Problem 1704. Triangular matrices in 3D array

Created by Matthew Eicholtz

Solve Later

{"relationships":[{"relationshipType":"http://schemas.mathworks.com/matlab/code/2013/relationships/document","targetMode":"","relationshipId":"rId1","target":"/matlab/document.xml"},{"relationshipType":"http://schemas.mathworks.com/matlab/code/2013/relationships/output","targetMode":"","relationshipId":"rId2","target":"/matlab/output.xml"}],"parts":[{"partUri":"/matlab/document.xml","relationship":[],"contentType":"application/vnd.mathworks.matlab.code.document+xml","content":"<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<w:document xmlns:w=\"http://schemas.openxmlformats.org/wordprocessingml/2006/main\"><w:body><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>Given a 3D numeric array</w:t></w:r><w:r><w:t> </w:t></w:r><w:r><w:rPr><w:i/></w:rPr><w:t>x</w:t></w:r><w:r><w:t>, return an array</w:t></w:r><w:r><w:t> </w:t></w:r><w:r><w:rPr><w:i/></w:rPr><w:t>y</w:t></w:r><w:r><w:t> of the same size in which all entries to the right of the main diagonal are zero for</w:t></w:r><w:r><w:t> </w:t></w:r><w:r><w:rPr><w:i/></w:rPr><w:t>y</w:t></w:r><w:r><w:t>(:,:,i).</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:rPr><w:b/></w:rPr><w:t>Example</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>If</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"code\"/></w:pPr><w:r><w:t><![CDATA[x(:,:,1) = 1 2 3\n           4 5 6\n           7 8 9\n\nx(:,:,2) = 1 4 7\n           2 5 8\n           3 6 9\n\nx(:,:,3) = 1 2 3\n           1 2 3\n           1 2 3]]></w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>then</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"code\"/></w:pPr><w:r><w:t><![CDATA[y(:,:,1) = 1 0 0\n           4 5 0\n           7 8 9\n\ny(:,:,2) = 1 0 0\n           2 5 0\n           3 6 9\n\ny(:,:,3) = 1 0 0\n           1 2 0\n           1 2 3]]></w:t></w:r></w:p></w:body></w:document>"},{"partUri":"/matlab/output.xml","contentType":"text/xml","content":"<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"no\" ?><embeddedOutputs><metaData><evaluationState>manual</evaluationState><layoutState>code</layoutState><outputStatus>ready</outputStatus></metaData><outputArray type=\"array\"/><regionArray type=\"array\"/></embeddedOutputs>"}]}

Solve

Solution Stats

143 Solutions
73 Solvers

Last Solution submitted on Jul 27, 2021

Last 200 Solutions

Problem Comments

Problem Recent Solvers73

Problem Tags

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Problem 1704. Triangular matrices in 3D array

Solution Stats

Last 200 Solutions

Problem Comments

Problem Recent Solvers73

Suggested Problems

More from this Author44

Problem Tags

Community Treasure Hunt

Problem 1704. Triangular matrices in 3D array

Solution Stats

Last 200 Solutions

Problem Comments

Problem Recent Solvers73

Suggested Problems

More from this Author44

Problem Tags

Community Treasure Hunt

Players