{"group":{"group":{"id":46,"name":"Draw Letters","lockable":false,"created_at":"2018-08-01T18:06:15.000Z","updated_at":"2025-12-14T01:33:56.000Z","description":"Create matrices to draw different letters of the alphabet.","is_default":false,"created_by":26769,"badge_id":61,"featured":false,"trending":false,"solution_count_in_trending_period":89,"trending_last_calculated":"2025-12-14T00:00:00.000Z","image_id":422,"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":"{\"parts\":[{\"partUri\":\"/matlab/document.xml\",\"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\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eCreate matrices to draw different letters of the alphabet.\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003c/w:body\u003e\u003c/w:document\u003e\",\"relationship\":null}],\"relationships\":[{\"relationshipType\":\"http://schemas.mathworks.com/matlab/code/2013/relationships/document\",\"target\":\"/matlab/document.xml\",\"relationshipId\":\"rId1\"}]}","description_html":"\u003cdiv style = \"text-align: start; line-height: normal; min-height: 0px; white-space: normal; color: rgb(0, 0, 0); font-family: Menlo, Monaco, Consolas, monospace; font-style: normal; font-size: 14px; font-weight: 400; text-decoration: none solid rgb(0, 0, 0); white-space: normal; \"\u003e\u003cdiv style=\"display: block; min-width: 0px; padding-top: 0px; perspective-origin: 289.5px 10.5px; transform-origin: 289.5px 10.5px; \"\u003e\u003cdiv style=\"font-family: Helvetica, Arial, sans-serif; line-height: 21px; margin-bottom: 9px; margin-left: 4px; margin-right: 10px; margin-top: 2px; text-align: left; white-space: pre-wrap; perspective-origin: 266.5px 10.5px; transform-origin: 266.5px 10.5px; margin-left: 4px; margin-top: 2px; margin-bottom: 9px; margin-right: 10px; \"\u003e\u003cspan style=\"display: inline; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 0px 0px; transform-origin: 0px 0px; \"\u003e\u003cspan style=\"\"\u003eCreate matrices to draw different letters of the alphabet.\u003c/span\u003e\u003c/span\u003e\u003c/div\u003e\u003c/div\u003e\u003c/div\u003e","published_at":"2019-05-08T20:15:35.000Z"},"current_player":null},"problems":[{"id":44685,"title":"Draw 'B'","description":"Draw a x-by-x matrix 'B' using 1 and 0. (x is odd and bigger than 4)\r\n\r\nExample:\r\n \r\n  x=5\r\n  ans=\r\n  [1 1 1 1 0\r\n   1 0 0 0 1\r\n   1 1 1 1 0\r\n   1 0 0 0 1\r\n   1 1 1 1 0]\r\n  x=7\r\n  ans=\r\n  [1 1 1 1 1 1 0\r\n   1 0 0 0 0 0 1\r\n   1 0 0 0 0 0 1\r\n   1 1 1 1 1 1 0 \r\n   1 0 0 0 0 0 1\r\n   1 0 0 0 0 0 1\r\n   1 1 1 1 1 1 0]","description_html":"\u003cp\u003eDraw a x-by-x matrix 'B' using 1 and 0. (x is odd and bigger than 4)\u003c/p\u003e\u003cp\u003eExample:\u003c/p\u003e\u003cpre class=\"language-matlab\"\u003ex=5\r\nans=\r\n[1 1 1 1 0\r\n 1 0 0 0 1\r\n 1 1 1 1 0\r\n 1 0 0 0 1\r\n 1 1 1 1 0]\r\nx=7\r\nans=\r\n[1 1 1 1 1 1 0\r\n 1 0 0 0 0 0 1\r\n 1 0 0 0 0 0 1\r\n 1 1 1 1 1 1 0 \r\n 1 0 0 0 0 0 1\r\n 1 0 0 0 0 0 1\r\n 1 1 1 1 1 1 0]\r\n\u003c/pre\u003e","function_template":"function y = your_fcn_name(x)\r\n  y = x;\r\nend","test_suite":"%%\r\nx = 5;\r\ny_correct = ...\r\n[1 1 1 1 0\r\n 1 0 0 0 1\r\n 1 1 1 1 0\r\n 1 0 0 0 1\r\n 1 1 1 1 0];\r\nassert(isequal(your_fcn_name(x),y_correct))\r\n%%\r\nx = 7;\r\ny_correct = ...\r\n[1 1 1 1 1 1 0\r\n 1 0 0 0 0 0 1\r\n 1 0 0 0 0 0 1\r\n 1 1 1 1 1 1 0 \r\n 1 0 0 0 0 0 1\r\n 1 0 0 0 0 0 1\r\n 1 1 1 1 1 1 0]\r\nassert(isequal(your_fcn_name(x),y_correct))\r\n%%\r\nx = 11;\r\ny_correct = ...\r\n[1 1 1 1 1 1 1 1 1 1 0\r\n 1 0 0 0 0 0 0 0 0 0 1\r\n 1 0 0 0 0 0 0 0 0 0 1\r\n 1 0 0 0 0 0 0 0 0 0 1\r\n 1 0 0 0 0 0 0 0 0 0 1\r\n 1 1 1 1 1 1 1 1 1 1 0\r\n 1 0 0 0 0 0 0 0 0 0 1\r\n 1 0 0 0 0 0 0 0 0 0 1\r\n 1 0 0 0 0 0 0 0 0 0 1\r\n 1 0 0 0 0 0 0 0 0 0 1\r\n 1 1 1 1 1 1 1 1 1 1 0]\r\nassert(isequal(your_fcn_name(x),y_correct))\r\n","published":true,"deleted":false,"likes_count":16,"comments_count":3,"created_by":218677,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":1067,"test_suite_updated_at":"2019-05-13T17:47:23.000Z","rescore_all_solutions":false,"group_id":1,"created_at":"2018-06-11T19:54:31.000Z","updated_at":"2026-03-23T18:02:18.000Z","published_at":"2018-06-11T19:54:31.000Z","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\u003eDraw a x-by-x matrix 'B' using 1 and 0. (x is odd and bigger than 4)\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\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[x=5\\nans=\\n[1 1 1 1 0\\n 1 0 0 0 1\\n 1 1 1 1 0\\n 1 0 0 0 1\\n 1 1 1 1 0]\\nx=7\\nans=\\n[1 1 1 1 1 1 0\\n 1 0 0 0 0 0 1\\n 1 0 0 0 0 0 1\\n 1 1 1 1 1 1 0 \\n 1 0 0 0 0 0 1\\n 1 0 0 0 0 0 1\\n 1 1 1 1 1 1 0]]]\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\"}]}"},{"id":44672,"title":"Draw 'C'.","description":"Given x as input, generate a x-by-x matrix 'C' using 0 and 1.\r\nexample:\r\n\r\n  x=4\r\n  ans=\r\n        [0 1 1 1\r\n         1 0 0 0\r\n         1 0 0 0\r\n         0 1 1 1]","description_html":"\u003cp\u003eGiven x as input, generate a x-by-x matrix 'C' using 0 and 1.\r\nexample:\u003c/p\u003e\u003cpre class=\"language-matlab\"\u003ex=4\r\nans=\r\n      [0 1 1 1\r\n       1 0 0 0\r\n       1 0 0 0\r\n       0 1 1 1]\r\n\u003c/pre\u003e","function_template":"function y = your_fcn_name(x)\r\n  y = x;\r\nend","test_suite":"%%\r\nx = 4;\r\ny_correct = ...\r\n      [0 1 1 1\r\n       1 0 0 0\r\n       1 0 0 0\r\n       0 1 1 1];\r\nassert(isequal(your_fcn_name(x),y_correct))\r\n%%\r\nx = 3;\r\ny_correct = ...\r\n      [0 1 1 \r\n       1 0 0 \r\n       0 1 1];\r\nassert(isequal(your_fcn_name(x),y_correct))\r\n%%\r\nx = 5;\r\ny_correct = ...\r\n      [0 1 1 1 1\r\n       1 0 0 0 0\r\n       1 0 0 0 0\r\n       1 0 0 0 0\r\n       0 1 1 1 1];\r\nassert(isequal(your_fcn_name(x),y_correct))\r\n%%\r\nx = 6;\r\ny_correct = ...\r\n      [0 1 1 1 1 1\r\n       1 0 0 0 0 0\r\n       1 0 0 0 0 0\r\n       1 0 0 0 0 0\r\n       1 0 0 0 0 0\r\n       0 1 1 1 1 1];\r\nassert(isequal(your_fcn_name(x),y_correct))","published":true,"deleted":false,"likes_count":10,"comments_count":1,"created_by":218677,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":1126,"test_suite_updated_at":null,"rescore_all_solutions":false,"group_id":1,"created_at":"2018-06-03T01:17:37.000Z","updated_at":"2026-03-30T22:57:54.000Z","published_at":"2018-06-03T01:17:37.000Z","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 x as input, generate a x-by-x matrix 'C' using 0 and 1. 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[x=4\\nans=\\n      [0 1 1 1\\n       1 0 0 0\\n       1 0 0 0\\n       0 1 1 1]]]\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\"}]}"},{"id":44673,"title":"Draw 'D'.","description":"Draw a x-by-x matrix 'D' using 0 and 1.\r\n\r\nexample:\r\n\r\n  x=4\r\n  ans=\r\n  [1 1 1 0\r\n   1 0 0 1\r\n   1 0 0 1\r\n   1 1 1 0]","description_html":"\u003cp\u003eDraw a x-by-x matrix 'D' using 0 and 1.\u003c/p\u003e\u003cp\u003eexample:\u003c/p\u003e\u003cpre class=\"language-matlab\"\u003ex=4\r\nans=\r\n[1 1 1 0\r\n 1 0 0 1\r\n 1 0 0 1\r\n 1 1 1 0]\r\n\u003c/pre\u003e","function_template":"function y = your_fcn_name(x)\r\n  y = x;\r\nend","test_suite":"%%\r\nx = 4;\r\ny_correct = ... \r\n[1 1 1 0\r\n 1 0 0 1\r\n 1 0 0 1\r\n 1 1 1 0];\r\nassert(isequal(your_fcn_name(x),y_correct))\r\n%%\r\nx = 3;\r\ny_correct = ... \r\n[1 1 0\r\n 1 0 1\r\n 1 1 0];\r\nassert(isequal(your_fcn_name(x),y_correct))\r\n%%\r\nx = 5;\r\ny_correct = ... \r\n[1 1 1 1 0\r\n 1 0 0 0 1\r\n 1 0 0 0 1\r\n 1 0 0 0 1\r\n 1 1 1 1 0];\r\nassert(isequal(your_fcn_name(x),y_correct))\r\n\r\n%%\r\nx = 6;\r\ny_correct = ... \r\n[1 1 1 1 1 0\r\n 1 0 0 0 0 1\r\n 1 0 0 0 0 1\r\n 1 0 0 0 0 1\r\n 1 0 0 0 0 1\r\n 1 1 1 1 1 0];\r\nassert(isequal(your_fcn_name(x),y_correct))","published":true,"deleted":false,"likes_count":5,"comments_count":0,"created_by":218677,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":1035,"test_suite_updated_at":null,"rescore_all_solutions":false,"group_id":46,"created_at":"2018-06-04T08:27:57.000Z","updated_at":"2026-03-30T22:52:30.000Z","published_at":"2018-06-04T08:27:57.000Z","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\u003eDraw a x-by-x matrix 'D' using 0 and 1.\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\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[x=4\\nans=\\n[1 1 1 0\\n 1 0 0 1\\n 1 0 0 1\\n 1 1 1 0]]]\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\"}]}"},{"id":44679,"title":"Draw 'E'","description":"Draw a x-by-x matrix 'E' using 1 and 0. (x is odd and bigger than 4)\r\n\r\nExample:\r\n\r\n  x=5\r\n  ans=\r\n  [1 1 1 1 1\r\n   1 0 0 0 0\r\n   1 1 1 1 1\r\n   1 0 0 0 0\r\n   1 1 1 1 1]\r\n  \r\n  x=7\r\n  ans=\r\n  [1 1 1 1 1 1 1\r\n   1 0 0 0 0 0 0\r\n   1 0 0 0 0 0 0\r\n   1 1 1 1 1 1 1 \r\n   1 0 0 0 0 0 0\r\n   1 0 0 0 0 0 0\r\n   1 1 1 1 1 1 1]","description_html":"\u003cp\u003eDraw a x-by-x matrix 'E' using 1 and 0. (x is odd and bigger than 4)\u003c/p\u003e\u003cp\u003eExample:\u003c/p\u003e\u003cpre class=\"language-matlab\"\u003ex=5\r\nans=\r\n[1 1 1 1 1\r\n 1 0 0 0 0\r\n 1 1 1 1 1\r\n 1 0 0 0 0\r\n 1 1 1 1 1]\r\n\u003c/pre\u003e\u003cpre class=\"language-matlab\"\u003ex=7\r\nans=\r\n[1 1 1 1 1 1 1\r\n 1 0 0 0 0 0 0\r\n 1 0 0 0 0 0 0\r\n 1 1 1 1 1 1 1 \r\n 1 0 0 0 0 0 0\r\n 1 0 0 0 0 0 0\r\n 1 1 1 1 1 1 1]\r\n\u003c/pre\u003e","function_template":"function y = your_fcn_name(x)\r\n  y = x;\r\nend","test_suite":"%%\r\nx = 5;\r\ny_correct = ...\r\n[1 1 1 1 1\r\n 1 0 0 0 0\r\n 1 1 1 1 1\r\n 1 0 0 0 0\r\n 1 1 1 1 1];\r\nassert(isequal(your_fcn_name(x),y_correct))\r\n%%\r\nx = 7;\r\ny_correct = ...\r\n[1 1 1 1 1 1 1\r\n 1 0 0 0 0 0 0\r\n 1 0 0 0 0 0 0\r\n 1 1 1 1 1 1 1 \r\n 1 0 0 0 0 0 0\r\n 1 0 0 0 0 0 0\r\n 1 1 1 1 1 1 1]\r\nassert(isequal(your_fcn_name(x),y_correct))\r\n%%\r\nx = 11;\r\ny_correct = ...\r\n[1 1 1 1 1 1 1 1 1 1 1\r\n 1 0 0 0 0 0 0 0 0 0 0\r\n 1 0 0 0 0 0 0 0 0 0 0\r\n 1 0 0 0 0 0 0 0 0 0 0\r\n 1 0 0 0 0 0 0 0 0 0 0\r\n 1 1 1 1 1 1 1 1 1 1 1\r\n 1 0 0 0 0 0 0 0 0 0 0\r\n 1 0 0 0 0 0 0 0 0 0 0\r\n 1 0 0 0 0 0 0 0 0 0 0\r\n 1 0 0 0 0 0 0 0 0 0 0\r\n 1 1 1 1 1 1 1 1 1 1 1]\r\nassert(isequal(your_fcn_name(x),y_correct))\r\n","published":true,"deleted":false,"likes_count":16,"comments_count":1,"created_by":218677,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":1117,"test_suite_updated_at":null,"rescore_all_solutions":false,"group_id":46,"created_at":"2018-06-07T10:39:15.000Z","updated_at":"2026-03-29T19:43:44.000Z","published_at":"2018-06-07T10:39:15.000Z","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\u003eDraw a x-by-x matrix 'E' using 1 and 0. (x is odd and bigger than 4)\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\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[x=5\\nans=\\n[1 1 1 1 1\\n 1 0 0 0 0\\n 1 1 1 1 1\\n 1 0 0 0 0\\n 1 1 1 1 1]\\n\\nx=7\\nans=\\n[1 1 1 1 1 1 1\\n 1 0 0 0 0 0 0\\n 1 0 0 0 0 0 0\\n 1 1 1 1 1 1 1 \\n 1 0 0 0 0 0 0\\n 1 0 0 0 0 0 0\\n 1 1 1 1 1 1 1]]]\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\"}]}"},{"id":44680,"title":"Draw 'F'","description":"Draw a x-by-x matrix 'F' using 1 and 0. (x is odd and bigger than 4)\r\n\r\nExample:\r\n\r\n  x=5\r\n  ans=\r\n  [1 1 1 1 1\r\n   1 0 0 0 0\r\n   1 1 1 1 1\r\n   1 0 0 0 0\r\n   1 0 0 0 0]\r\n  x=7\r\n  ans=\r\n  [1 1 1 1 1 1 1\r\n   1 0 0 0 0 0 0\r\n   1 0 0 0 0 0 0\r\n   1 1 1 1 1 1 1 \r\n   1 0 0 0 0 0 0\r\n   1 0 0 0 0 0 0\r\n   1 0 0 0 0 0 0]","description_html":"\u003cp\u003eDraw a x-by-x matrix 'F' using 1 and 0. (x is odd and bigger than 4)\u003c/p\u003e\u003cp\u003eExample:\u003c/p\u003e\u003cpre class=\"language-matlab\"\u003ex=5\r\nans=\r\n[1 1 1 1 1\r\n 1 0 0 0 0\r\n 1 1 1 1 1\r\n 1 0 0 0 0\r\n 1 0 0 0 0]\r\nx=7\r\nans=\r\n[1 1 1 1 1 1 1\r\n 1 0 0 0 0 0 0\r\n 1 0 0 0 0 0 0\r\n 1 1 1 1 1 1 1 \r\n 1 0 0 0 0 0 0\r\n 1 0 0 0 0 0 0\r\n 1 0 0 0 0 0 0]\r\n\u003c/pre\u003e","function_template":"function y = your_fcn_name(x)\r\n  y = x;\r\nend","test_suite":"%%\r\nx = 5;\r\ny_correct = ...\r\n[1 1 1 1 1\r\n 1 0 0 0 0\r\n 1 1 1 1 1\r\n 1 0 0 0 0\r\n 1 0 0 0 0];\r\nassert(isequal(your_fcn_name(x),y_correct))\r\n%%\r\nx = 7;\r\ny_correct = ...\r\n[1 1 1 1 1 1 1\r\n 1 0 0 0 0 0 0\r\n 1 0 0 0 0 0 0\r\n 1 1 1 1 1 1 1 \r\n 1 0 0 0 0 0 0\r\n 1 0 0 0 0 0 0\r\n 1 0 0 0 0 0 0]\r\nassert(isequal(your_fcn_name(x),y_correct))\r\n%%\r\nx = 11;\r\ny_correct = ...\r\n[1 1 1 1 1 1 1 1 1 1 1\r\n 1 0 0 0 0 0 0 0 0 0 0\r\n 1 0 0 0 0 0 0 0 0 0 0\r\n 1 0 0 0 0 0 0 0 0 0 0\r\n 1 0 0 0 0 0 0 0 0 0 0\r\n 1 1 1 1 1 1 1 1 1 1 1\r\n 1 0 0 0 0 0 0 0 0 0 0\r\n 1 0 0 0 0 0 0 0 0 0 0\r\n 1 0 0 0 0 0 0 0 0 0 0\r\n 1 0 0 0 0 0 0 0 0 0 0\r\n 1 0 0 0 0 0 0 0 0 0 0]\r\nassert(isequal(your_fcn_name(x),y_correct))\r\n","published":true,"deleted":false,"likes_count":9,"comments_count":0,"created_by":218677,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":1019,"test_suite_updated_at":null,"rescore_all_solutions":false,"group_id":46,"created_at":"2018-06-07T10:45:43.000Z","updated_at":"2026-03-12T10:49:20.000Z","published_at":"2018-06-07T10:45:43.000Z","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\u003eDraw a x-by-x matrix 'F' using 1 and 0. (x is odd and bigger than 4)\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\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[x=5\\nans=\\n[1 1 1 1 1\\n 1 0 0 0 0\\n 1 1 1 1 1\\n 1 0 0 0 0\\n 1 0 0 0 0]\\nx=7\\nans=\\n[1 1 1 1 1 1 1\\n 1 0 0 0 0 0 0\\n 1 0 0 0 0 0 0\\n 1 1 1 1 1 1 1 \\n 1 0 0 0 0 0 0\\n 1 0 0 0 0 0 0\\n 1 0 0 0 0 0 0]]]\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\"}]}"},{"id":44681,"title":"Draw 'H'","description":"Draw a x-by-x matrix 'H' using 1 and 0. (x is odd and bigger than 2)\r\n\r\nExample:\r\n \r\n  x=5\r\n  ans=\r\n  [1 0 0 0 1\r\n   1 0 0 0 1\r\n   1 1 1 1 1\r\n   1 0 0 0 1\r\n   1 0 0 0 1]\r\n  x=7\r\n  ans=\r\n  [1 0 0 0 0 0 1\r\n   1 0 0 0 0 0 1\r\n   1 0 0 0 0 0 1\r\n   1 1 1 1 1 1 1 \r\n   1 0 0 0 0 0 1\r\n   1 0 0 0 0 0 1\r\n   1 0 0 0 0 0 1]","description_html":"\u003cp\u003eDraw a x-by-x matrix 'H' using 1 and 0. (x is odd and bigger than 2)\u003c/p\u003e\u003cp\u003eExample:\u003c/p\u003e\u003cpre class=\"language-matlab\"\u003ex=5\r\nans=\r\n[1 0 0 0 1\r\n 1 0 0 0 1\r\n 1 1 1 1 1\r\n 1 0 0 0 1\r\n 1 0 0 0 1]\r\nx=7\r\nans=\r\n[1 0 0 0 0 0 1\r\n 1 0 0 0 0 0 1\r\n 1 0 0 0 0 0 1\r\n 1 1 1 1 1 1 1 \r\n 1 0 0 0 0 0 1\r\n 1 0 0 0 0 0 1\r\n 1 0 0 0 0 0 1]\r\n\u003c/pre\u003e","function_template":"function y = your_fcn_name(x)\r\n  y = x;\r\nend","test_suite":"%%\r\nx=3\r\ny_correct = ...\r\n[1 0 1\r\n 1 1 1 \r\n 1 0 1];\r\nassert(isequal(your_fcn_name(x),y_correct))\r\n%%\r\nx = 5;\r\ny_correct = ...\r\n[1 0 0 0 1\r\n 1 0 0 0 1\r\n 1 1 1 1 1\r\n 1 0 0 0 1\r\n 1 0 0 0 1];\r\nassert(isequal(your_fcn_name(x),y_correct))\r\n%%\r\nx = 7;\r\ny_correct = ...\r\n[1 0 0 0 0 0 1\r\n 1 0 0 0 0 0 1\r\n 1 0 0 0 0 0 1\r\n 1 1 1 1 1 1 1 \r\n 1 0 0 0 0 0 1\r\n 1 0 0 0 0 0 1\r\n 1 0 0 0 0 0 1]\r\nassert(isequal(your_fcn_name(x),y_correct))\r\n%%\r\nx = 11;\r\ny_correct = ...\r\n[1 0 0 0 0 0 0 0 0 0 1\r\n 1 0 0 0 0 0 0 0 0 0 1\r\n 1 0 0 0 0 0 0 0 0 0 1\r\n 1 0 0 0 0 0 0 0 0 0 1\r\n 1 0 0 0 0 0 0 0 0 0 1\r\n 1 1 1 1 1 1 1 1 1 1 1\r\n 1 0 0 0 0 0 0 0 0 0 1\r\n 1 0 0 0 0 0 0 0 0 0 1\r\n 1 0 0 0 0 0 0 0 0 0 1\r\n 1 0 0 0 0 0 0 0 0 0 1\r\n 1 0 0 0 0 0 0 0 0 0 1]\r\nassert(isequal(your_fcn_name(x),y_correct))\r\n","published":true,"deleted":false,"likes_count":10,"comments_count":0,"created_by":218677,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":1156,"test_suite_updated_at":null,"rescore_all_solutions":false,"group_id":46,"created_at":"2018-06-07T10:52:50.000Z","updated_at":"2026-03-30T23:05:15.000Z","published_at":"2018-06-07T10:52:50.000Z","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\u003eDraw a x-by-x matrix 'H' using 1 and 0. (x is odd and bigger than 2)\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\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[x=5\\nans=\\n[1 0 0 0 1\\n 1 0 0 0 1\\n 1 1 1 1 1\\n 1 0 0 0 1\\n 1 0 0 0 1]\\nx=7\\nans=\\n[1 0 0 0 0 0 1\\n 1 0 0 0 0 0 1\\n 1 0 0 0 0 0 1\\n 1 1 1 1 1 1 1 \\n 1 0 0 0 0 0 1\\n 1 0 0 0 0 0 1\\n 1 0 0 0 0 0 1]]]\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\"}]}"},{"id":44667,"title":"Draw 'I'","description":"Given n as input, draw a n-by-n matrix 'I' using 0 and 1.\r\n\r\nexample:\r\n\r\n  n=3\r\n  ans= \r\n  [0 1 0\r\n   0 1 0\r\n   0 1 0]\r\n  \r\n  n=4\r\n  [0 1 1 0\r\n   0 1 1 0\r\n   0 1 1 0\r\n   0 1 1 0]","description_html":"\u003cp\u003eGiven n as input, draw a n-by-n matrix 'I' using 0 and 1.\u003c/p\u003e\u003cp\u003eexample:\u003c/p\u003e\u003cpre class=\"language-matlab\"\u003en=3\r\nans= \r\n[0 1 0\r\n 0 1 0\r\n 0 1 0]\r\n\u003c/pre\u003e\u003cpre class=\"language-matlab\"\u003en=4\r\n[0 1 1 0\r\n 0 1 1 0\r\n 0 1 1 0\r\n 0 1 1 0]\r\n\u003c/pre\u003e","function_template":"function y = your_fcn_name(x)\r\n  y = x;\r\nend","test_suite":"%%\r\nx = 1;\r\ny_correct = 1;\r\nassert(isequal(your_fcn_name(x),y_correct))\r\n%%\r\nx = 2;\r\ny_correct = [1 1;1 1];\r\nassert(isequal(your_fcn_name(x),y_correct))\r\n%%\r\nx = 3;\r\ny_correct = [0 1 0;0 1 0;0 1 0];\r\nassert(isequal(your_fcn_name(x),y_correct))\r\n%%\r\nx = 4;\r\ny_correct = [0 1 1 0;0 1 1 0;0 1 1 0;0 1 1 0];\r\nassert(isequal(your_fcn_name(x),y_correct))\r\n%%\r\nx = 5;\r\ny_correct = [0 0 1 0 0; 0 0 1 0 0; 0 0 1 0 0; 0 0 1 0 0; 0 0 1 0 0];\r\nassert(isequal(your_fcn_name(x),y_correct))","published":true,"deleted":false,"likes_count":9,"comments_count":4,"created_by":218677,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":926,"test_suite_updated_at":null,"rescore_all_solutions":false,"group_id":46,"created_at":"2018-05-29T22:19:42.000Z","updated_at":"2026-02-25T13:51:59.000Z","published_at":"2018-05-29T22:19:42.000Z","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 n as input, draw a n-by-n matrix 'I' using 0 and 1.\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\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[n=3\\nans= \\n[0 1 0\\n 0 1 0\\n 0 1 0]\\n\\nn=4\\n[0 1 1 0\\n 0 1 1 0\\n 0 1 1 0\\n 0 1 1 0]]]\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\"}]}"},{"id":44686,"title":"Draw 'J'","description":"Given n as input, generate a n-by-n matrix 'J' using 0 and 1 .\r\n\r\nExample:\r\n\r\n  n=5\r\n  ans=\r\n  [0 0 0 0 1\r\n   0 0 0 0 1\r\n   0 0 0 0 1\r\n   1 0 0 0 1\r\n   1 1 1 1 1]\r\n n=4\r\n  ans=\r\n  [0 0 0 1\r\n   0 0 0 1 \r\n   1 0 0 1\r\n   1 1 1 1]","description_html":"\u003cp\u003eGiven n as input, generate a n-by-n matrix 'J' using 0 and 1 .\u003c/p\u003e\u003cp\u003eExample:\u003c/p\u003e\u003cpre class=\"language-matlab\"\u003en=5\r\nans=\r\n[0 0 0 0 1\r\n 0 0 0 0 1\r\n 0 0 0 0 1\r\n 1 0 0 0 1\r\n 1 1 1 1 1]\r\nn=4\r\nans=\r\n[0 0 0 1\r\n 0 0 0 1 \r\n 1 0 0 1\r\n 1 1 1 1]\r\n\u003c/pre\u003e","function_template":"function ans = J(x)\r\n  zeros(x)\r\nend","test_suite":"%%\r\nx = 5;\r\ny_correct = [0 0 0 0 1\r\n   0 0 0 0 1\r\n   0 0 0 0 1\r\n   1 0 0 0 1\r\n   1 1 1 1 1];\r\nassert(isequal(J(x),y_correct))\r\n%%\r\nx = 3;\r\ny_correct = [0 0 1\r\n   1 0 1 \r\n   1 1 1]  \r\nassert(isequal(J(x),y_correct))\r\n%%\r\nx = 4;\r\ny_correct =  [0 0 0 1\r\n   0 0 0 1\r\n   1 0 0 1\r\n   1 1 1 1]  \r\nassert(isequal(J(x),y_correct))\r\n%%\r\nx = 6;\r\ny_correct = ...\r\n  [0 0 0 0 0 1\r\n   0 0 0 0 0 1\r\n   0 0 0 0 0 1\r\n   0 0 0 0 0 1\r\n   1 0 0 0 0 1\r\n   1 1 1 1 1 1];\r\nassert(isequal(J(x),y_correct))\r\n","published":true,"deleted":false,"likes_count":8,"comments_count":2,"created_by":218677,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":1096,"test_suite_updated_at":null,"rescore_all_solutions":false,"group_id":46,"created_at":"2018-06-12T20:50:35.000Z","updated_at":"2026-02-25T13:39:33.000Z","published_at":"2018-06-12T20:50:35.000Z","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 n as input, generate a n-by-n matrix 'J' using 0 and 1 .\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\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[n=5\\nans=\\n[0 0 0 0 1\\n 0 0 0 0 1\\n 0 0 0 0 1\\n 1 0 0 0 1\\n 1 1 1 1 1]\\nn=4\\nans=\\n[0 0 0 1\\n 0 0 0 1 \\n 1 0 0 1\\n 1 1 1 1]]]\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\"}]}"},{"id":44656,"title":"Draw a 'N'!","description":"Given n as input, generate a n-by-n matrix 'N' using 0 and 1 .\r\n\r\nExample:\r\n\r\n  n=5\r\n  ans=\r\n  [1 0 0 0 1\r\n   1 1 0 0 1\r\n   1 0 1 0 1\r\n   1 0 0 1 1\r\n   1 0 0 0 1]","description_html":"\u003cp\u003eGiven n as input, generate a n-by-n matrix 'N' using 0 and 1 .\u003c/p\u003e\u003cp\u003eExample:\u003c/p\u003e\u003cpre class=\"language-matlab\"\u003en=5\r\nans=\r\n[1 0 0 0 1\r\n 1 1 0 0 1\r\n 1 0 1 0 1\r\n 1 0 0 1 1\r\n 1 0 0 0 1]\r\n\u003c/pre\u003e","function_template":"function ans = N(x)\r\n  zeros(x)\r\nend","test_suite":"%%\r\nx = 5;\r\ny_correct = [1 0 0 0 1\r\n   1 1 0 0 1\r\n   1 0 1 0 1\r\n   1 0 0 1 1\r\n   1 0 0 0 1];\r\nassert(isequal(N(x),y_correct))\r\n%%\r\nx = 3;\r\ny_correct = [1 0 1\r\n   1 1 1 \r\n   1 0 1]  \r\nassert(isequal(N(x),y_correct))\r\n%%\r\nx = 4;\r\ny_correct =  [1 0 0 1\r\n   1 1 0 1\r\n   1 0 1 1\r\n   1 0 0 1]  \r\nassert(isequal(N(x),y_correct))\r\n","published":true,"deleted":false,"likes_count":8,"comments_count":0,"created_by":218677,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":1142,"test_suite_updated_at":"2018-05-28T18:14:22.000Z","rescore_all_solutions":false,"group_id":46,"created_at":"2018-05-28T18:04:48.000Z","updated_at":"2026-02-25T13:36:16.000Z","published_at":"2018-05-28T18:04:48.000Z","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 n as input, generate a n-by-n matrix 'N' using 0 and 1 .\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\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[n=5\\nans=\\n[1 0 0 0 1\\n 1 1 0 0 1\\n 1 0 1 0 1\\n 1 0 0 1 1\\n 1 0 0 0 1]]]\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\"}]}"},{"id":44666,"title":"Draw 'O' !","description":"Given n as input, generate a n-by-n matrix 'O' using 0 and 1 .\r\n\r\nexample:\r\n\r\n  n=4\r\n  ans=\r\n        [1 1 1 1\r\n         1 0 0 1\r\n         1 0 0 1\r\n         1 1 1 1]","description_html":"\u003cp\u003eGiven n as input, generate a n-by-n matrix 'O' using 0 and 1 .\u003c/p\u003e\u003cp\u003eexample:\u003c/p\u003e\u003cpre class=\"language-matlab\"\u003en=4\r\nans=\r\n      [1 1 1 1\r\n       1 0 0 1\r\n       1 0 0 1\r\n       1 1 1 1]\r\n\u003c/pre\u003e","function_template":"function y = your_fcn_name(x)\r\n  y = x;\r\nend","test_suite":"%%\r\nx = 1;\r\ny_correct = 1;\r\nassert(isequal(your_fcn_name(x),y_correct))\r\n%%\r\nx = 2;\r\ny_correct = [1 1;1 1];\r\nassert(isequal(your_fcn_name(x),y_correct))\r\n%%\r\nx = 3;\r\ny_correct = [1 1 1;1 0 1;1 1 1];\r\nassert(isequal(your_fcn_name(x),y_correct))\r\n%%\r\nx = 4;\r\ny_correct = [1 1 1 1\r\n       1 0 0 1\r\n       1 0 0 1\r\n       1 1 1 1];\r\nassert(isequal(your_fcn_name(x),y_correct))","published":true,"deleted":false,"likes_count":10,"comments_count":0,"created_by":218677,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":947,"test_suite_updated_at":"2018-05-29T22:13:18.000Z","rescore_all_solutions":false,"group_id":46,"created_at":"2018-05-29T22:08:21.000Z","updated_at":"2026-03-30T23:10:05.000Z","published_at":"2018-05-29T22:13:18.000Z","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 n as input, generate a n-by-n matrix 'O' using 0 and 1 .\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\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[n=4\\nans=\\n      [1 1 1 1\\n       1 0 0 1\\n       1 0 0 1\\n       1 1 1 1]]]\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\"}]}"},{"id":44652,"title":"Draw a 'X'!","description":"Given n as input Draw a 'X' in a n-by-n matrix.\r\n\r\nexample:\r\n\r\n  n=3\r\n  y=[1 0 1\r\n     0 1 0\r\n     1 0 1]\r\n  \r\n  n=4\r\n  y=[1 0 0 1\r\n     0 1 1 0\r\n     0 1 1 0\r\n     1 0 0 1]\r\n","description_html":"\u003cp\u003eGiven n as input Draw a 'X' in a n-by-n matrix.\u003c/p\u003e\u003cp\u003eexample:\u003c/p\u003e\u003cpre class=\"language-matlab\"\u003en=3\r\ny=[1 0 1\r\n   0 1 0\r\n   1 0 1]\r\n\u003c/pre\u003e\u003cpre class=\"language-matlab\"\u003en=4\r\ny=[1 0 0 1\r\n   0 1 1 0\r\n   0 1 1 0\r\n   1 0 0 1]\r\n\u003c/pre\u003e","function_template":"function y = X(n)\r\n  y = eye(n);\r\nend","test_suite":"%%\r\nn=3;\r\ny=[1 0 1\r\n   0 1 0\r\n   1 0 1];\r\nassert(isequal(X(n),y))\r\n%%\r\nn=4;\r\ny=[1 0 0 1\r\n   0 1 1 0\r\n   0 1 1 0\r\n   1 0 0 1];\r\nassert(isequal(X(n),y))\r\n%%\r\nn=1;\r\ny=[1]\r\nassert(isequal(X(n),y))\r\n%%\r\nn=2;\r\ny=[1 1;1 1]\r\nassert(isequal(X(n),y))\r\n%%\r\nn=5;\r\ny=[1 0 0 0 1\r\n   0 1 0 1 0\r\n   0 0 1 0 0\r\n   0 1 0 1 0\r\n   1 0 0 0 1];\r\nassert(isequal(X(n),y))","published":true,"deleted":false,"likes_count":10,"comments_count":0,"created_by":218677,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":1028,"test_suite_updated_at":null,"rescore_all_solutions":false,"group_id":46,"created_at":"2018-05-24T01:43:51.000Z","updated_at":"2026-03-30T23:14:58.000Z","published_at":"2018-05-24T01:43:51.000Z","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 n as input Draw a 'X' in a n-by-n matrix.\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\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[n=3\\ny=[1 0 1\\n   0 1 0\\n   1 0 1]\\n\\nn=4\\ny=[1 0 0 1\\n   0 1 1 0\\n   0 1 1 0\\n   1 0 0 1]]]\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\"}]}"},{"id":44646,"title":"Draw a 'Z'.","description":"Given _n_ as input, generate a  n-by-n matrix like 'Z' by _0_  and _1_ .\r\n\r\nExample:\r\n\r\n  n=5\r\n  ans=\r\n  [1 1 1 1 1\r\n   0 0 0 1 0\r\n   0 0 1 0 0\r\n   0 1 0 0 0\r\n   1 1 1 1 1]\r\n","description_html":"\u003cp\u003eGiven \u003ci\u003en\u003c/i\u003e as input, generate a  n-by-n matrix like 'Z' by \u003ci\u003e0\u003c/i\u003e  and \u003ci\u003e1\u003c/i\u003e .\u003c/p\u003e\u003cp\u003eExample:\u003c/p\u003e\u003cpre class=\"language-matlab\"\u003en=5\r\nans=\r\n[1 1 1 1 1\r\n 0 0 0 1 0\r\n 0 0 1 0 0\r\n 0 1 0 0 0\r\n 1 1 1 1 1]\r\n\u003c/pre\u003e","function_template":"function ans = Z(n)\r\n  zeros(n)\r\nend","test_suite":"%%\r\nn = 3;\r\ny_correct = [1 1 1;0 1 0;1 1 1];\r\nassert(isequal(Z(n),y_correct))\r\n%%\r\nn = 4;\r\ny_correct = [1 1 1 1;0 0 1 0; 0 1 0 0; 1 1 1 1];\r\nassert(isequal(Z(n),y_correct))\r\n%%\r\nn = 5;\r\ny_correct = [1 1 1 1 1; 0 0 0 1 0;  0 0 1 0 0;  0 1 0 0 0;  1 1 1 1 1];\r\nassert(isequal(Z(n),y_correct))\r\n\r\n","published":true,"deleted":false,"likes_count":12,"comments_count":1,"created_by":218677,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":926,"test_suite_updated_at":null,"rescore_all_solutions":false,"group_id":46,"created_at":"2018-05-19T18:58:36.000Z","updated_at":"2026-02-25T13:31:55.000Z","published_at":"2018-05-19T18:58:36.000Z","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 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\u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:rPr\u003e\u003cw:i/\u003e\u003c/w:rPr\u003e\u003cw:t\u003e1\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\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[n=5\\nans=\\n[1 1 1 1 1\\n 0 0 0 1 0\\n 0 0 1 0 0\\n 0 1 0 0 0\\n 1 1 1 1 1]]]\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\\\" 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