{"group":{"id":1,"name":"Community","lockable":false,"created_at":"2012-01-18T18:02:15.000Z","updated_at":"2025-12-14T01:33:56.000Z","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":"2025-12-14T00:00:00.000Z","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":2571,"title":"Vectors counting by 2","description":"Create a vector numbers from 7 to 15 in increments of 2","description_html":"\u003cp\u003eCreate a vector numbers from 7 to 15 in increments of 2\u003c/p\u003e","function_template":"function y = your_fcn_name(x)\r\n  y = .....;\r\nend","test_suite":"%%\r\nx = 1;\r\ny_correct =[7     9    11    13    15];\r\nassert(isequal(your_fcn_name(x),y_correct))","published":true,"deleted":false,"likes_count":2,"comments_count":0,"created_by":29607,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":539,"test_suite_updated_at":"2014-09-10T04:04:30.000Z","rescore_all_solutions":false,"group_id":1,"created_at":"2014-09-10T04:02:13.000Z","updated_at":"2026-03-20T16:35:34.000Z","published_at":"2014-09-10T04:02:13.000Z","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\",\"relationshipId\":\"rId1\",\"target\":\"/matlab/document.xml\"},{\"relationshipType\":\"http://schemas.mathworks.com/matlab/code/2013/relationships/output\",\"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\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\u003eCreate a vector numbers from 7 to 15 in increments of 2\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":2568,"title":"Squaring 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64];\r\nassert(isequal(your_fcn_name(x),A_correct))","published":true,"deleted":false,"likes_count":1,"comments_count":1,"created_by":29607,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":705,"test_suite_updated_at":null,"rescore_all_solutions":false,"group_id":1,"created_at":"2014-09-10T03:28:27.000Z","updated_at":"2026-03-05T07:14:53.000Z","published_at":"2014-09-10T03:28:27.000Z","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\u003eSquare the following matrix using matlab\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[ %\\nA =  1     2     3     4\\n     5     6     7     8\\nSo new matrix should display as\\nA = 1     4     9    16\\n    25    36    49    64]]\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":2570,"title":"ASCii Code","description":"Using matlab, give the symbol that is associated with ASCii code 122","description_html":"\u003cp\u003eUsing matlab, give the symbol that is associated with ASCii code 122\u003c/p\u003e","function_template":"function y = your_fcn_name(x)\r\n  y = ....;\r\nend","test_suite":"%%\r\nx = 1;\r\ny_correct = 'z';\r\nassert(isequal(your_fcn_name(x),y_correct))\r\n","published":true,"deleted":false,"likes_count":3,"comments_count":0,"created_by":29607,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":301,"test_suite_updated_at":"2014-09-10T03:46:10.000Z","rescore_all_solutions":false,"group_id":1,"created_at":"2014-09-10T03:45:14.000Z","updated_at":"2026-02-20T14:01:33.000Z","published_at":"2014-09-10T03:45:14.000Z","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\",\"relationshipId\":\"rId1\",\"target\":\"/matlab/document.xml\"},{\"relationshipType\":\"http://schemas.mathworks.com/matlab/code/2013/relationships/output\",\"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\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\u003eUsing matlab, give the symbol that is associated with ASCii code 122\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":2572,"title":"Counting 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200];\r\nassert(isequal(your_fcn_name(x),y_correct))","published":true,"deleted":false,"likes_count":5,"comments_count":1,"created_by":29607,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":488,"test_suite_updated_at":null,"rescore_all_solutions":false,"group_id":1,"created_at":"2014-09-10T04:08:26.000Z","updated_at":"2026-03-30T13:32:00.000Z","published_at":"2014-09-10T04:08:26.000Z","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\",\"relationshipId\":\"rId1\",\"target\":\"/matlab/document.xml\"},{\"relationshipType\":\"http://schemas.mathworks.com/matlab/code/2013/relationships/output\",\"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\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\u003eCreate a vector that counts from 450 to 200 in increments of 10.\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":2566,"title":"Building matrices","description":"If you have matrix A, create matrix B using matrix A as an \"element\" \r\n\r\n A =  [1     2     3     4;\r\n       5     6     7     8]\r\n\r\n B =  [1     2     3     4     1     2     3     4;\r\n       5     6     7     8     5     6     7     8;\r\n       1     2     3     4     1     2     3     4;\r\n       5     6     7     8     5     6     7     8]\r\n","description_html":"\u003cp\u003eIf you have matrix A, create matrix B using matrix A as an \"element\"\u003c/p\u003e\u003cpre\u003e A =  [1     2     3     4;\r\n       5     6     7     8]\u003c/pre\u003e\u003cpre\u003e B =  [1     2     3     4     1     2     3     4;\r\n       5     6     7     8     5     6     7     8;\r\n       1     2     3     4     1     2     3     4;\r\n       5     6     7     8     5     6     7     8]\u003c/pre\u003e","function_template":"function B = your_fcn_name(x)\r\n  B = .....;\r\nend","test_suite":"%%\r\nx = [1 2 3 4;5 6 7 8];\r\nB_correct = [1 2 3 4 1 2 3 4;5 6 7 8 5 6 7 8;1 2 3 4 1 2 3 4;5 6 7 8 5 6 7 8];\r\nassert(isequal(your_fcn_name(x),B_correct))","published":true,"deleted":false,"likes_count":2,"comments_count":1,"created_by":29607,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":399,"test_suite_updated_at":null,"rescore_all_solutions":false,"group_id":1,"created_at":"2014-09-10T03:01:01.000Z","updated_at":"2026-03-25T00:09:27.000Z","published_at":"2014-09-10T03:01:01.000Z","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\u003eIf you have matrix A, create matrix B using matrix A as an \\\"element\\\"\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[ A =  [1     2     3     4;\\n       5     6     7     8]\\n\\n B =  [1     2     3     4     1     2     3     4;\\n       5     6     7     8     5     6     7     8;\\n       1     2     3     4     1     2     3     4;\\n       5     6     7     8     5     6     7     8]]]\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":2569,"title":"ASCii Code","description":"Using Matlab get the ASCii for '?'","description_html":"\u003cp\u003eUsing Matlab get the ASCii for '?'\u003c/p\u003e","function_template":"function y = your_fcn_name(x)\r\n  y = ...;\r\nend","test_suite":"%%\r\nx = 1;\r\ny_correct = 63;\r\nassert(isequal(your_fcn_name(x),y_correct))\r\n","published":true,"deleted":false,"likes_count":3,"comments_count":1,"created_by":29607,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":288,"test_suite_updated_at":null,"rescore_all_solutions":false,"group_id":1,"created_at":"2014-09-10T03:42:12.000Z","updated_at":"2026-03-29T19:29:38.000Z","published_at":"2014-09-10T03:42:12.000Z","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\",\"relationshipId\":\"rId1\",\"target\":\"/matlab/document.xml\"},{\"relationshipType\":\"http://schemas.mathworks.com/matlab/code/2013/relationships/output\",\"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\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\u003eUsing Matlab get the ASCii for '?'\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":2574,"title":"Replacing a row","description":"For matrix G=[1 2 3; 4 5 6; 7 8 9]\r\n\r\nReplace the 2nd row with 8s\r\n\r\n**remember to create matrix G\r\n","description_html":"\u003cp\u003eFor matrix G=[1 2 3; 4 5 6; 7 8 9]\u003c/p\u003e\u003cp\u003eReplace the 2nd row with 8s\u003c/p\u003e\u003cp\u003e**remember to create matrix G\u003c/p\u003e","function_template":"function G = your_fcn_name(x)\r\n  G=....;\r\nend","test_suite":"%%\r\nx = 1;\r\nG_correct = [1 2 3; 8 8 8; 7 8 9];\r\nassert(isequal(your_fcn_name(x),G_correct))\r\n","published":true,"deleted":false,"likes_count":0,"comments_count":2,"created_by":29607,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":391,"test_suite_updated_at":"2014-09-14T22:05:37.000Z","rescore_all_solutions":false,"group_id":1,"created_at":"2014-09-10T04:21:07.000Z","updated_at":"2026-03-29T19:28:42.000Z","published_at":"2014-09-10T04:21:07.000Z","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\",\"relationshipId\":\"rId1\",\"target\":\"/matlab/document.xml\"},{\"relationshipType\":\"http://schemas.mathworks.com/matlab/code/2013/relationships/output\",\"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\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\u003eFor matrix G=[1 2 3; 4 5 6; 7 8 9]\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\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\u003eReplace the 2nd row with 8s\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\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\u003e**remember to create matrix G\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":2567,"title":"Deleting an element in a matrix","description":"For vector Grades=[98 56 78 34 100 88 87], delete the number 78 to get the following matrix\r\nGrades=[98 56 34 100 88 87]\r\n\r\n**remember you have to create the matrix first","description_html":"\u003cp\u003eFor vector Grades=[98 56 78 34 100 88 87], delete the number 78 to get the following matrix\r\nGrades=[98 56 34 100 88 87]\u003c/p\u003e\u003cp\u003e**remember you have to create the matrix first\u003c/p\u003e","function_template":"function Grades = your_fcn_name(A)\r\n  Grades = ......;\r\nend","test_suite":"%%\r\nA = [98 56 78 34 100 88 87] ;\r\nGrades_correct = [98 56 34 100 88 87];\r\nassert(isequal(your_fcn_name(A),Grades_correct))","published":true,"deleted":false,"likes_count":3,"comments_count":0,"created_by":29607,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":491,"test_suite_updated_at":"2014-09-10T03:17:57.000Z","rescore_all_solutions":false,"group_id":1,"created_at":"2014-09-10T03:16:35.000Z","updated_at":"2026-03-05T16:06:31.000Z","published_at":"2014-09-10T03:16:35.000Z","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\",\"relationshipId\":\"rId1\",\"target\":\"/matlab/document.xml\"},{\"relationshipType\":\"http://schemas.mathworks.com/matlab/code/2013/relationships/output\",\"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\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\u003eFor vector Grades=[98 56 78 34 100 88 87], delete the number 78 to get the following matrix Grades=[98 56 34 100 88 87]\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\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\u003e**remember you have to create the matrix first\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":2573,"title":"Flipping","description":"Write code that can reverse the vector without using any sort of loop. \r\n\r\nExample\r\n\r\nGiven the input vector\r\n\r\n A = [ 1 2 3 4 5 6 7 8 ]\r\n\r\nOutput would be\r\n\r\n B = [ 8 7 6 5 4 3 2 1 ]\r\n","description_html":"\u003cp\u003eWrite code that can reverse the vector without using any sort of loop.\u003c/p\u003e\u003cp\u003eExample\u003c/p\u003e\u003cp\u003eGiven the input vector\u003c/p\u003e\u003cpre\u003e A = [ 1 2 3 4 5 6 7 8 ]\u003c/pre\u003e\u003cp\u003eOutput would be\u003c/p\u003e\u003cpre\u003e B = [ 8 7 6 5 4 3 2 1 ]\u003c/pre\u003e","function_template":"function B = flip_the_vector(A)\r\n  B = ...\r\nend","test_suite":"%%\r\nx = [1 2 3 4 5 6 7 8];\r\nA_correct = [8 7 6 5 4 3 2 1];\r\nassert(isequal(flip_the_vector(x),A_correct));\r\n\r\n%%\r\nx = [5 6 78];\r\nA_correct = [78 6 5];\r\nassert(isequal(flip_the_vector(x),A_correct));\r\n\r\n%%\r\nx = -2;\r\nA_correct = -2;\r\nassert(isequal(flip_the_vector(x),A_correct));","published":true,"deleted":false,"likes_count":2,"comments_count":2,"created_by":29607,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":792,"test_suite_updated_at":"2014-10-08T19:26:02.000Z","rescore_all_solutions":true,"group_id":1,"created_at":"2014-09-10T04:14:23.000Z","updated_at":"2026-02-14T13:07:16.000Z","published_at":"2014-09-10T04:14:22.000Z","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\u003eWrite code that can reverse the vector without using any sort of loop.\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=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eGiven the input vector\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[ A = [ 1 2 3 4 5 6 7 8 ]]]\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\u003eOutput would be\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[ B = [ 8 7 6 5 4 3 2 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\"}]}"}],"problem_search":{"errors":[],"problems":[{"id":2571,"title":"Vectors counting by 2","description":"Create a vector numbers from 7 to 15 in increments of 2","description_html":"\u003cp\u003eCreate a vector numbers from 7 to 15 in increments of 2\u003c/p\u003e","function_template":"function y = your_fcn_name(x)\r\n  y = .....;\r\nend","test_suite":"%%\r\nx = 1;\r\ny_correct =[7     9    11    13    15];\r\nassert(isequal(your_fcn_name(x),y_correct))","published":true,"deleted":false,"likes_count":2,"comments_count":0,"created_by":29607,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":539,"test_suite_updated_at":"2014-09-10T04:04:30.000Z","rescore_all_solutions":false,"group_id":1,"created_at":"2014-09-10T04:02:13.000Z","updated_at":"2026-03-20T16:35:34.000Z","published_at":"2014-09-10T04:02:13.000Z","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\",\"relationshipId\":\"rId1\",\"target\":\"/matlab/document.xml\"},{\"relationshipType\":\"http://schemas.mathworks.com/matlab/code/2013/relationships/output\",\"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\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\u003eCreate a vector numbers from 7 to 15 in increments of 2\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":2568,"title":"Squaring Matrix","description":"Square the following matrix using matlab\r\n\r\n %\r\nA =  1     2     3     4\r\n     5     6     7     8\r\nSo new matrix should display as\r\nA = 1     4     9    16\r\n    25    36    49    64\r\n","description_html":"\u003cp\u003eSquare the following matrix using matlab\u003c/p\u003e\u003cpre\u003e %\r\nA =  1     2     3     4\r\n     5     6     7     8\r\nSo new matrix should display as\r\nA = 1     4     9    16\r\n    25    36    49    64\u003c/pre\u003e","function_template":"function A = your_fcn_name(x)\r\n  A = .....;\r\nend","test_suite":"%%\r\nx = [1 2 3 4;5 6 7 8];\r\nA_correct = [1 4 9 16;25 36 49 64];\r\nassert(isequal(your_fcn_name(x),A_correct))","published":true,"deleted":false,"likes_count":1,"comments_count":1,"created_by":29607,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":705,"test_suite_updated_at":null,"rescore_all_solutions":false,"group_id":1,"created_at":"2014-09-10T03:28:27.000Z","updated_at":"2026-03-05T07:14:53.000Z","published_at":"2014-09-10T03:28:27.000Z","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\u003eSquare the following matrix using matlab\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[ %\\nA =  1     2     3     4\\n     5     6     7     8\\nSo new matrix should display as\\nA = 1     4     9    16\\n    25    36    49    64]]\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":2570,"title":"ASCii Code","description":"Using matlab, give the symbol that is associated with ASCii code 122","description_html":"\u003cp\u003eUsing matlab, give the symbol that is associated with ASCii code 122\u003c/p\u003e","function_template":"function y = your_fcn_name(x)\r\n  y = ....;\r\nend","test_suite":"%%\r\nx = 1;\r\ny_correct = 'z';\r\nassert(isequal(your_fcn_name(x),y_correct))\r\n","published":true,"deleted":false,"likes_count":3,"comments_count":0,"created_by":29607,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":301,"test_suite_updated_at":"2014-09-10T03:46:10.000Z","rescore_all_solutions":false,"group_id":1,"created_at":"2014-09-10T03:45:14.000Z","updated_at":"2026-02-20T14:01:33.000Z","published_at":"2014-09-10T03:45:14.000Z","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\",\"relationshipId\":\"rId1\",\"target\":\"/matlab/document.xml\"},{\"relationshipType\":\"http://schemas.mathworks.com/matlab/code/2013/relationships/output\",\"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\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\u003eUsing matlab, give the symbol that is associated with ASCii code 122\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":2572,"title":"Counting down","description":"Create a vector that counts from 450 to 200 in increments of 10.","description_html":"\u003cp\u003eCreate a vector that counts from 450 to 200 in increments of 10.\u003c/p\u003e","function_template":"function y = your_fcn_name(x)\r\n  y = ...;\r\nend","test_suite":"%%\r\nx = 1;\r\ny_correct = [450   440   430   420   410   400   390   380   370   360   350   340   330   320 310   300   290   280   270   260   250   240   230   220   210   200];\r\nassert(isequal(your_fcn_name(x),y_correct))","published":true,"deleted":false,"likes_count":5,"comments_count":1,"created_by":29607,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":488,"test_suite_updated_at":null,"rescore_all_solutions":false,"group_id":1,"created_at":"2014-09-10T04:08:26.000Z","updated_at":"2026-03-30T13:32:00.000Z","published_at":"2014-09-10T04:08:26.000Z","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\",\"relationshipId\":\"rId1\",\"target\":\"/matlab/document.xml\"},{\"relationshipType\":\"http://schemas.mathworks.com/matlab/code/2013/relationships/output\",\"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\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\u003eCreate a vector that counts from 450 to 200 in increments of 10.\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":2566,"title":"Building matrices","description":"If you have matrix A, create matrix B using matrix A as an \"element\" \r\n\r\n A =  [1     2     3     4;\r\n       5     6     7     8]\r\n\r\n B =  [1     2     3     4     1     2     3     4;\r\n       5     6     7     8     5     6     7     8;\r\n       1     2     3     4     1     2     3     4;\r\n       5     6     7     8     5     6     7     8]\r\n","description_html":"\u003cp\u003eIf you have matrix A, create matrix B using matrix A as an \"element\"\u003c/p\u003e\u003cpre\u003e A =  [1     2     3     4;\r\n       5     6     7     8]\u003c/pre\u003e\u003cpre\u003e B =  [1     2     3     4     1     2     3     4;\r\n       5     6     7     8     5     6     7     8;\r\n       1     2     3     4     1     2     3     4;\r\n       5     6     7     8     5     6     7     8]\u003c/pre\u003e","function_template":"function B = your_fcn_name(x)\r\n  B = .....;\r\nend","test_suite":"%%\r\nx = [1 2 3 4;5 6 7 8];\r\nB_correct = [1 2 3 4 1 2 3 4;5 6 7 8 5 6 7 8;1 2 3 4 1 2 3 4;5 6 7 8 5 6 7 8];\r\nassert(isequal(your_fcn_name(x),B_correct))","published":true,"deleted":false,"likes_count":2,"comments_count":1,"created_by":29607,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":399,"test_suite_updated_at":null,"rescore_all_solutions":false,"group_id":1,"created_at":"2014-09-10T03:01:01.000Z","updated_at":"2026-03-25T00:09:27.000Z","published_at":"2014-09-10T03:01:01.000Z","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\u003eIf you have matrix A, create matrix B using matrix A as an \\\"element\\\"\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[ A =  [1     2     3     4;\\n       5     6     7     8]\\n\\n B =  [1     2     3     4     1     2     3     4;\\n       5     6     7     8     5     6     7     8;\\n       1     2     3     4     1     2     3     4;\\n       5     6     7     8     5     6     7     8]]]\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":2569,"title":"ASCii Code","description":"Using Matlab get the ASCii for '?'","description_html":"\u003cp\u003eUsing Matlab get the ASCii for '?'\u003c/p\u003e","function_template":"function y = your_fcn_name(x)\r\n  y = ...;\r\nend","test_suite":"%%\r\nx = 1;\r\ny_correct = 63;\r\nassert(isequal(your_fcn_name(x),y_correct))\r\n","published":true,"deleted":false,"likes_count":3,"comments_count":1,"created_by":29607,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":288,"test_suite_updated_at":null,"rescore_all_solutions":false,"group_id":1,"created_at":"2014-09-10T03:42:12.000Z","updated_at":"2026-03-29T19:29:38.000Z","published_at":"2014-09-10T03:42:12.000Z","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\",\"relationshipId\":\"rId1\",\"target\":\"/matlab/document.xml\"},{\"relationshipType\":\"http://schemas.mathworks.com/matlab/code/2013/relationships/output\",\"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\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\u003eUsing Matlab get the ASCii for '?'\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":2574,"title":"Replacing a row","description":"For matrix G=[1 2 3; 4 5 6; 7 8 9]\r\n\r\nReplace the 2nd row with 8s\r\n\r\n**remember to create matrix G\r\n","description_html":"\u003cp\u003eFor matrix G=[1 2 3; 4 5 6; 7 8 9]\u003c/p\u003e\u003cp\u003eReplace the 2nd row with 8s\u003c/p\u003e\u003cp\u003e**remember to create matrix G\u003c/p\u003e","function_template":"function G = your_fcn_name(x)\r\n  G=....;\r\nend","test_suite":"%%\r\nx = 1;\r\nG_correct = [1 2 3; 8 8 8; 7 8 9];\r\nassert(isequal(your_fcn_name(x),G_correct))\r\n","published":true,"deleted":false,"likes_count":0,"comments_count":2,"created_by":29607,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":391,"test_suite_updated_at":"2014-09-14T22:05:37.000Z","rescore_all_solutions":false,"group_id":1,"created_at":"2014-09-10T04:21:07.000Z","updated_at":"2026-03-29T19:28:42.000Z","published_at":"2014-09-10T04:21:07.000Z","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\",\"relationshipId\":\"rId1\",\"target\":\"/matlab/document.xml\"},{\"relationshipType\":\"http://schemas.mathworks.com/matlab/code/2013/relationships/output\",\"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\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\u003eFor matrix G=[1 2 3; 4 5 6; 7 8 9]\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\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\u003eReplace the 2nd row with 8s\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\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\u003e**remember to create matrix G\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":2567,"title":"Deleting an element in a matrix","description":"For vector Grades=[98 56 78 34 100 88 87], delete the number 78 to get the following matrix\r\nGrades=[98 56 34 100 88 87]\r\n\r\n**remember you have to create the matrix first","description_html":"\u003cp\u003eFor vector Grades=[98 56 78 34 100 88 87], delete the number 78 to get the following matrix\r\nGrades=[98 56 34 100 88 87]\u003c/p\u003e\u003cp\u003e**remember you have to create the matrix first\u003c/p\u003e","function_template":"function Grades = your_fcn_name(A)\r\n  Grades = ......;\r\nend","test_suite":"%%\r\nA = [98 56 78 34 100 88 87] ;\r\nGrades_correct = [98 56 34 100 88 87];\r\nassert(isequal(your_fcn_name(A),Grades_correct))","published":true,"deleted":false,"likes_count":3,"comments_count":0,"created_by":29607,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":491,"test_suite_updated_at":"2014-09-10T03:17:57.000Z","rescore_all_solutions":false,"group_id":1,"created_at":"2014-09-10T03:16:35.000Z","updated_at":"2026-03-05T16:06:31.000Z","published_at":"2014-09-10T03:16:35.000Z","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\",\"relationshipId\":\"rId1\",\"target\":\"/matlab/document.xml\"},{\"relationshipType\":\"http://schemas.mathworks.com/matlab/code/2013/relationships/output\",\"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\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\u003eFor vector Grades=[98 56 78 34 100 88 87], delete the number 78 to get the following matrix Grades=[98 56 34 100 88 87]\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\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\u003e**remember you have to create the matrix first\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":2573,"title":"Flipping","description":"Write code that can reverse the vector without using any sort of loop. \r\n\r\nExample\r\n\r\nGiven the input vector\r\n\r\n A = [ 1 2 3 4 5 6 7 8 ]\r\n\r\nOutput would be\r\n\r\n B = [ 8 7 6 5 4 3 2 1 ]\r\n","description_html":"\u003cp\u003eWrite code that can reverse the vector without using any sort of loop.\u003c/p\u003e\u003cp\u003eExample\u003c/p\u003e\u003cp\u003eGiven the input vector\u003c/p\u003e\u003cpre\u003e A = [ 1 2 3 4 5 6 7 8 ]\u003c/pre\u003e\u003cp\u003eOutput would be\u003c/p\u003e\u003cpre\u003e B = [ 8 7 6 5 4 3 2 1 ]\u003c/pre\u003e","function_template":"function B = flip_the_vector(A)\r\n  B = ...\r\nend","test_suite":"%%\r\nx = [1 2 3 4 5 6 7 8];\r\nA_correct = [8 7 6 5 4 3 2 1];\r\nassert(isequal(flip_the_vector(x),A_correct));\r\n\r\n%%\r\nx = [5 6 78];\r\nA_correct = [78 6 5];\r\nassert(isequal(flip_the_vector(x),A_correct));\r\n\r\n%%\r\nx = -2;\r\nA_correct = -2;\r\nassert(isequal(flip_the_vector(x),A_correct));","published":true,"deleted":false,"likes_count":2,"comments_count":2,"created_by":29607,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":792,"test_suite_updated_at":"2014-10-08T19:26:02.000Z","rescore_all_solutions":true,"group_id":1,"created_at":"2014-09-10T04:14:23.000Z","updated_at":"2026-02-14T13:07:16.000Z","published_at":"2014-09-10T04:14:22.000Z","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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