{"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":380,"title":"Convert a numerical matrix into a cell array of strings ","description":"Given a numerical matrix, output a *cell array of string*.\r\n\r\nFor example:\r\n\r\nif input = 1:3\r\n\r\noutput is  {'1','2','3'}\r\n\r\nwhich is a cell 1x3  ","description_html":"\u003cp\u003eGiven a numerical matrix, output a \u003cb\u003ecell array of string\u003c/b\u003e.\u003c/p\u003e\u003cp\u003eFor example:\u003c/p\u003e\u003cp\u003eif input = 1:3\u003c/p\u003e\u003cp\u003eoutput is  {'1','2','3'}\u003c/p\u003e\u003cp\u003ewhich is a cell 1x3\u003c/p\u003e","function_template":"function output = matrix2cell(input)\r\n  output = 0;\r\nend","test_suite":"%% Example tested\r\ninput = 1:3;\r\noutput = {'1'    '2'    '3'};\r\nassert(isequal(matrix2cell(input ),output))\r\nassert(iscell(output),'output must be a cell')\r\n\r\n%% \r\ninput  = 0:5:8\r\noutput =  {'0'    '5'};\r\nassert(isequal(matrix2cell(input ),output))\r\nassert(iscell(output),'output must be a cell')\r\n\r\n\r\n\r\n%% Matrix input\r\ninput =magic(3);\r\noutput =  {'8'    '1'    '6'\r\n    '3'    '5'    '7'\r\n    '4'    '9'    '2'}\r\nassert(isequal(matrix2cell(input ),output))","published":true,"deleted":false,"likes_count":11,"comments_count":1,"created_by":639,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":2511,"test_suite_updated_at":"2012-02-22T08:00:05.000Z","rescore_all_solutions":false,"group_id":1,"created_at":"2012-02-22T07:38:43.000Z","updated_at":"2026-06-01T00:21:32.000Z","published_at":"2012-02-22T08:21:53.000Z","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\u003eGiven a numerical matrix, output a\u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:t\u003e \u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:rPr\u003e\u003cw:b/\u003e\u003c/w:rPr\u003e\u003cw:t\u003ecell array of string\u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:t\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\u003eFor example:\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\u003eif input = 1:3\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\u003eoutput is {'1','2','3'}\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\u003ewhich is a cell 1x3\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":380,"title":"Convert a numerical matrix into a cell array of strings ","description":"Given a numerical matrix, output a *cell array of string*.\r\n\r\nFor example:\r\n\r\nif input = 1:3\r\n\r\noutput is  {'1','2','3'}\r\n\r\nwhich is a cell 1x3  ","description_html":"\u003cp\u003eGiven a numerical matrix, output a \u003cb\u003ecell array of string\u003c/b\u003e.\u003c/p\u003e\u003cp\u003eFor example:\u003c/p\u003e\u003cp\u003eif input = 1:3\u003c/p\u003e\u003cp\u003eoutput is  {'1','2','3'}\u003c/p\u003e\u003cp\u003ewhich is a cell 1x3\u003c/p\u003e","function_template":"function output = matrix2cell(input)\r\n  output = 0;\r\nend","test_suite":"%% Example tested\r\ninput = 1:3;\r\noutput = {'1'    '2'    '3'};\r\nassert(isequal(matrix2cell(input ),output))\r\nassert(iscell(output),'output must be a cell')\r\n\r\n%% \r\ninput  = 0:5:8\r\noutput =  {'0'    '5'};\r\nassert(isequal(matrix2cell(input ),output))\r\nassert(iscell(output),'output must be a cell')\r\n\r\n\r\n\r\n%% Matrix input\r\ninput =magic(3);\r\noutput =  {'8'    '1'    '6'\r\n    '3'    '5'    '7'\r\n    '4'    '9'    '2'}\r\nassert(isequal(matrix2cell(input ),output))","published":true,"deleted":false,"likes_count":11,"comments_count":1,"created_by":639,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":2511,"test_suite_updated_at":"2012-02-22T08:00:05.000Z","rescore_all_solutions":false,"group_id":1,"created_at":"2012-02-22T07:38:43.000Z","updated_at":"2026-06-01T00:21:32.000Z","published_at":"2012-02-22T08:21:53.000Z","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\u003eGiven a numerical matrix, output a\u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:t\u003e \u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:rPr\u003e\u003cw:b/\u003e\u003c/w:rPr\u003e\u003cw:t\u003ecell array of string\u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:t\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\u003eFor example:\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\u003eif input = 1:3\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\u003eoutput is {'1','2','3'}\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\u003ewhich is a cell 1x3\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 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