Cody

Problem 1042. Operate on matrices of unequal, yet similar, size

Solution 2215686

Submitted on 17 Apr 2020
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Test Suite

Test Status Code Input and Output
1   Pass
nocheat = isempty(regexp(evalc('type matched_op'),'([^f]eval|regexprep|inline|str2func)')); x = [1 2;3 4]; y = [1 2]; z_correct = [1 4;3 8]; assert(isequal(matched_op(x,y,'times'),z_correct) && nocheat)

op = function_handle with value: @times z = 1 4 3 8

2   Fail
nocheat = isempty(regexp(evalc('type matched_op'),'([^f]eval|regexprep|inline|str2func)')); x = [10i]; y = [20]; z_correct = [-2i]; assert(isequal(matched_op(x,y,'ldivide'),z_correct) && nocheat)

Matrix dimensions must agree. Error in matched_op (line 2) if op=='times' Error in Test2 (line 5) assert(isequal(matched_op(x,y,'ldivide'),z_correct) && nocheat)

3   Fail
nocheat = isempty(regexp(evalc('type matched_op'),'([^f]eval|regexprep|inline|str2func)')); x = reshape(1:4,[1 1 1 4]); y = (1:4).'; z_correct = reshape([2 3 4 5 3 4 5 6 4 5 6 7 5 6 7 8],[4 1 1 4]); assert(isequal(matched_op(x,y,'plus'),z_correct) && nocheat)

Matrix dimensions must agree. Error in matched_op (line 2) if op=='times' Error in Test3 (line 5) assert(isequal(matched_op(x,y,'plus'),z_correct) && nocheat)

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