{"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":43071,"title":"How do you make seven even?","description":"Take away the s.","description_html":"\u003cp\u003eTake away the s.\u003c/p\u003e","function_template":"function S = even(s)\r\n  S = s;\r\nend","test_suite":"%%\r\ns = 1;\r\ny_correct = 6;\r\nassert(isequal(even(s),y_correct))\r\n\r\ns = -1;\r\ny_correct = 8;\r\nassert(isequal(even(s),y_correct))","published":true,"deleted":false,"likes_count":1,"comments_count":0,"created_by":57323,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":75,"test_suite_updated_at":null,"rescore_all_solutions":false,"group_id":1,"created_at":"2016-10-05T17:54:10.000Z","updated_at":"2026-02-10T13:46:54.000Z","published_at":"2016-10-05T17:54:10.000Z","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\u003eTake away the s.\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\"}]}"},{"id":157,"title":"The Hitchhiker's Guide to MATLAB","description":"Output logical \"true\" if the input is the answer to life, the universe and everything. Otherwise, output logical \"false\".","description_html":"\u003cp\u003eOutput logical \"true\" if the input is the answer to life, the universe and everything. Otherwise, output logical \"false\".\u003c/p\u003e","function_template":"function y = zaphod(x)\r\n  y = false\r\nend","test_suite":"%%\r\nx = 41;\r\ny_correct = false;\r\nassert(isequal(zaphod(x),y_correct))\r\n%%\r\nx = 42;\r\ny_correct = true;\r\nassert(isequal(zaphod(x),y_correct))\r\n%%\r\nx = 43;\r\ny_correct = false;\r\nassert(isequal(zaphod(x),y_correct))%%\r\nx = 44;\r\ny_correct = false;\r\nassert(isequal(zaphod(x),y_correct))%%\r\nx = 45;\r\ny_correct = false;\r\nassert(isequal(zaphod(x),y_correct))%%\r\nx = 46;\r\ny_correct = false;\r\nassert(isequal(zaphod(x),y_correct))%%\r\nx = 47;\r\ny_correct = false;\r\nassert(isequal(zaphod(x),y_correct))\r\n%%\r\nx = 48;\r\ny_correct = false;\r\nassert(isequal(zaphod(x),y_correct))\r\n%%\r\nx = 49;\r\ny_correct = false;\r\nassert(isequal(zaphod(x),y_correct))\r\n%%\r\nx = 50;\r\ny_correct = false;\r\nassert(isequal(zaphod(x),y_correct))","published":true,"deleted":false,"likes_count":54,"comments_count":18,"created_by":39,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":3414,"test_suite_updated_at":"2012-01-29T03:52:07.000Z","rescore_all_solutions":false,"group_id":1,"created_at":"2012-01-29T03:52:07.000Z","updated_at":"2026-05-28T13:51:07.000Z","published_at":"2012-01-29T03:53:05.000Z","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\u003eOutput logical \\\"true\\\" if the input is the answer to life, the universe and everything. Otherwise, output logical \\\"false\\\".\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":43071,"title":"How do you make seven even?","description":"Take away the s.","description_html":"\u003cp\u003eTake away the s.\u003c/p\u003e","function_template":"function S = even(s)\r\n  S = s;\r\nend","test_suite":"%%\r\ns = 1;\r\ny_correct = 6;\r\nassert(isequal(even(s),y_correct))\r\n\r\ns = -1;\r\ny_correct = 8;\r\nassert(isequal(even(s),y_correct))","published":true,"deleted":false,"likes_count":1,"comments_count":0,"created_by":57323,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":75,"test_suite_updated_at":null,"rescore_all_solutions":false,"group_id":1,"created_at":"2016-10-05T17:54:10.000Z","updated_at":"2026-02-10T13:46:54.000Z","published_at":"2016-10-05T17:54:10.000Z","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\u003eTake away the s.\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\"}]}"},{"id":157,"title":"The Hitchhiker's Guide to MATLAB","description":"Output logical \"true\" if the input is the answer to life, the universe and everything. Otherwise, output logical \"false\".","description_html":"\u003cp\u003eOutput logical \"true\" if the input is the answer to life, the universe and everything. Otherwise, output logical \"false\".\u003c/p\u003e","function_template":"function y = zaphod(x)\r\n  y = false\r\nend","test_suite":"%%\r\nx = 41;\r\ny_correct = false;\r\nassert(isequal(zaphod(x),y_correct))\r\n%%\r\nx = 42;\r\ny_correct = true;\r\nassert(isequal(zaphod(x),y_correct))\r\n%%\r\nx = 43;\r\ny_correct = false;\r\nassert(isequal(zaphod(x),y_correct))%%\r\nx = 44;\r\ny_correct = false;\r\nassert(isequal(zaphod(x),y_correct))%%\r\nx = 45;\r\ny_correct = false;\r\nassert(isequal(zaphod(x),y_correct))%%\r\nx = 46;\r\ny_correct = false;\r\nassert(isequal(zaphod(x),y_correct))%%\r\nx = 47;\r\ny_correct = false;\r\nassert(isequal(zaphod(x),y_correct))\r\n%%\r\nx = 48;\r\ny_correct = false;\r\nassert(isequal(zaphod(x),y_correct))\r\n%%\r\nx = 49;\r\ny_correct = false;\r\nassert(isequal(zaphod(x),y_correct))\r\n%%\r\nx = 50;\r\ny_correct = false;\r\nassert(isequal(zaphod(x),y_correct))","published":true,"deleted":false,"likes_count":54,"comments_count":18,"created_by":39,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":3414,"test_suite_updated_at":"2012-01-29T03:52:07.000Z","rescore_all_solutions":false,"group_id":1,"created_at":"2012-01-29T03:52:07.000Z","updated_at":"2026-05-28T13:51:07.000Z","published_at":"2012-01-29T03:53:05.000Z","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\u003eOutput logical \\\"true\\\" if the input is the answer to life, the universe and everything. Otherwise, output logical \\\"false\\\".\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":"The Movies","count":1,"selected":false}],[{"value":"easy","count":2,"selected":false}]],"term":"tag:\"Joke\"","page":1,"per_page":50,"sort":"map(difficulty_value,0,0,999) asc"}}