{"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":57795,"title":"Armstrong Number","description":"Write a function name armstrong_check that checks whether the given input is an Armstrong Number or not. It returns logical True or False.\r\nAn Armstrong number is one whose sum of digits raised to the power of the number of digits equals the number itself. For example, 371 is an Armstrong number because 3^3 + 7^3 + 1^3 = 371.\r\n","description_html":"\u003cdiv style = \"text-align: start; line-height: 20.440000534057617px; 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; white-space: normal; \"\u003e\u003cdiv style=\"block-size: 123px; display: block; min-width: 0px; padding-block-start: 0px; padding-top: 0px; vertical-align: baseline; \"\u003e\u003cdiv style=\"block-size: 42px; font-family: Helvetica, Arial, sans-serif; line-height: 21px; margin-block-end: 9px; margin-block-start: 2px; margin-bottom: 9px; margin-inline-end: 10px; margin-inline-start: 4px; margin-left: 4px; margin-right: 10px; margin-top: 2px; text-align: left; white-space: pre-wrap; margin-left: 4px; margin-top: 2px; margin-bottom: 9px; margin-right: 10px; \"\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; \"\u003e\u003cspan style=\"\"\u003eWrite a function name armstrong_check that checks whether the given input is an Armstrong Number or not. It returns logical True or False.\u003c/span\u003e\u003c/span\u003e\u003c/div\u003e\u003cdiv style=\"block-size: 42px; font-family: Helvetica, Arial, sans-serif; line-height: 21px; margin-block-end: 9px; margin-block-start: 2px; margin-bottom: 9px; margin-inline-end: 10px; margin-inline-start: 4px; margin-left: 4px; margin-right: 10px; margin-top: 2px; text-align: left; white-space: pre-wrap; margin-left: 4px; margin-top: 2px; margin-bottom: 9px; margin-right: 10px; \"\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; \"\u003e\u003cspan style=\"\"\u003eAn \u003c/span\u003e\u003c/span\u003e\u003ca target='_blank' href = \"https://web.archive.org/web/20171228054132/https://everything2.net/index.pl?node_id=1407017\u0026amp;displaytype=printable\u0026amp;lastnode_id=1407017\"\u003e\u003cspan style=\"\"\u003e\u003cspan style=\"\"\u003eArmstrong number\u003c/span\u003e\u003c/span\u003e\u003c/a\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; \"\u003e\u003cspan style=\"\"\u003e is one whose sum of digits raised to the power of the number of digits equals the number itself. For example, 371 is an Armstrong number because 3^3 + 7^3 + 1^3 = 371.\u003c/span\u003e\u003c/span\u003e\u003c/div\u003e\u003cdiv style=\"block-size: 21px; font-family: Helvetica, Arial, sans-serif; line-height: 21px; margin-block-end: 9px; margin-block-start: 2px; margin-bottom: 9px; margin-inline-end: 10px; margin-inline-start: 4px; margin-left: 4px; margin-right: 10px; margin-top: 2px; text-align: left; white-space: pre-wrap; margin-left: 4px; margin-top: 2px; margin-bottom: 9px; margin-right: 10px; \"\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; \"\u003e\u003cspan style=\"\"\u003e\u003c/span\u003e\u003c/span\u003e\u003c/div\u003e\u003c/div\u003e\u003c/div\u003e","function_template":"function out = armstrong_check(n)\r\n  out = n;\r\nend","test_suite":"%%\r\nn = 371;\r\nout_correct = true;\r\nassert(isequal(armstrong_check(n),out_correct))\r\n%%\r\nn = 21;\r\nout_correct = false;\r\nassert(isequal(armstrong_check(n),out_correct))\r\n%%\r\nn= 548834;\r\nout_correct = true;\r\nassert(isequal(armstrong_check(n),out_correct))\r\n%%\r\nn= 68955;\r\nout_correct = false;\r\nassert(isequal(armstrong_check(n),out_correct))\r\n%%\r\nn= 1741725;\r\nout_correct = true;\r\nassert(isequal(armstrong_check(n),out_correct))\r\n","published":true,"deleted":false,"likes_count":1,"comments_count":3,"created_by":2294940,"edited_by":26769,"edited_at":"2023-04-19T21:12:05.000Z","deleted_by":null,"deleted_at":null,"solvers_count":25,"test_suite_updated_at":null,"rescore_all_solutions":false,"group_id":1,"created_at":"2023-03-17T08:49:07.000Z","updated_at":"2026-02-05T05:42:50.000Z","published_at":"2023-03-17T08:49:07.000Z","restored_at":null,"restored_by":null,"spam":null,"simulink":false,"admin_reviewed":false,"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\u003eWrite a function name armstrong_check that checks whether the given input is an Armstrong Number or not. It returns logical True or False.\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\u003eAn \u003c/w:t\u003e\u003c/w:r\u003e\u003cw:hyperlink w:docLocation=\\\"https://web.archive.org/web/20171228054132/https://everything2.net/index.pl?node_id=1407017\u0026amp;displaytype=printable\u0026amp;lastnode_id=1407017\\\"\u003e\u003cw:r\u003e\u003cw:t\u003eArmstrong number\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:hyperlink\u003e\u003cw:r\u003e\u003cw:t\u003e is one whose sum of digits raised to the power of the number of digits equals the number itself. For example, 371 is an Armstrong number because 3^3 + 7^3 + 1^3 = 371.\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\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\"}]}"}],"problem_search":{"errors":[],"problems":[{"id":57795,"title":"Armstrong Number","description":"Write a function name armstrong_check that checks whether the given input is an Armstrong Number or not. It returns logical True or False.\r\nAn Armstrong number is one whose sum of digits raised to the power of the number of digits equals the number itself. For example, 371 is an Armstrong number because 3^3 + 7^3 + 1^3 = 371.\r\n","description_html":"\u003cdiv style = \"text-align: start; line-height: 20.440000534057617px; 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; white-space: normal; \"\u003e\u003cdiv style=\"block-size: 123px; display: block; min-width: 0px; padding-block-start: 0px; padding-top: 0px; vertical-align: baseline; \"\u003e\u003cdiv style=\"block-size: 42px; font-family: Helvetica, Arial, sans-serif; line-height: 21px; margin-block-end: 9px; margin-block-start: 2px; margin-bottom: 9px; margin-inline-end: 10px; margin-inline-start: 4px; margin-left: 4px; margin-right: 10px; margin-top: 2px; text-align: left; white-space: pre-wrap; margin-left: 4px; margin-top: 2px; margin-bottom: 9px; margin-right: 10px; \"\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; \"\u003e\u003cspan style=\"\"\u003eWrite a function name armstrong_check that checks whether the given input is an Armstrong Number or not. It returns logical True or False.\u003c/span\u003e\u003c/span\u003e\u003c/div\u003e\u003cdiv style=\"block-size: 42px; font-family: Helvetica, Arial, sans-serif; line-height: 21px; margin-block-end: 9px; margin-block-start: 2px; margin-bottom: 9px; margin-inline-end: 10px; margin-inline-start: 4px; margin-left: 4px; margin-right: 10px; margin-top: 2px; text-align: left; white-space: pre-wrap; margin-left: 4px; margin-top: 2px; margin-bottom: 9px; margin-right: 10px; \"\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; \"\u003e\u003cspan style=\"\"\u003eAn \u003c/span\u003e\u003c/span\u003e\u003ca target='_blank' href = \"https://web.archive.org/web/20171228054132/https://everything2.net/index.pl?node_id=1407017\u0026amp;displaytype=printable\u0026amp;lastnode_id=1407017\"\u003e\u003cspan style=\"\"\u003e\u003cspan style=\"\"\u003eArmstrong number\u003c/span\u003e\u003c/span\u003e\u003c/a\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; \"\u003e\u003cspan style=\"\"\u003e is one whose sum of digits raised to the power of the number of digits equals the number itself. For example, 371 is an Armstrong number because 3^3 + 7^3 + 1^3 = 371.\u003c/span\u003e\u003c/span\u003e\u003c/div\u003e\u003cdiv style=\"block-size: 21px; font-family: Helvetica, Arial, sans-serif; line-height: 21px; margin-block-end: 9px; margin-block-start: 2px; margin-bottom: 9px; margin-inline-end: 10px; margin-inline-start: 4px; margin-left: 4px; margin-right: 10px; margin-top: 2px; text-align: left; white-space: pre-wrap; margin-left: 4px; margin-top: 2px; margin-bottom: 9px; margin-right: 10px; \"\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; \"\u003e\u003cspan style=\"\"\u003e\u003c/span\u003e\u003c/span\u003e\u003c/div\u003e\u003c/div\u003e\u003c/div\u003e","function_template":"function out = armstrong_check(n)\r\n  out = n;\r\nend","test_suite":"%%\r\nn = 371;\r\nout_correct = true;\r\nassert(isequal(armstrong_check(n),out_correct))\r\n%%\r\nn = 21;\r\nout_correct = false;\r\nassert(isequal(armstrong_check(n),out_correct))\r\n%%\r\nn= 548834;\r\nout_correct = true;\r\nassert(isequal(armstrong_check(n),out_correct))\r\n%%\r\nn= 68955;\r\nout_correct = false;\r\nassert(isequal(armstrong_check(n),out_correct))\r\n%%\r\nn= 1741725;\r\nout_correct = true;\r\nassert(isequal(armstrong_check(n),out_correct))\r\n","published":true,"deleted":false,"likes_count":1,"comments_count":3,"created_by":2294940,"edited_by":26769,"edited_at":"2023-04-19T21:12:05.000Z","deleted_by":null,"deleted_at":null,"solvers_count":25,"test_suite_updated_at":null,"rescore_all_solutions":false,"group_id":1,"created_at":"2023-03-17T08:49:07.000Z","updated_at":"2026-02-05T05:42:50.000Z","published_at":"2023-03-17T08:49:07.000Z","restored_at":null,"restored_by":null,"spam":null,"simulink":false,"admin_reviewed":false,"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\u003eWrite a function name armstrong_check that checks whether the given input is an Armstrong Number or not. It returns logical True or False.\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\u003eAn \u003c/w:t\u003e\u003c/w:r\u003e\u003cw:hyperlink w:docLocation=\\\"https://web.archive.org/web/20171228054132/https://everything2.net/index.pl?node_id=1407017\u0026amp;displaytype=printable\u0026amp;lastnode_id=1407017\\\"\u003e\u003cw:r\u003e\u003cw:t\u003eArmstrong number\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:hyperlink\u003e\u003cw:r\u003e\u003cw:t\u003e is one whose sum of digits raised to the power of the number of digits equals the number itself. 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asc"},"parser":"MathWorks::Search::Solr::QueryParser","directives":{"term":{"directives":{"tag":[["tag:\"armstrong\"","","\"","armstrong","\""]]}}},"facets":{"#\u003cMathWorks::Search::Field:0x00007f6cd4340510\u003e":null,"#\u003cMathWorks::Search::Field:0x00007f6cd4340470\u003e":null},"filters":{"#\u003cMathWorks::Search::Field:0x00007f6cd437ee28\u003e":"\"cody:problem\""},"fields":{"#\u003cMathWorks::Search::Field:0x00007f6cd4340830\u003e":1,"#\u003cMathWorks::Search::Field:0x00007f6cd4340790\u003e":50,"#\u003cMathWorks::Search::Field:0x00007f6cd43406f0\u003e":"map(difficulty_value,0,0,999) asc","#\u003cMathWorks::Search::Field:0x00007f6cd4340650\u003e":"tag:\"armstrong\""},"user_query":{"#\u003cMathWorks::Search::Field:0x00007f6cd4340650\u003e":"tag:\"armstrong\""},"queried_facets":{}},"options":{"fields":["id","difficulty_rating"]},"join":" "},"results":[{"id":57795,"difficulty_rating":"easy-medium"}]}}