Cody

# Problem 2178. Matrix multiplication across rows

Solution 1765076

Submitted on 28 Mar 2019 by Abdelfatah Teamah
• Size: 7
• This is the leading solution.
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### Test Suite

Test Status Code Input and Output
1   Pass
x =[ 1 2 3; 4 5 6; 7 8 9]; y_correct = [1 2 6;4 20 120; 7 56 504]; assert(isequal(MatMultiply(x),y_correct))

[Warning: Function assert has the same name as a MATLAB builtin. We suggest you rename the function to avoid a potential name conflict.] [> In unix (line 32) In MatMultiply (line 2) In ScoringEngineTestPoint1 (line 3) In solutionTest (line 3)]

2   Pass
x =reshape([1:10], 2,5); y_correct = [ 1 3 15 105 945; 2 8 48 384 3840;]; assert(isequal(MatMultiply(x),y_correct))

[Warning: Function assert has the same name as a MATLAB builtin. We suggest you rename the function to avoid a potential name conflict.] [> In unix (line 32) In MatMultiply (line 2) In ScoringEngineTestPoint2 (line 4) In solutionTest (line 5)]

3   Pass
x =eye(5); y_correct = [ 1 0 0 0 0; 0 0 0 0 0; 0 0 0 0 0; 0 0 0 0 0; 0 0 0 0 0;]; assert(isequal(MatMultiply(x),y_correct))

[Warning: Function assert has the same name as a MATLAB builtin. We suggest you rename the function to avoid a potential name conflict.] [> In unix (line 32) In MatMultiply (line 2) In ScoringEngineTestPoint3 (line 7) In solutionTest (line 7)]

4   Pass
x =ones(7); y_correct = ones(7); assert(isequal(MatMultiply(x),y_correct))

[Warning: Function assert has the same name as a MATLAB builtin. We suggest you rename the function to avoid a potential name conflict.] [> In unix (line 32) In MatMultiply (line 2) In ScoringEngineTestPoint4 (line 3) In solutionTest (line 9)]