{"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":43076,"title":"Return strings encapsulated by braces","description":"Return all substrings that are contained within braces ({}).\r\n\r\nFor example:\r\n\r\n  str = 'x = rho*x{-1} + (1-rho)*y{+1}';\r\n\r\nwhen passed to the function, should return a cell with '-1' and '+1' as its contents.","description_html":"\u003cp\u003eReturn all substrings that are contained within braces ({}).\u003c/p\u003e\u003cp\u003eFor example:\u003c/p\u003e\u003cpre class=\"language-matlab\"\u003estr = 'x = rho*x{-1} + (1-rho)*y{+1}';\r\n\u003c/pre\u003e\u003cp\u003ewhen passed to the function, should return a cell with '-1' and '+1' as its contents.\u003c/p\u003e","function_template":"function y = parseBrackets(x)\r\n  y = x;\r\nend","test_suite":"%%\r\nstr = 'series{d-96}x11{second}';\r\ny_correct = {'d-96';'second'};\r\nassert(isempty(find(strcmp(parseBrackets(str),y_correct)==0)))\r\n\r\n%%\r\nstr = 'x=rho*x{-1}+(1-rho)*y{+1}';\r\ny_correct = {'-1';'+1'};\r\nassert(isempty(find(strcmp(parseBrackets(str),y_correct)==0)))\r\n\r\n%%\r\nstr = 'hello there; this string contains no braces';\r\ny_correct = {};\r\nassert(isempty(find(strcmp(parseBrackets(str),y_correct)==0)))\r\n\r\n%%\r\nstr = '{one} two three {four} five {six} seven';\r\ny_correct = {'one';'four';'six'};\r\nassert(isempty(find(strcmp(parseBrackets(str),y_correct)==0)))\r\n\r\n%%\r\nstr = '{Where} in the world {is the} thick, red {encyclopedia?}';\r\ny_correct = {'Where';'is the';'encyclopedia?'};\r\nassert(isempty(find(strcmp(parseBrackets(str),y_correct)==0)))\r\n","published":true,"deleted":false,"likes_count":0,"comments_count":1,"created_by":29461,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":33,"test_suite_updated_at":"2016-10-19T17:46:11.000Z","rescore_all_solutions":false,"group_id":1,"created_at":"2016-10-05T21:13:31.000Z","updated_at":"2026-05-29T01:46:30.000Z","published_at":"2016-10-19T17:41:54.000Z","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\u003eReturn all substrings that are contained within braces ({}).\u003c/w:t\u003e\u003c/w:r\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\u003eFor example:\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"code\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003e\u003c![CDATA[str = 'x = rho*x{-1} + (1-rho)*y{+1}';]]\u003e\u003c/w:t\u003e\u003c/w:r\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\u003ewhen passed to the function, should return a cell with '-1' and '+1' as its contents.\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":43076,"title":"Return strings encapsulated by braces","description":"Return all substrings that are contained within braces ({}).\r\n\r\nFor example:\r\n\r\n  str = 'x = rho*x{-1} + (1-rho)*y{+1}';\r\n\r\nwhen passed to the function, should return a cell with '-1' and '+1' as its contents.","description_html":"\u003cp\u003eReturn all substrings that are contained within braces ({}).\u003c/p\u003e\u003cp\u003eFor example:\u003c/p\u003e\u003cpre class=\"language-matlab\"\u003estr = 'x = rho*x{-1} + (1-rho)*y{+1}';\r\n\u003c/pre\u003e\u003cp\u003ewhen passed to the function, should return a cell with '-1' and '+1' as its contents.\u003c/p\u003e","function_template":"function y = parseBrackets(x)\r\n  y = x;\r\nend","test_suite":"%%\r\nstr = 'series{d-96}x11{second}';\r\ny_correct = {'d-96';'second'};\r\nassert(isempty(find(strcmp(parseBrackets(str),y_correct)==0)))\r\n\r\n%%\r\nstr = 'x=rho*x{-1}+(1-rho)*y{+1}';\r\ny_correct = {'-1';'+1'};\r\nassert(isempty(find(strcmp(parseBrackets(str),y_correct)==0)))\r\n\r\n%%\r\nstr = 'hello there; this string contains no braces';\r\ny_correct = {};\r\nassert(isempty(find(strcmp(parseBrackets(str),y_correct)==0)))\r\n\r\n%%\r\nstr = '{one} two three {four} five {six} seven';\r\ny_correct = {'one';'four';'six'};\r\nassert(isempty(find(strcmp(parseBrackets(str),y_correct)==0)))\r\n\r\n%%\r\nstr = '{Where} in the world {is the} thick, red {encyclopedia?}';\r\ny_correct = {'Where';'is the';'encyclopedia?'};\r\nassert(isempty(find(strcmp(parseBrackets(str),y_correct)==0)))\r\n","published":true,"deleted":false,"likes_count":0,"comments_count":1,"created_by":29461,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":33,"test_suite_updated_at":"2016-10-19T17:46:11.000Z","rescore_all_solutions":false,"group_id":1,"created_at":"2016-10-05T21:13:31.000Z","updated_at":"2026-05-29T01:46:30.000Z","published_at":"2016-10-19T17:41:54.000Z","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\u003eReturn all substrings that are contained within braces ({}).\u003c/w:t\u003e\u003c/w:r\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\u003eFor example:\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"code\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003e\u003c![CDATA[str = 'x = rho*x{-1} + (1-rho)*y{+1}';]]\u003e\u003c/w:t\u003e\u003c/w:r\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\u003ewhen passed to the function, should return a cell with '-1' and '+1' as its contents.\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:\"cellarray\"","page":1,"per_page":50,"sort":"map(difficulty_value,0,0,999) asc"}}