{"group":{"id":1,"name":"Community","lockable":false,"created_at":"2012-01-18T18:02:15.000Z","updated_at":"2026-05-26T00:16:20.000Z","description":"Problems submitted by members of the MATLAB Central community.","is_default":true,"created_by":161519,"badge_id":null,"featured":false,"trending":false,"solution_count_in_trending_period":0,"trending_last_calculated":"2026-05-26T00:00:00.000Z","image_id":null,"published":true,"community_created":false,"status_id":2,"is_default_group_for_player":false,"deleted_by":null,"deleted_at":null,"restored_by":null,"restored_at":null,"description_opc":null,"description_html":null,"published_at":null},"problems":[{"id":42491,"title":"Quine  : write a quine in MATLAB","description":"Quine is a type of program whose output matches the source code.\r\nSee: \u003chttps://en.wikipedia.org/wiki/Quine_(computing) Quine in Wikipedia\u003e\r\n\r\nSimilar in spirit to, http://www.mathworks.com/matlabcentral/cody/problems/42461-this-is-a-palindrome-and-so-am-i\r\n\r\nNote: last line of MATLAB solution is padded with a comment, so you should remove that in your Quine submission","description_html":"\u003cp\u003eQuine is a type of program whose output matches the source code.\r\nSee: \u003ca href = \"https://en.wikipedia.org/wiki/Quine_(computing)\"\u003eQuine in Wikipedia\u003c/a\u003e\u003c/p\u003e\u003cp\u003eSimilar in spirit to, \u003ca href = \"http://www.mathworks.com/matlabcentral/cody/problems/42461-this-is-a-palindrome-and-so-am-i\"\u003ehttp://www.mathworks.com/matlabcentral/cody/problems/42461-this-is-a-palindrome-and-so-am-i\u003c/a\u003e\u003c/p\u003e\u003cp\u003eNote: last line of MATLAB solution is padded with a comment, so you should remove that in your Quine submission\u003c/p\u003e","function_template":"function data = quine(varargin)   \r\n   % Make me quiny, or else I''m whiny\r\n   data = sprintf('function data = quine(varargin)   ... ')\r\nend\r\n","test_suite":"%% Test for Quine \r\n\r\nnl = char(10);\r\ncontents = strsplit(fileread('quine.m'),nl);\r\nref_contents = [strjoin(contents(1:end-2),nl), nl];\r\nactual_contents=quine();\r\n\r\nassert( isequal(ref_contents,actual_contents) )\r\n","published":true,"deleted":false,"likes_count":3,"comments_count":0,"created_by":3378,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":14,"test_suite_updated_at":null,"rescore_all_solutions":false,"group_id":1,"created_at":"2015-08-05T20:29:05.000Z","updated_at":"2026-05-28T13:39:23.000Z","published_at":"2015-08-05T20:29:54.000Z","restored_at":null,"restored_by":null,"spam":false,"simulink":false,"admin_reviewed":false,"description_opc":"{\"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\":\"\u003c?xml version=\\\"1.0\\\" encoding=\\\"UTF-8\\\"?\u003e\\n\u003cw:document xmlns:w=\\\"http://schemas.openxmlformats.org/wordprocessingml/2006/main\\\"\u003e\u003cw:body\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eQuine is a type of program whose output matches the source code. See:\u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:t\u003e \u003c/w:t\u003e\u003c/w:r\u003e\u003cw:hyperlink w:docLocation=\\\"https://en.wikipedia.org/wiki/Quine_(computing)\\\"\u003e\u003cw:r\u003e\u003cw:t\u003eQuine in Wikipedia\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:hyperlink\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eSimilar in spirit to,\u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:t\u003e \u003c/w:t\u003e\u003c/w:r\u003e\u003cw:hyperlink w:docLocation=\\\"http://www.mathworks.com/matlabcentral/cody/problems/42461-this-is-a-palindrome-and-so-am-i\\\"\u003e\u003cw:r\u003e\u003cw:t\u003ehttp://www.mathworks.com/matlabcentral/cody/problems/42461-this-is-a-palindrome-and-so-am-i\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:hyperlink\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eNote: last line of MATLAB solution is padded with a comment, so you should remove that in your Quine submission\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003c/w:body\u003e\u003c/w:document\u003e\"},{\"partUri\":\"/matlab/output.xml\",\"contentType\":\"text/xml\",\"content\":\"\u003c?xml version=\\\"1.0\\\" encoding=\\\"UTF-8\\\" standalone=\\\"no\\\" ?\u003e\u003cembeddedOutputs\u003e\u003cmetaData\u003e\u003cevaluationState\u003emanual\u003c/evaluationState\u003e\u003clayoutState\u003ecode\u003c/layoutState\u003e\u003coutputStatus\u003eready\u003c/outputStatus\u003e\u003c/metaData\u003e\u003coutputArray type=\\\"array\\\"/\u003e\u003cregionArray type=\\\"array\\\"/\u003e\u003c/embeddedOutputs\u003e\"}]}"}],"problem_search":{"problems":[{"id":42491,"title":"Quine  : write a quine in MATLAB","description":"Quine is a type of program whose output matches the source code.\r\nSee: \u003chttps://en.wikipedia.org/wiki/Quine_(computing) Quine in Wikipedia\u003e\r\n\r\nSimilar in spirit to, http://www.mathworks.com/matlabcentral/cody/problems/42461-this-is-a-palindrome-and-so-am-i\r\n\r\nNote: last line of MATLAB solution is padded with a comment, so you should remove that in your Quine submission","description_html":"\u003cp\u003eQuine is a type of program whose output matches the source code.\r\nSee: \u003ca href = \"https://en.wikipedia.org/wiki/Quine_(computing)\"\u003eQuine in Wikipedia\u003c/a\u003e\u003c/p\u003e\u003cp\u003eSimilar in spirit to, \u003ca href = \"http://www.mathworks.com/matlabcentral/cody/problems/42461-this-is-a-palindrome-and-so-am-i\"\u003ehttp://www.mathworks.com/matlabcentral/cody/problems/42461-this-is-a-palindrome-and-so-am-i\u003c/a\u003e\u003c/p\u003e\u003cp\u003eNote: last line of MATLAB solution is padded with a comment, so you should remove that in your Quine submission\u003c/p\u003e","function_template":"function data = quine(varargin)   \r\n   % Make me quiny, or else I''m whiny\r\n   data = sprintf('function data = quine(varargin)   ... ')\r\nend\r\n","test_suite":"%% Test for Quine \r\n\r\nnl = char(10);\r\ncontents = strsplit(fileread('quine.m'),nl);\r\nref_contents = [strjoin(contents(1:end-2),nl), nl];\r\nactual_contents=quine();\r\n\r\nassert( isequal(ref_contents,actual_contents) )\r\n","published":true,"deleted":false,"likes_count":3,"comments_count":0,"created_by":3378,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":14,"test_suite_updated_at":null,"rescore_all_solutions":false,"group_id":1,"created_at":"2015-08-05T20:29:05.000Z","updated_at":"2026-05-28T13:39:23.000Z","published_at":"2015-08-05T20:29:54.000Z","restored_at":null,"restored_by":null,"spam":false,"simulink":false,"admin_reviewed":false,"description_opc":"{\"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\":\"\u003c?xml version=\\\"1.0\\\" encoding=\\\"UTF-8\\\"?\u003e\\n\u003cw:document xmlns:w=\\\"http://schemas.openxmlformats.org/wordprocessingml/2006/main\\\"\u003e\u003cw:body\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eQuine is a type of program whose output matches the source code. See:\u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:t\u003e \u003c/w:t\u003e\u003c/w:r\u003e\u003cw:hyperlink w:docLocation=\\\"https://en.wikipedia.org/wiki/Quine_(computing)\\\"\u003e\u003cw:r\u003e\u003cw:t\u003eQuine in Wikipedia\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:hyperlink\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eSimilar in spirit to,\u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:t\u003e \u003c/w:t\u003e\u003c/w:r\u003e\u003cw:hyperlink w:docLocation=\\\"http://www.mathworks.com/matlabcentral/cody/problems/42461-this-is-a-palindrome-and-so-am-i\\\"\u003e\u003cw:r\u003e\u003cw:t\u003ehttp://www.mathworks.com/matlabcentral/cody/problems/42461-this-is-a-palindrome-and-so-am-i\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:hyperlink\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eNote: last line of MATLAB solution is padded with a comment, so you should remove that in your Quine submission\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003c/w:body\u003e\u003c/w:document\u003e\"},{\"partUri\":\"/matlab/output.xml\",\"contentType\":\"text/xml\",\"content\":\"\u003c?xml version=\\\"1.0\\\" encoding=\\\"UTF-8\\\" standalone=\\\"no\\\" ?\u003e\u003cembeddedOutputs\u003e\u003cmetaData\u003e\u003cevaluationState\u003emanual\u003c/evaluationState\u003e\u003clayoutState\u003ecode\u003c/layoutState\u003e\u003coutputStatus\u003eready\u003c/outputStatus\u003e\u003c/metaData\u003e\u003coutputArray type=\\\"array\\\"/\u003e\u003cregionArray type=\\\"array\\\"/\u003e\u003c/embeddedOutputs\u003e\"}]}"}],"errors":[],"facets":[[],[{"value":"medium","count":1,"selected":false}]],"term":"tag:\"quine\"","page":1,"per_page":50,"sort":"map(difficulty_value,0,0,999) asc"}}