2([5,12]) = v; assert(isequal(setDiagonal(M,v,d),M2));

``` tf = 1 1 loc = 5 12 M = 0.9436 0.6718 0.8444 0.3868 0.7702 0.7218 0.6377 0.6951 0.3445 0.9160 0.3225 0.4735 0.9577 0.0680 0.7805 0.0012 0.7847 0.1527 0.2407 0.2548 0.6753 0.4624 0.4714 0.3411 0.2000 0.2240 0.0067 0.4243 0.0358 0.6074 0.2891 -0.2000 0.6022 0.4609 0.1759 0.1917 ```

4   Pass
%% M = zeros(99); v = ones(1,99); d = 0; M2 = eye(99); assert(isequal(setDiagonal(M,v),M2)); assert(isequal(setDiagonal(M,v,d),M2));

``` d = 0 tf = Columns 1 through 16 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Columns 17 through 32 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Columns 33 through 48 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Columns 49 through 64 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Columns 65 through 80 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Columns 81 through 96 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Columns 97 through 99 1 1 1 loc = Columns 1 through 8 9801 9801 9801 9801 9801 9801 9801 9801 Columns 9 through 16 9801 9801 9801 9801 9801 9801 9801 9801 Columns 17 through 24 9801 9801 9801 9801 9801 9801 9801 9801 Columns 25 through 32 9801 9801 9801 9801 9801 9801 9801 9801 Columns 33 through 40 9801 9801 9801 9801 9801 9801 9801 9801 Columns 41 through 48 9801 9801 9801 9801 9801 9801 9801 9801 Columns 49 through 56 9801 9801 9801 9801 9801 9801 9801 9801 Columns 57 through 64 9801 9801 9801 9801 9801 9801 9801 9801 Columns 65 through 72 9801 9801 9801 9801 9801 9801 9801 9801 Columns 73 through 80 9801 9801 9801 9801 9801 9801 9801 9801 Columns 81 through 88 9801 9801 9801 9801 9801 9801 9801 9801 Columns 89 through 96 9801 9801 9801 9801 9801 9801 9801 9801 Columns 97 through 99 9801 9801 9801 M = Columns 1 through 16 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ...```

5   Fail
%% M = zeros(3); v = -1:1; d = 0; M2 = diag(v); assert(isequal(setDiagonal(M,v),M2)); assert(isequal(setDiagonal(M,v,d),M2));

```Error: Assertion failed. ```