{"group":{"id":1,"name":"Community","lockable":false,"created_at":"2012-01-18T18:02:15.000Z","updated_at":"2026-06-25T00:23:38.000Z","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":"2026-06-25T00:00:00.000Z","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":781,"title":"Access a web hosted copy of the Tiles Contest MAT file","description":"Access a web hosted copy of the Tiles Contest sample \"mat\" and verify success by returning for a board the number of tiles, number of rows, and number of columns of the board.\r\n\r\nDetails of the Tiles Contest can be found at \u003chttp://www.mathworks.com/matlabcentral/contest/contests/36 Tiles Contest\u003e.\r\n\r\nThe runcontest.m provides testsuite structure information.\r\n\r\n*Input:* (urlfname, board)\r\n\r\nfn='http://www.toobigforemail.com/cryptkeeper.toobig?nppmkc2=xyeffg\u00266cq_kc2=yae1d8\u00266cq_konmpb=y88ayxyx8xxy1xdyx'\r\n\r\n*Output:* (number of tiles, nrows, ncols)\r\n\r\nFor board 99\r\n\r\n[ 20 10 8 ]\r\n\r\n\r\n\r\nNote: The mat file is a very efficiently packed binary file.\r\n\r\nFollow-up questions will be creation of a mat file and a timed contest for a few of the perfectly solveable Tile boards","description_html":"\u003cp\u003eAccess a web hosted copy of the Tiles Contest sample \"mat\" and verify success by returning for a board the number of tiles, number of rows, and number of columns of the board.\u003c/p\u003e\u003cp\u003eDetails of the Tiles Contest can be found at \u003ca href=\"http://www.mathworks.com/matlabcentral/contest/contests/36\"\u003eTiles Contest\u003c/a\u003e.\u003c/p\u003e\u003cp\u003eThe runcontest.m provides testsuite structure information.\u003c/p\u003e\u003cp\u003e\u003cb\u003eInput:\u003c/b\u003e (urlfname, board)\u003c/p\u003e\u003cp\u003efn='http://www.toobigforemail.com/cryptkeeper.toobig?nppmkc2=xyeffg\u00266cq_kc2=yae1d8\u00266cq_konmpb=y88ayxyx8xxy1xdyx'\u003c/p\u003e\u003cp\u003e\u003cb\u003eOutput:\u003c/b\u003e (number of tiles, nrows, ncols)\u003c/p\u003e\u003cp\u003eFor board 99\u003c/p\u003e\u003cp\u003e[ 20 10 8 ]\u003c/p\u003e\u003cp\u003eNote: The mat file is a very efficiently packed binary file.\u003c/p\u003e\u003cp\u003eFollow-up questions will be creation of a mat file and a timed contest for a few of the perfectly solveable Tile boards\u003c/p\u003e","function_template":"function out = access_url_mat(urlfname,brd)\r\n \r\n %tiles=tests.testsuite(brd).tiles;\r\n\r\n ntiles=1;nrow=1;ncol=1;\r\n \r\n out=[ntiles nrow ncol];\r\n\r\nend","test_suite":"%%\r\n% Cody External accessibility\r\ny=clock;\r\nrand('state',floor(10000*y(6)))\r\nbrd=randi(100,1)\r\n\r\nfn='http://www.toobigforemail.com/cryptkeeper.toobig?nppmkc2=xyeffg\u00266cq_kc2=yae1d8\u00266cq_konmpb=y88ayxyx8xxy1xdyx';\r\n\r\nfn='http://tinyurl.com/matlab-tiles-mat';\r\ntestSuiteFile = 'raz_tiles.mat';\r\nurlwrite(fn,testSuiteFile);\r\n\r\ntests = load(testSuiteFile,'testsuite');\r\n\r\ntiles = tests.testsuite(brd).tiles;\r\nrows = tests.testsuite(brd).r;\r\ncols = tests.testsuite(brd).c;\r\n\r\nexpected=[size(tiles,1) rows cols]\r\n\r\nout=access_url_mat(fn,brd)\r\n\r\nassert(isequal(out,expected))\r\n%%\r\nbrd=randi(100,1)\r\n\r\nfn='http://www.toobigforemail.com/cryptkeeper.toobig?nppmkc2=xyeffg\u00266cq_kc2=yae1d8\u00266cq_konmpb=y88ayxyx8xxy1xdyx';\r\n\r\nfn='http://tinyurl.com/matlab-tiles-mat';\r\ntestSuiteFile = 'raz_tiles.mat';\r\nurlwrite(fn,testSuiteFile);\r\n\r\ntests = load(testSuiteFile,'testsuite');\r\n\r\ntiles = tests.testsuite(brd).tiles;\r\nrows = tests.testsuite(brd).r;\r\ncols = tests.testsuite(brd).c;\r\n\r\nexpected=[size(tiles,1) rows cols]\r\n\r\nout=access_url_mat(fn,brd)\r\n\r\nassert(isequal(out,expected))\r\n","published":true,"deleted":false,"likes_count":0,"comments_count":2,"created_by":3097,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":8,"test_suite_updated_at":"2012-11-22T12:22:58.000Z","rescore_all_solutions":false,"group_id":1,"created_at":"2012-06-21T04:54:17.000Z","updated_at":"2026-05-26T16:59:49.000Z","published_at":"2012-06-22T04:40:01.000Z","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\u003eAccess a web hosted copy of the Tiles Contest sample \\\"mat\\\" and verify success by returning for a board the number of tiles, number of rows, and number of columns of the board.\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\u003eDetails of the Tiles Contest can be found at\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://www.mathworks.com/matlabcentral/contest/contests/36\\\"\u003e\u003cw:r\u003e\u003cw:t\u003eTiles Contest\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\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eThe runcontest.m provides testsuite structure information.\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\u003eInput:\u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:t\u003e (urlfname, board)\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\u003efn='http://www.toobigforemail.com/cryptkeeper.toobig?nppmkc2=xyeffg\u0026amp;6cq_kc2=yae1d8\u0026amp;6cq_konmpb=y88ayxyx8xxy1xdyx'\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\u003eOutput:\u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:t\u003e (number of tiles, nrows, ncols)\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 board 99\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\u003e[ 20 10 8 ]\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\u003eNote: The mat file is a very efficiently packed binary file.\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\u003eFollow-up questions will be creation of a mat file and a timed contest for a few of the perfectly solveable Tile boards\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":781,"title":"Access a web hosted copy of the Tiles Contest MAT file","description":"Access a web hosted copy of the Tiles Contest sample \"mat\" and verify success by returning for a board the number of tiles, number of rows, and number of columns of the board.\r\n\r\nDetails of the Tiles Contest can be found at \u003chttp://www.mathworks.com/matlabcentral/contest/contests/36 Tiles Contest\u003e.\r\n\r\nThe runcontest.m provides testsuite structure information.\r\n\r\n*Input:* (urlfname, board)\r\n\r\nfn='http://www.toobigforemail.com/cryptkeeper.toobig?nppmkc2=xyeffg\u00266cq_kc2=yae1d8\u00266cq_konmpb=y88ayxyx8xxy1xdyx'\r\n\r\n*Output:* (number of tiles, nrows, ncols)\r\n\r\nFor board 99\r\n\r\n[ 20 10 8 ]\r\n\r\n\r\n\r\nNote: The mat file is a very efficiently packed binary file.\r\n\r\nFollow-up questions will be creation of a mat file and a timed contest for a few of the perfectly solveable Tile boards","description_html":"\u003cp\u003eAccess a web hosted copy of the Tiles Contest sample \"mat\" and verify success by returning for a board the number of tiles, number of rows, and number of columns of the board.\u003c/p\u003e\u003cp\u003eDetails of the Tiles Contest can be found at \u003ca href=\"http://www.mathworks.com/matlabcentral/contest/contests/36\"\u003eTiles Contest\u003c/a\u003e.\u003c/p\u003e\u003cp\u003eThe runcontest.m provides testsuite structure information.\u003c/p\u003e\u003cp\u003e\u003cb\u003eInput:\u003c/b\u003e (urlfname, board)\u003c/p\u003e\u003cp\u003efn='http://www.toobigforemail.com/cryptkeeper.toobig?nppmkc2=xyeffg\u00266cq_kc2=yae1d8\u00266cq_konmpb=y88ayxyx8xxy1xdyx'\u003c/p\u003e\u003cp\u003e\u003cb\u003eOutput:\u003c/b\u003e (number of tiles, nrows, ncols)\u003c/p\u003e\u003cp\u003eFor board 99\u003c/p\u003e\u003cp\u003e[ 20 10 8 ]\u003c/p\u003e\u003cp\u003eNote: The mat file is a very efficiently packed binary file.\u003c/p\u003e\u003cp\u003eFollow-up questions will be creation of a mat file and a timed contest for a few of the perfectly solveable Tile boards\u003c/p\u003e","function_template":"function out = access_url_mat(urlfname,brd)\r\n \r\n %tiles=tests.testsuite(brd).tiles;\r\n\r\n ntiles=1;nrow=1;ncol=1;\r\n \r\n out=[ntiles nrow ncol];\r\n\r\nend","test_suite":"%%\r\n% Cody External accessibility\r\ny=clock;\r\nrand('state',floor(10000*y(6)))\r\nbrd=randi(100,1)\r\n\r\nfn='http://www.toobigforemail.com/cryptkeeper.toobig?nppmkc2=xyeffg\u00266cq_kc2=yae1d8\u00266cq_konmpb=y88ayxyx8xxy1xdyx';\r\n\r\nfn='http://tinyurl.com/matlab-tiles-mat';\r\ntestSuiteFile = 'raz_tiles.mat';\r\nurlwrite(fn,testSuiteFile);\r\n\r\ntests = load(testSuiteFile,'testsuite');\r\n\r\ntiles = tests.testsuite(brd).tiles;\r\nrows = tests.testsuite(brd).r;\r\ncols = tests.testsuite(brd).c;\r\n\r\nexpected=[size(tiles,1) rows cols]\r\n\r\nout=access_url_mat(fn,brd)\r\n\r\nassert(isequal(out,expected))\r\n%%\r\nbrd=randi(100,1)\r\n\r\nfn='http://www.toobigforemail.com/cryptkeeper.toobig?nppmkc2=xyeffg\u00266cq_kc2=yae1d8\u00266cq_konmpb=y88ayxyx8xxy1xdyx';\r\n\r\nfn='http://tinyurl.com/matlab-tiles-mat';\r\ntestSuiteFile = 'raz_tiles.mat';\r\nurlwrite(fn,testSuiteFile);\r\n\r\ntests = load(testSuiteFile,'testsuite');\r\n\r\ntiles = tests.testsuite(brd).tiles;\r\nrows = tests.testsuite(brd).r;\r\ncols = tests.testsuite(brd).c;\r\n\r\nexpected=[size(tiles,1) rows cols]\r\n\r\nout=access_url_mat(fn,brd)\r\n\r\nassert(isequal(out,expected))\r\n","published":true,"deleted":false,"likes_count":0,"comments_count":2,"created_by":3097,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":8,"test_suite_updated_at":"2012-11-22T12:22:58.000Z","rescore_all_solutions":false,"group_id":1,"created_at":"2012-06-21T04:54:17.000Z","updated_at":"2026-05-26T16:59:49.000Z","published_at":"2012-06-22T04:40:01.000Z","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\u003eAccess a web hosted copy of the Tiles Contest sample \\\"mat\\\" and verify success by returning for a board the number of tiles, number of rows, and number of columns of the board.\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\u003eDetails of the Tiles Contest can be found at\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://www.mathworks.com/matlabcentral/contest/contests/36\\\"\u003e\u003cw:r\u003e\u003cw:t\u003eTiles Contest\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\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eThe runcontest.m provides testsuite structure information.\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\u003eInput:\u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:t\u003e (urlfname, board)\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\u003efn='http://www.toobigforemail.com/cryptkeeper.toobig?nppmkc2=xyeffg\u0026amp;6cq_kc2=yae1d8\u0026amp;6cq_konmpb=y88ayxyx8xxy1xdyx'\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\u003eOutput:\u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:t\u003e (number of tiles, nrows, ncols)\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 board 99\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\u003e[ 20 10 8 ]\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\u003eNote: The mat file is a very efficiently packed binary file.\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\u003eFollow-up questions will be creation of a mat file and a timed contest for a few of the perfectly solveable Tile boards\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:\"web access\"","page":1,"per_page":50,"sort":"map(difficulty_value,0,0,999) asc"}}