{"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":42770,"title":"Create formatted value string Cell array of a vector","description":"This Challenge is to create a cell array that contains strings of vector components in a given format.\r\n\r\nc=vector2formattedstringCA(fmt,v)\r\n\r\n*Example:*\r\n\r\n  fmt='%.3f'; v=[-3.1416 -1.5708 0 1.5708  3.1416]\r\n  c={ '-3.142'    '-1.571'    '0.000'    '1.571'    '3.142'}\r\n\r\n*References:*\r\n\r\nI observed an intriguing function usage by LY Cao and googled it to \u003chttp://undocumentedmatlab.com/blog/sprintfc-undocumented-helper-function Undocumented Matlab\u003e .","description_html":"\u003cp\u003eThis Challenge is to create a cell array that contains strings of vector components in a given format.\u003c/p\u003e\u003cp\u003ec=vector2formattedstringCA(fmt,v)\u003c/p\u003e\u003cp\u003e\u003cb\u003eExample:\u003c/b\u003e\u003c/p\u003e\u003cpre class=\"language-matlab\"\u003efmt='%.3f'; v=[-3.1416 -1.5708 0 1.5708  3.1416]\r\nc={ '-3.142'    '-1.571'    '0.000'    '1.571'    '3.142'}\r\n\u003c/pre\u003e\u003cp\u003e\u003cb\u003eReferences:\u003c/b\u003e\u003c/p\u003e\u003cp\u003eI observed an intriguing function usage by LY Cao and googled it to \u003ca href = \"http://undocumentedmatlab.com/blog/sprintfc-undocumented-helper-function\"\u003eUndocumented Matlab\u003c/a\u003e .\u003c/p\u003e","function_template":"function c=vector2formattedstringCA(fmt,v)\r\n% Create string cell array of vector v of format fmt\r\n  c={};\r\nend","test_suite":"%%\r\nfmt='%.3f'; \r\nv=[-3.1416 -1.5708 0 1.5708  3.1416];\r\nc_exp={ '-3.142'    '-1.571'    '0.000'    '1.571'    '3.142'};\r\nassert(isequal(vector2formattedstringCA(fmt,v),c_exp))\r\n%%\r\nfmt='%.6f';\r\nv=rand(1,5);\r\nc_exp={};\r\nfor data=v\r\n c_exp{end+1} = sprintf(fmt,data);\r\nend\r\nassert(isequal(vector2formattedstringCA(fmt,v),c_exp))\r\n%%\r\nfmt='%i';\r\nv=rand(1,10)*100;\r\nc_exp={};\r\nfor data=v\r\n c_exp{end+1} = sprintf(fmt,data);\r\nend\r\nassert(isequal(vector2formattedstringCA(fmt,v),c_exp))\r\n","published":true,"deleted":false,"likes_count":1,"comments_count":0,"created_by":3097,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":32,"test_suite_updated_at":null,"rescore_all_solutions":false,"group_id":1,"created_at":"2016-03-13T15:14:25.000Z","updated_at":"2026-05-28T14:42:28.000Z","published_at":"2016-03-13T15:26:08.000Z","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\u003eThis Challenge is to create a cell array that contains strings of vector components in a given format.\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\u003ec=vector2formattedstringCA(fmt,v)\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:rPr\u003e\u003cw:b/\u003e\u003c/w:rPr\u003e\u003cw:t\u003eExample:\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[fmt='%.3f'; v=[-3.1416 -1.5708 0 1.5708  3.1416]\\nc={ '-3.142'    '-1.571'    '0.000'    '1.571'    '3.142'}]]\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:rPr\u003e\u003cw:b/\u003e\u003c/w:rPr\u003e\u003cw:t\u003eReferences:\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\u003eI observed an intriguing function usage by LY Cao and googled it 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://undocumentedmatlab.com/blog/sprintfc-undocumented-helper-function\\\"\u003e\u003cw:r\u003e\u003cw:t\u003eUndocumented Matlab\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:hyperlink\u003e\u003cw:r\u003e\u003cw:t\u003e .\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":42770,"title":"Create formatted value string Cell array of a vector","description":"This Challenge is to create a cell array that contains strings of vector components in a given format.\r\n\r\nc=vector2formattedstringCA(fmt,v)\r\n\r\n*Example:*\r\n\r\n  fmt='%.3f'; v=[-3.1416 -1.5708 0 1.5708  3.1416]\r\n  c={ '-3.142'    '-1.571'    '0.000'    '1.571'    '3.142'}\r\n\r\n*References:*\r\n\r\nI observed an intriguing function usage by LY Cao and googled it to \u003chttp://undocumentedmatlab.com/blog/sprintfc-undocumented-helper-function Undocumented Matlab\u003e .","description_html":"\u003cp\u003eThis Challenge is to create a cell array that contains strings of vector components in a given format.\u003c/p\u003e\u003cp\u003ec=vector2formattedstringCA(fmt,v)\u003c/p\u003e\u003cp\u003e\u003cb\u003eExample:\u003c/b\u003e\u003c/p\u003e\u003cpre class=\"language-matlab\"\u003efmt='%.3f'; v=[-3.1416 -1.5708 0 1.5708  3.1416]\r\nc={ '-3.142'    '-1.571'    '0.000'    '1.571'    '3.142'}\r\n\u003c/pre\u003e\u003cp\u003e\u003cb\u003eReferences:\u003c/b\u003e\u003c/p\u003e\u003cp\u003eI observed an intriguing function usage by LY Cao and googled it to \u003ca href = \"http://undocumentedmatlab.com/blog/sprintfc-undocumented-helper-function\"\u003eUndocumented Matlab\u003c/a\u003e .\u003c/p\u003e","function_template":"function c=vector2formattedstringCA(fmt,v)\r\n% Create string cell array of vector v of format fmt\r\n  c={};\r\nend","test_suite":"%%\r\nfmt='%.3f'; \r\nv=[-3.1416 -1.5708 0 1.5708  3.1416];\r\nc_exp={ '-3.142'    '-1.571'    '0.000'    '1.571'    '3.142'};\r\nassert(isequal(vector2formattedstringCA(fmt,v),c_exp))\r\n%%\r\nfmt='%.6f';\r\nv=rand(1,5);\r\nc_exp={};\r\nfor data=v\r\n c_exp{end+1} = sprintf(fmt,data);\r\nend\r\nassert(isequal(vector2formattedstringCA(fmt,v),c_exp))\r\n%%\r\nfmt='%i';\r\nv=rand(1,10)*100;\r\nc_exp={};\r\nfor data=v\r\n c_exp{end+1} = sprintf(fmt,data);\r\nend\r\nassert(isequal(vector2formattedstringCA(fmt,v),c_exp))\r\n","published":true,"deleted":false,"likes_count":1,"comments_count":0,"created_by":3097,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":32,"test_suite_updated_at":null,"rescore_all_solutions":false,"group_id":1,"created_at":"2016-03-13T15:14:25.000Z","updated_at":"2026-05-28T14:42:28.000Z","published_at":"2016-03-13T15:26:08.000Z","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\u003eThis Challenge is to create a cell array that contains strings of vector components in a given format.\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\u003ec=vector2formattedstringCA(fmt,v)\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:rPr\u003e\u003cw:b/\u003e\u003c/w:rPr\u003e\u003cw:t\u003eExample:\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[fmt='%.3f'; v=[-3.1416 -1.5708 0 1.5708  3.1416]\\nc={ '-3.142'    '-1.571'    '0.000'    '1.571'    '3.142'}]]\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:rPr\u003e\u003cw:b/\u003e\u003c/w:rPr\u003e\u003cw:t\u003eReferences:\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\u003eI observed an intriguing function usage by LY Cao and googled it 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://undocumentedmatlab.com/blog/sprintfc-undocumented-helper-function\\\"\u003e\u003cw:r\u003e\u003cw:t\u003eUndocumented Matlab\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:hyperlink\u003e\u003cw:r\u003e\u003cw:t\u003e .\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":"easy","count":1,"selected":false}]],"term":"tag:\"ismembc\"","page":1,"per_page":50,"sort":"map(difficulty_value,0,0,999) asc"}}