Cody

# Problem 2235. Back to basics - mean of corner elements of a matrix

Solution 1997666

Submitted on 31 Oct 2019
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### Test Suite

Test Status Code Input and Output
1   Fail
x = [1 2 3; 4 5 6; 7 8 9] y_correct = 5; assert(isequal(MeanCorner(x),y_correct))

x = 1 2 3 4 5 6 7 8 9

Error using horzcat Dimensions of arrays being concatenated are not consistent. Error in MeanCorner (line 5) a=[x(1),x(size(x,1)),x(:,size(x,2),1),x(end)] Error in Test1 (line 3) assert(isequal(MeanCorner(x),y_correct))

2   Fail
x = magic(4) y_correct = 8.5; assert(isequal(MeanCorner(x),y_correct))

x = 16 2 3 13 5 11 10 8 9 7 6 12 4 14 15 1

Error using horzcat Dimensions of arrays being concatenated are not consistent. Error in MeanCorner (line 5) a=[x(1),x(size(x,1)),x(:,size(x,2),1),x(end)] Error in Test2 (line 3) assert(isequal(MeanCorner(x),y_correct))

3   Fail
x = eye(4) y_correct = 0.5; assert(isequal(MeanCorner(x),y_correct))

x = 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1

Error using horzcat Dimensions of arrays being concatenated are not consistent. Error in MeanCorner (line 5) a=[x(1),x(size(x,1)),x(:,size(x,2),1),x(end)] Error in Test3 (line 3) assert(isequal(MeanCorner(x),y_correct))

4   Fail
x = repmat(5, 4,4); y_correct = 5; assert(isequal(MeanCorner(x),y_correct))

Error using horzcat Dimensions of arrays being concatenated are not consistent. Error in MeanCorner (line 5) a=[x(1),x(size(x,1)),x(:,size(x,2),1),x(end)] Error in Test4 (line 3) assert(isequal(MeanCorner(x),y_correct))

5   Pass
x = [1:10]; y_correct = 5.5; assert(isequal(MeanCorner(x),y_correct))

y = 5.5000