Problem 2837. Modify subscripts

Created by Jan Orwat

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>MATLAB supports object-oriented programming. Let's take an advantage of it in cody.</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>This problem starts</w:t></w:r><w:r><w:t> </w:t></w:r><w:hyperlink w:docLocation=\"http://uk.mathworks.com/matlabcentral/cody/problems/2836-class-ics-modify-subscripts-easy\"><w:r><w:t>here</w:t></w:r></w:hyperlink><w:r><w:t>.</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>Let's take things a bit more seriously. There are</w:t></w:r><w:r><w:t> </w:t></w:r><w:r><w:rPr><w:i/></w:rPr><w:t>subsasgn</w:t></w:r><w:r><w:t> and</w:t></w:r><w:r><w:t> </w:t></w:r><w:r><w:rPr><w:i/></w:rPr><w:t>subsref</w:t></w:r><w:r><w:t> to overload:</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"code\"/></w:pPr><w:r><w:t><![CDATA[>> A = sub_double([ 1 4 7\n 2 5 8\n 3 6 9]);\n>> A([1 3],[3 1])\n\nans = \n\n 3x3 sub_double:\n\n double data: \n 7 3\n\n>> A([1 2 3],[3 2 1]) = 0\n\nA = \n\n 3x3 sub_double:\n\n double data:\n 1 2 0\n 4 0 6\n 0 8 9\n\n>> A(:)'\n\nans = \n\n 1x9 sub_double:\n\n double data:\n 1 4 0 2 0 8 0 6 9\n\n>> A(:,:)\n\nans = \n\n 1x3 sub_double:\n\n double data:\n 1 0 9]]></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>"}]}

MATLAB supports object-oriented programming. Let's take an advantage of it in cody.This problem starts <a href = "http://uk.mathworks.com/matlabcentral/cody/problems/2836-class-ics-modify-subscripts-easy">here</a>.Let's take things a bit more seriously. There are subsasgn and subsref to overload:<pre class="language-matlab">&gt;&gt; A = sub_double([ 1 4 7
 2 5 8
 3 6 9]);
&gt;&gt; A([1 3],[3 1])
</pre><pre class="language-matlab">ans = 
</pre><pre> 3x3 sub_double:</pre><pre> double data: 
 7 3</pre><pre class="language-matlab">&gt;&gt; A([1 2 3],[3 2 1]) = 0
</pre><pre class="language-matlab">A = 
</pre><pre> 3x3 sub_double:</pre><pre> double data:
 1 2 0
 4 0 6
 0 8 9</pre><pre class="language-matlab">&gt;&gt; A(:)'
</pre><pre class="language-matlab">ans = 
</pre><pre> 1x9 sub_double:</pre><pre> double data:
 1 4 0 2 0 8 0 6 9</pre><pre class="language-matlab">&gt;&gt; A(:,:)
</pre><pre class="language-matlab">ans = 
</pre><pre> 1x3 sub_double:</pre><pre> double data:
 1 0 9</pre>

Solve

Solution Stats

12 Solutions
8 Solvers

Last Solution submitted on Dec 04, 2022

Last 200 Solutions

Problem Comments

Solution Comments

Show comments

Problem Recent Solvers8

Problem Tags

Community Treasure Hunt

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

Start Hunting!

Problem 2837. Modify subscripts

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers8

Suggested Problems

More from this Author40

Problem Tags

Community Treasure Hunt

Problem 2837. Modify subscripts

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers8

Suggested Problems

More from this Author40

Problem Tags

Community Treasure Hunt

Players