{"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":43025,"title":"Check if a directory is on the current MATLAB search path","description":"Given a directory name as a string, return true if the directory is on the current MATLAB search path, and false otherwise.","description_html":"\u003cp\u003eGiven a directory name as a string, return true if the directory is on the current MATLAB search path, and false otherwise.\u003c/p\u003e","function_template":"function tf = isonpath(str)\r\n    tf = 0;\r\nend","test_suite":"%%\r\nstr = '/opt/mlsedu/matlab/R2016b/toolbox/matlab/mss/mlt_rmt_tmw/scoring-engine';\r\nassert(isequal(isonpath(str),true))\r\n\r\n%%\r\nstr = '/opt/mlsedu/matlab/R2016b/toolbox/matlab/testframework/parallel';\r\nassert(isequal(isonpath(str),true))\r\n\r\n%%\r\nstr = '/opt/mlsedu/matlab/R2016b/toolbox/shared/imageslib';\r\nassert(isequal(isonpath(str),true))\r\n\r\n%%\r\nstr = '/opt/mlsedu/matlab/R2016b/help/toolbox/vision/examples';\r\nassert(isequal(isonpath(str),true))\r\n\r\n%%\r\nstr = '/opt/mlsedu/matlab/R2016b/toolbox/shared/bigdata';\r\nassert(isequal(isonpath(str),true))\r\n\r\n%%\r\nstr = '/opt/mlsedu/matlab/R2016b/toolbox/matlab/demos';\r\nassert(isequal(isonpath(str),true))\r\n\r\n%%\r\nstr = '/opt/mlsedu/matlab/R2016b/toolbox/matlab/funfun';\r\nassert(isequal(isonpath(str),true))\r\n\r\n%%\r\nstr = '/opt/mlsedu/matlab/R2016b/toolbox/matlab/system';\r\nassert(isequal(isonpath(str),true))\r\n\r\n%%\r\nstr = '/opt/mlsedu/matlab/R2016b/toolbox/shared/simulink';\r\nassert(isequal(isonpath(str),true))\r\n\r\n%%\r\nstr = '';\r\nassert(isequal(isonpath(str),false))\r\n\r\n%%\r\nstr = '/opt/';\r\nassert(isequal(isonpath(str),false))\r\n\r\n%%\r\nstr = 'matlab';\r\nassert(isequal(isonpath(str),false))\r\n\r\n%%\r\nstr = '/matlab/R2016b/toolbox';\r\nassert(isequal(isonpath(str),false))\r\n\r\n%%\r\nstr = 'not a directory';\r\nassert(isequal(isonpath(str),false))\r\n\r\n%%\r\nstr = '/opt/mlsedu/matlab/R2016b/toolbox/matlab/timefun/fakedirectory';\r\nassert(isequal(isonpath(str),false))\r\n\r\n%%\r\nstr = 'blah/blah/blah';\r\nassert(isequal(isonpath(str),false))\r\n\r\n%%\r\nstr = 'C:\\Program Files\\MATLAB\\R2016a\\toolbox\\matlab\\datafun';\r\nassert(isequal(isonpath(str),false))\r\n\r\n%%\r\nstr = [];\r\nassert(isequal(isonpath(str),false))\r\n\r\n","published":true,"deleted":false,"likes_count":1,"comments_count":3,"created_by":4793,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":19,"test_suite_updated_at":null,"rescore_all_solutions":false,"group_id":1,"created_at":"2016-10-04T20:08:03.000Z","updated_at":"2026-05-28T16:04:44.000Z","published_at":"2016-10-04T20:08:03.000Z","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\",\"relationshipId\":\"rId1\",\"target\":\"/matlab/document.xml\"},{\"relationshipType\":\"http://schemas.mathworks.com/matlab/code/2013/relationships/output\",\"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\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\u003eGiven a directory name as a string, return true if the directory is on the current MATLAB search path, and false otherwise.\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":43025,"title":"Check if a directory is on the current MATLAB search path","description":"Given a directory name as a string, return true if the directory is on the current MATLAB search path, and false otherwise.","description_html":"\u003cp\u003eGiven a directory name as a string, return true if the directory is on the current MATLAB search path, and false otherwise.\u003c/p\u003e","function_template":"function tf = isonpath(str)\r\n    tf = 0;\r\nend","test_suite":"%%\r\nstr = '/opt/mlsedu/matlab/R2016b/toolbox/matlab/mss/mlt_rmt_tmw/scoring-engine';\r\nassert(isequal(isonpath(str),true))\r\n\r\n%%\r\nstr = '/opt/mlsedu/matlab/R2016b/toolbox/matlab/testframework/parallel';\r\nassert(isequal(isonpath(str),true))\r\n\r\n%%\r\nstr = '/opt/mlsedu/matlab/R2016b/toolbox/shared/imageslib';\r\nassert(isequal(isonpath(str),true))\r\n\r\n%%\r\nstr = '/opt/mlsedu/matlab/R2016b/help/toolbox/vision/examples';\r\nassert(isequal(isonpath(str),true))\r\n\r\n%%\r\nstr = '/opt/mlsedu/matlab/R2016b/toolbox/shared/bigdata';\r\nassert(isequal(isonpath(str),true))\r\n\r\n%%\r\nstr = '/opt/mlsedu/matlab/R2016b/toolbox/matlab/demos';\r\nassert(isequal(isonpath(str),true))\r\n\r\n%%\r\nstr = '/opt/mlsedu/matlab/R2016b/toolbox/matlab/funfun';\r\nassert(isequal(isonpath(str),true))\r\n\r\n%%\r\nstr = '/opt/mlsedu/matlab/R2016b/toolbox/matlab/system';\r\nassert(isequal(isonpath(str),true))\r\n\r\n%%\r\nstr = '/opt/mlsedu/matlab/R2016b/toolbox/shared/simulink';\r\nassert(isequal(isonpath(str),true))\r\n\r\n%%\r\nstr = '';\r\nassert(isequal(isonpath(str),false))\r\n\r\n%%\r\nstr = '/opt/';\r\nassert(isequal(isonpath(str),false))\r\n\r\n%%\r\nstr = 'matlab';\r\nassert(isequal(isonpath(str),false))\r\n\r\n%%\r\nstr = '/matlab/R2016b/toolbox';\r\nassert(isequal(isonpath(str),false))\r\n\r\n%%\r\nstr = 'not a directory';\r\nassert(isequal(isonpath(str),false))\r\n\r\n%%\r\nstr = '/opt/mlsedu/matlab/R2016b/toolbox/matlab/timefun/fakedirectory';\r\nassert(isequal(isonpath(str),false))\r\n\r\n%%\r\nstr = 'blah/blah/blah';\r\nassert(isequal(isonpath(str),false))\r\n\r\n%%\r\nstr = 'C:\\Program Files\\MATLAB\\R2016a\\toolbox\\matlab\\datafun';\r\nassert(isequal(isonpath(str),false))\r\n\r\n%%\r\nstr = [];\r\nassert(isequal(isonpath(str),false))\r\n\r\n","published":true,"deleted":false,"likes_count":1,"comments_count":3,"created_by":4793,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":19,"test_suite_updated_at":null,"rescore_all_solutions":false,"group_id":1,"created_at":"2016-10-04T20:08:03.000Z","updated_at":"2026-05-28T16:04:44.000Z","published_at":"2016-10-04T20:08:03.000Z","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\",\"relationshipId\":\"rId1\",\"target\":\"/matlab/document.xml\"},{\"relationshipType\":\"http://schemas.mathworks.com/matlab/code/2013/relationships/output\",\"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\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\u003eGiven a directory name as a string, return true if the directory is on the current MATLAB search path, and false otherwise.\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:\"matlabpath\"","page":1,"per_page":50,"sort":"map(difficulty_value,0,0,999) asc"}}