{"group":{"id":1,"name":"Community","lockable":false,"created_at":"2012-01-18T18:02:15.000Z","updated_at":"2026-05-26T00:16:20.000Z","description":"Problems submitted by members of the MATLAB Central community.","is_default":true,"created_by":161519,"badge_id":null,"featured":false,"trending":false,"solution_count_in_trending_period":0,"trending_last_calculated":"2026-05-26T00:00:00.000Z","image_id":null,"published":true,"community_created":false,"status_id":2,"is_default_group_for_player":false,"deleted_by":null,"deleted_at":null,"restored_by":null,"restored_at":null,"description_opc":null,"description_html":null,"published_at":null},"problems":[{"id":1986,"title":"Another colon problem","description":"This is simple problem based on problems 555, 801, 1118, etc.\r\n\r\nCreate an index vector from two input vectors.\r\n\r\nExample:\r\n\r\n  input: [1 8 12] [4 5 9]\r\n output: [1 2 3 4 8 7 6 5 12 11 10 9]","description_html":"\u003cp\u003eThis is simple problem based on problems 555, 801, 1118, etc.\u003c/p\u003e\u003cp\u003eCreate an index vector from two input vectors.\u003c/p\u003e\u003cp\u003eExample:\u003c/p\u003e\u003cpre class=\"language-matlab\"\u003einput: [1 8 12] [4 5 9]\r\noutput: [1 2 3 4 8 7 6 5 12 11 10 9]\r\n\u003c/pre\u003e","function_template":"function out = another(in1,in2)\r\n  out=in1:in2;\r\nend","test_suite":"%%\r\nassert(isequal(another([1 8 12],[4 5 9]),[1 2 3 4 8 7 6 5 12 11 10 9]))\r\n%%\r\nassert(isequal(another([5 5 5],[9 5 1]),[5 6 7 8 9 5 5 4 3 2 1]))\r\n%%\r\nassert(isequal(another([100 102],[-1 105]),[100:-1:-1 102 103 104 105]))\r\n%%\r\ny=[randi(20) randi([30 40],1,2) randi(3)];\r\nassert(isequal(another(y(1:2:3),y(2:2:4)),[y(1):y(2) y(3):-1:y(4)]))\r\n%%\r\nassert(isequal(another([1 2 1 2 2 2 1 1 1],[1 2 1 1 2 1 2 2 1]),[1 2 1 2 1 2 2 1 1 2 1 2 1]))","published":true,"deleted":false,"likes_count":3,"comments_count":1,"created_by":14358,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":167,"test_suite_updated_at":null,"rescore_all_solutions":false,"group_id":21,"created_at":"2013-11-13T12:47:02.000Z","updated_at":"2026-04-20T19:47:12.000Z","published_at":"2013-11-13T12:50:06.000Z","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\u003eThis is simple problem based on problems 555, 801, 1118, etc.\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\u003eCreate an index vector from two input vectors.\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[input: [1 8 12] [4 5 9]\\noutput: [1 2 3 4 8 7 6 5 12 11 10 9]]]\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":{"problems":[{"id":1986,"title":"Another colon problem","description":"This is simple problem based on problems 555, 801, 1118, etc.\r\n\r\nCreate an index vector from two input vectors.\r\n\r\nExample:\r\n\r\n  input: [1 8 12] [4 5 9]\r\n output: [1 2 3 4 8 7 6 5 12 11 10 9]","description_html":"\u003cp\u003eThis is simple problem based on problems 555, 801, 1118, etc.\u003c/p\u003e\u003cp\u003eCreate an index vector from two input vectors.\u003c/p\u003e\u003cp\u003eExample:\u003c/p\u003e\u003cpre class=\"language-matlab\"\u003einput: [1 8 12] [4 5 9]\r\noutput: [1 2 3 4 8 7 6 5 12 11 10 9]\r\n\u003c/pre\u003e","function_template":"function out = another(in1,in2)\r\n  out=in1:in2;\r\nend","test_suite":"%%\r\nassert(isequal(another([1 8 12],[4 5 9]),[1 2 3 4 8 7 6 5 12 11 10 9]))\r\n%%\r\nassert(isequal(another([5 5 5],[9 5 1]),[5 6 7 8 9 5 5 4 3 2 1]))\r\n%%\r\nassert(isequal(another([100 102],[-1 105]),[100:-1:-1 102 103 104 105]))\r\n%%\r\ny=[randi(20) randi([30 40],1,2) randi(3)];\r\nassert(isequal(another(y(1:2:3),y(2:2:4)),[y(1):y(2) y(3):-1:y(4)]))\r\n%%\r\nassert(isequal(another([1 2 1 2 2 2 1 1 1],[1 2 1 1 2 1 2 2 1]),[1 2 1 2 1 2 2 1 1 2 1 2 1]))","published":true,"deleted":false,"likes_count":3,"comments_count":1,"created_by":14358,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":167,"test_suite_updated_at":null,"rescore_all_solutions":false,"group_id":21,"created_at":"2013-11-13T12:47:02.000Z","updated_at":"2026-04-20T19:47:12.000Z","published_at":"2013-11-13T12:50:06.000Z","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\u003eThis is simple problem based on problems 555, 801, 1118, etc.\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\u003eCreate an index vector from two input vectors.\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[input: [1 8 12] [4 5 9]\\noutput: [1 2 3 4 8 7 6 5 12 11 10 9]]]\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\"}]}"}],"errors":[],"facets":[[{"value":"Indexing III","count":1,"selected":false}],[{"value":"medium","count":1,"selected":false}]],"term":"tag:\"555\"","page":1,"per_page":50,"sort":"map(difficulty_value,0,0,999) asc"}}