{"group":{"id":1,"name":"Community","lockable":false,"created_at":"2012-01-18T18:02:15.000Z","updated_at":"2026-04-06T14:01:22.000Z","description":"Problems submitted by members of the MATLAB Central community.","is_default":true,"created_by":161519,"badge_id":null,"featured":false,"trending":false,"solution_count_in_trending_period":0,"trending_last_calculated":"2026-04-06T00:00:00.000Z","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":960,"title":"Cell Source Index","description":"Suppose that C is a cell array whose elements consist of row vectors of elements of the same type.  For example, C could be a cell vector of strings:\r\n\r\n  C = {'abc' 'd' 'ef' 'ghij'};\r\n\r\nWe can put all the elements from all the vectors of C into a single vector:\r\n\r\n  VC = [C{:}];\r\n\r\nYour task:  write a function that returns a vector iC, where each element of iC holds the index of the element of C from which the corresponding element of VC came.  For example, if C has the value given above, then this would be the correct contents for iC:\r\n\r\n  iC = [1 1 1 2 3 3 4 4 4 4];\r\n\r\n","description_html":"\u003cp\u003eSuppose that C is a cell array whose elements consist of row vectors of elements of the same type.  For example, C could be a cell vector of strings:\u003c/p\u003e\u003cpre class=\"language-matlab\"\u003eC = {'abc' 'd' 'ef' 'ghij'};\r\n\u003c/pre\u003e\u003cp\u003eWe can put all the elements from all the vectors of C into a single vector:\u003c/p\u003e\u003cpre class=\"language-matlab\"\u003eVC = [C{:}];\r\n\u003c/pre\u003e\u003cp\u003eYour task:  write a function that returns a vector iC, where each element of iC holds the index of the element of C from which the corresponding element of VC came.  For example, if C has the value given above, then this would be the correct contents for iC:\u003c/p\u003e\u003cpre class=\"language-matlab\"\u003eiC = [1 1 1 2 3 3 4 4 4 4];\r\n\u003c/pre\u003e","function_template":"function iC = cellSourceIndex(C)\r\n  iC = [];\r\nend","test_suite":"%%\r\nC = {'abc' 'd' 'ef' 'ghij'};\r\niC = [1 1 1 2 3 3 4 4 4 4];\r\nassert(isequal(cellSourceIndex(C),iC))\r\n\r\n%%\r\nC = {[1 2 3] [] 1 [] 2};\r\niC = [1 1 1 3 5];\r\nassert(isequal(cellSourceIndex(C),iC))\r\n\r\n%%\r\nassert(isequal(cellSourceIndex(num2cell(ones(3))),1:9))\r\n\r\n%%\r\nassert(isequal(cellSourceIndex({[] [] [] 1}),4))\r\n\r\n%%\r\nassert(isempty(cellSourceIndex({})))\r\n\r\n%%\r\nC = {struct('a',{1 2},'b',[]),struct('c',{1 2}),struct('d',{5 6 7 8})};\r\niC = [1 1 2 2 3 3 3 3];\r\nassert(isequal(cellSourceIndex(C),iC))","published":true,"deleted":false,"likes_count":2,"comments_count":1,"created_by":3117,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":45,"test_suite_updated_at":null,"rescore_all_solutions":false,"group_id":1,"created_at":"2012-09-26T18:58:02.000Z","updated_at":"2026-03-31T10:53:41.000Z","published_at":"2012-09-26T18:58:02.000Z","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\u003eSuppose that C is a cell array whose elements consist of row vectors of elements of the same type. For example, C could be a cell vector of strings:\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[C = {'abc' 'd' 'ef' 'ghij'};]]\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\u003eWe can put all the elements from all the vectors of C into a single 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[VC = [C{:}];]]\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\u003eYour task: write a function that returns a vector iC, where each element of iC holds the index of the element of C from which the corresponding element of VC came. For example, if C has the value given above, then this would be the correct contents for iC:\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[iC = [1 1 1 2 3 3 4 4 4 4];]]\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":42797,"title":"Find the path through the cell","description":"A list of cells is given.\r\n\r\nReturn true if the elements of the list increase monotonically (each element is strictly larger than the previous). Return false otherwise.\r\n\r\nFor example :\r\nIf list={1 2 3 4 5} =\u003e the answer is YES (1-\u003e2-\u003e3-\u003e4-\u003e5)\r\n\r\nIf list={[1 2] 4 [4 5] 6} =\u003e the answer is YES (1(or 2)-\u003e4-\u003e5-\u003e6) \r\n\r\nBut if list={[1 2] 0 [4 5] 6} =\u003e the answer is NO (1 or 2 are \u003e0)\r\n\r\nEasy ?\r\n\r\nAnd a list like ... {[10 1] [2 3] [4 40] [1 1 2 2 2 5] 6 40 [1:41] [1:42]} ?\r\n\r\n\r\nGood luck !\r\n","description_html":"\u003cp\u003eA list of cells is given.\u003c/p\u003e\u003cp\u003eReturn true if the elements of the list increase monotonically (each element is strictly larger than the previous). Return false otherwise.\u003c/p\u003e\u003cp\u003eFor example :\r\nIf list={1 2 3 4 5} =\u0026gt; the answer is YES (1-\u0026gt;2-\u0026gt;3-\u0026gt;4-\u0026gt;5)\u003c/p\u003e\u003cp\u003eIf list={[1 2] 4 [4 5] 6} =\u0026gt; the answer is YES (1(or 2)-\u0026gt;4-\u0026gt;5-\u0026gt;6)\u003c/p\u003e\u003cp\u003eBut if list={[1 2] 0 [4 5] 6} =\u0026gt; the answer is NO (1 or 2 are \u0026gt;0)\u003c/p\u003e\u003cp\u003eEasy ?\u003c/p\u003e\u003cp\u003eAnd a list like ... {[10 1] [2 3] [4 40] [1 1 2 2 2 5] 6 40 [1:41] [1:42]} ?\u003c/p\u003e\u003cp\u003eGood luck !\u003c/p\u003e","function_template":"function y = through_list(x)\r\n  y = x;\r\nend","test_suite":"%%\r\nx = {1 2 3 4 5};\r\ny_correct=1;\r\nassert(isequal(through_list(x),y_correct))\r\n%%\r\nx = {1 2 3 4 5 6 7 8 9 10 9};\r\nassert(isequal(through_list(x),0))\r\n%%\r\nx = {0 1 2 3 4 5 [5 5 5 6]};\r\nassert(isequal(through_list(x),1))\r\n%%\r\nx = {[1 2] 4 [4 5] 6};\r\nassert(isequal(through_list(x),1))\r\n%%\r\nassert(isequal(through_list({[1 2] 0 [4 5] 6} ),0))\r\n%%\r\nx = {[-2 -2 0 1] 2 3 4 5};\r\nassert(isequal(through_list(x),1))\r\n%%\r\n{[10 1] [2 3] [4 40] [1 1 2 2 2 5] 6 40 [1:41] [1:42]};\r\nassert(isequal(through_list(ans),1))\r\n%%\r\n{[10 1] [2 3] [4 40] [1 1 2 2 2 5] 6 40 [1:41] [1:12]};\r\nassert(isequal(through_list(ans),0))\r\n%%\r\n{[-10:1:10] [2 3] [4 40] [1 1 2 2 2 5] 6 40 [1:41] [1:12]};\r\nassert(isequal(through_list(ans),0))\r\n%%\r\nassert(isequal(through_list({[-10:1:10] [2 3] [4 40] [1 1 2 2 2 5 100 1000 -100] 6 [5 40 200 210] [1:41] [10:52]}),1))\r\n%%\r\nassert(isequal(through_list({[-10:1:10] [2 3] [4 40] [1 1 2 2 2 5 100 1000 -100] 6 [5 40 200 210] [1:41] [10:52] 53 [1001 54] [1 2 3 4 5 55]}),1))\r\n","published":true,"deleted":false,"likes_count":3,"comments_count":2,"created_by":5390,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":45,"test_suite_updated_at":null,"rescore_all_solutions":false,"group_id":1,"created_at":"2016-04-07T19:19:21.000Z","updated_at":"2025-12-14T23:23:23.000Z","published_at":"2016-04-07T19:39:46.000Z","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\u003eA list of cells is given.\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\u003eReturn true if the elements of the list increase monotonically (each element is strictly larger than the previous). Return false otherwise.\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\u003eFor example : If list={1 2 3 4 5} =\u0026gt; the answer is YES (1-\u0026gt;2-\u0026gt;3-\u0026gt;4-\u0026gt;5)\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\u003eIf list={[1 2] 4 [4 5] 6} =\u0026gt; the answer is YES (1(or 2)-\u0026gt;4-\u0026gt;5-\u0026gt;6)\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\u003eBut if list={[1 2] 0 [4 5] 6} =\u0026gt; the answer is NO (1 or 2 are \u0026gt;0)\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\u003eEasy ?\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\u003eAnd a list like ... {[10 1] [2 3] [4 40] [1 1 2 2 2 5] 6 40 [1:41] [1:42]} ?\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\u003eGood luck !\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":960,"title":"Cell Source Index","description":"Suppose that C is a cell array whose elements consist of row vectors of elements of the same type.  For example, C could be a cell vector of strings:\r\n\r\n  C = {'abc' 'd' 'ef' 'ghij'};\r\n\r\nWe can put all the elements from all the vectors of C into a single vector:\r\n\r\n  VC = [C{:}];\r\n\r\nYour task:  write a function that returns a vector iC, where each element of iC holds the index of the element of C from which the corresponding element of VC came.  For example, if C has the value given above, then this would be the correct contents for iC:\r\n\r\n  iC = [1 1 1 2 3 3 4 4 4 4];\r\n\r\n","description_html":"\u003cp\u003eSuppose that C is a cell array whose elements consist of row vectors of elements of the same type.  For example, C could be a cell vector of strings:\u003c/p\u003e\u003cpre class=\"language-matlab\"\u003eC = {'abc' 'd' 'ef' 'ghij'};\r\n\u003c/pre\u003e\u003cp\u003eWe can put all the elements from all the vectors of C into a single vector:\u003c/p\u003e\u003cpre class=\"language-matlab\"\u003eVC = [C{:}];\r\n\u003c/pre\u003e\u003cp\u003eYour task:  write a function that returns a vector iC, where each element of iC holds the index of the element of C from which the corresponding element of VC came.  For example, if C has the value given above, then this would be the correct contents for iC:\u003c/p\u003e\u003cpre class=\"language-matlab\"\u003eiC = [1 1 1 2 3 3 4 4 4 4];\r\n\u003c/pre\u003e","function_template":"function iC = cellSourceIndex(C)\r\n  iC = [];\r\nend","test_suite":"%%\r\nC = {'abc' 'd' 'ef' 'ghij'};\r\niC = [1 1 1 2 3 3 4 4 4 4];\r\nassert(isequal(cellSourceIndex(C),iC))\r\n\r\n%%\r\nC = {[1 2 3] [] 1 [] 2};\r\niC = [1 1 1 3 5];\r\nassert(isequal(cellSourceIndex(C),iC))\r\n\r\n%%\r\nassert(isequal(cellSourceIndex(num2cell(ones(3))),1:9))\r\n\r\n%%\r\nassert(isequal(cellSourceIndex({[] [] [] 1}),4))\r\n\r\n%%\r\nassert(isempty(cellSourceIndex({})))\r\n\r\n%%\r\nC = {struct('a',{1 2},'b',[]),struct('c',{1 2}),struct('d',{5 6 7 8})};\r\niC = [1 1 2 2 3 3 3 3];\r\nassert(isequal(cellSourceIndex(C),iC))","published":true,"deleted":false,"likes_count":2,"comments_count":1,"created_by":3117,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":45,"test_suite_updated_at":null,"rescore_all_solutions":false,"group_id":1,"created_at":"2012-09-26T18:58:02.000Z","updated_at":"2026-03-31T10:53:41.000Z","published_at":"2012-09-26T18:58:02.000Z","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\u003eSuppose that C is a cell array whose elements consist of row vectors of elements of the same type. For example, C could be a cell vector of strings:\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[C = {'abc' 'd' 'ef' 'ghij'};]]\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\u003eWe can put all the elements from all the vectors of C into a single 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[VC = [C{:}];]]\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\u003eYour task: write a function that returns a vector iC, where each element of iC holds the index of the element of C from which the corresponding element of VC came. For example, if C has the value given above, then this would be the correct contents for iC:\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[iC = [1 1 1 2 3 3 4 4 4 4];]]\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":42797,"title":"Find the path through the cell","description":"A list of cells is given.\r\n\r\nReturn true if the elements of the list increase monotonically (each element is strictly larger than the previous). Return false otherwise.\r\n\r\nFor example :\r\nIf list={1 2 3 4 5} =\u003e the answer is YES (1-\u003e2-\u003e3-\u003e4-\u003e5)\r\n\r\nIf list={[1 2] 4 [4 5] 6} =\u003e the answer is YES (1(or 2)-\u003e4-\u003e5-\u003e6) \r\n\r\nBut if list={[1 2] 0 [4 5] 6} =\u003e the answer is NO (1 or 2 are \u003e0)\r\n\r\nEasy ?\r\n\r\nAnd a list like ... {[10 1] [2 3] [4 40] [1 1 2 2 2 5] 6 40 [1:41] [1:42]} ?\r\n\r\n\r\nGood luck !\r\n","description_html":"\u003cp\u003eA list of cells is given.\u003c/p\u003e\u003cp\u003eReturn true if the elements of the list increase monotonically (each element is strictly larger than the previous). Return false otherwise.\u003c/p\u003e\u003cp\u003eFor example :\r\nIf list={1 2 3 4 5} =\u0026gt; the answer is YES (1-\u0026gt;2-\u0026gt;3-\u0026gt;4-\u0026gt;5)\u003c/p\u003e\u003cp\u003eIf list={[1 2] 4 [4 5] 6} =\u0026gt; the answer is YES (1(or 2)-\u0026gt;4-\u0026gt;5-\u0026gt;6)\u003c/p\u003e\u003cp\u003eBut if list={[1 2] 0 [4 5] 6} =\u0026gt; the answer is NO (1 or 2 are \u0026gt;0)\u003c/p\u003e\u003cp\u003eEasy ?\u003c/p\u003e\u003cp\u003eAnd a list like ... {[10 1] [2 3] [4 40] [1 1 2 2 2 5] 6 40 [1:41] [1:42]} ?\u003c/p\u003e\u003cp\u003eGood luck !\u003c/p\u003e","function_template":"function y = through_list(x)\r\n  y = x;\r\nend","test_suite":"%%\r\nx = {1 2 3 4 5};\r\ny_correct=1;\r\nassert(isequal(through_list(x),y_correct))\r\n%%\r\nx = {1 2 3 4 5 6 7 8 9 10 9};\r\nassert(isequal(through_list(x),0))\r\n%%\r\nx = {0 1 2 3 4 5 [5 5 5 6]};\r\nassert(isequal(through_list(x),1))\r\n%%\r\nx = {[1 2] 4 [4 5] 6};\r\nassert(isequal(through_list(x),1))\r\n%%\r\nassert(isequal(through_list({[1 2] 0 [4 5] 6} ),0))\r\n%%\r\nx = {[-2 -2 0 1] 2 3 4 5};\r\nassert(isequal(through_list(x),1))\r\n%%\r\n{[10 1] [2 3] [4 40] [1 1 2 2 2 5] 6 40 [1:41] [1:42]};\r\nassert(isequal(through_list(ans),1))\r\n%%\r\n{[10 1] [2 3] [4 40] [1 1 2 2 2 5] 6 40 [1:41] [1:12]};\r\nassert(isequal(through_list(ans),0))\r\n%%\r\n{[-10:1:10] [2 3] [4 40] [1 1 2 2 2 5] 6 40 [1:41] [1:12]};\r\nassert(isequal(through_list(ans),0))\r\n%%\r\nassert(isequal(through_list({[-10:1:10] [2 3] [4 40] [1 1 2 2 2 5 100 1000 -100] 6 [5 40 200 210] [1:41] [10:52]}),1))\r\n%%\r\nassert(isequal(through_list({[-10:1:10] [2 3] [4 40] [1 1 2 2 2 5 100 1000 -100] 6 [5 40 200 210] [1:41] [10:52] 53 [1001 54] [1 2 3 4 5 55]}),1))\r\n","published":true,"deleted":false,"likes_count":3,"comments_count":2,"created_by":5390,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":45,"test_suite_updated_at":null,"rescore_all_solutions":false,"group_id":1,"created_at":"2016-04-07T19:19:21.000Z","updated_at":"2025-12-14T23:23:23.000Z","published_at":"2016-04-07T19:39:46.000Z","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\u003eA list of cells is given.\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\u003eReturn true if the elements of the list increase monotonically (each element is strictly larger than the previous). Return false otherwise.\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\u003eFor example : If list={1 2 3 4 5} =\u0026gt; the answer is YES (1-\u0026gt;2-\u0026gt;3-\u0026gt;4-\u0026gt;5)\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\u003eIf list={[1 2] 4 [4 5] 6} =\u0026gt; the answer is YES (1(or 2)-\u0026gt;4-\u0026gt;5-\u0026gt;6)\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\u003eBut if list={[1 2] 0 [4 5] 6} =\u0026gt; the answer is NO (1 or 2 are \u0026gt;0)\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\u003eEasy ?\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\u003eAnd a list like ... {[10 1] [2 3] [4 40] [1 1 2 2 2 5] 6 40 [1:41] [1:42]} ?\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\u003eGood luck !\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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