{"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":45272,"title":"Pseudo-vampire number ","description":"refer to \u003chttps://en.wikipedia.org/wiki/Vampire_number\u003e\r\nGiven a number x, determine whether it is a pseudo-vampire number.\r\nA pseudo-vampire number is similar to vampire numbers except -\r\nIt can be of any length unlike the vampire numbers which have even no of digits.\r\nIt can have n-number of fangs which need not to be of the same length unlike the vampire numbers which can have only two fangs.\r\nBut the fangs must contain precisely all the digits of the original number.","description_html":"\u003cdiv style = \"text-align: start; line-height: 20.4333px; 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: rgb(0, 0, 0); white-space: normal; \"\u003e\u003cdiv style=\"block-size: 172.733px; display: block; min-width: 0px; padding-block-start: 0px; padding-top: 0px; perspective-origin: 407px 86.3667px; transform-origin: 407px 86.3667px; vertical-align: baseline; \"\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: 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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; perspective-origin: 217px 8px; transform-origin: 217px 8px; unicode-bidi: normal; \"\u003e\u003cspan style=\"\"\u003eGiven a number x, determine whether it is a pseudo-vampire number.\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; perspective-origin: 384px 10.5px; text-align: left; transform-origin: 384px 10.5px; white-space: pre-wrap; margin-left: 4px; margin-top: 2px; margin-bottom: 9px; margin-right: 10px; 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56px; margin-top: 0px; perspective-origin: 363px 10.2167px; text-align: left; transform-origin: 363px 10.2167px; white-space: pre-wrap; margin-left: 56px; \"\u003e\u003cspan style=\"block-size: auto; display: inline; margin-inline-start: 0px; margin-left: 0px; perspective-origin: 252px 8px; transform-origin: 252px 8px; unicode-bidi: normal; \"\u003e\u003cspan style=\"\"\u003eIt can be of any length unlike the vampire numbers which have even no of digits.\u003c/span\u003e\u003c/span\u003e\u003c/li\u003e\u003cli style=\"block-size: 40.8667px; counter-reset: none; display: list-item; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-start: 56px; margin-left: 56px; margin-top: 0px; perspective-origin: 363px 20.4333px; text-align: left; transform-origin: 363px 20.4333px; white-space: pre-wrap; margin-left: 56px; \"\u003e\u003cspan style=\"block-size: auto; display: inline; margin-inline-start: 0px; margin-left: 0px; perspective-origin: 363px 8px; transform-origin: 363px 8px; unicode-bidi: normal; \"\u003e\u003cspan style=\"\"\u003eIt can have n-number of fangs which need not to be of the same length unlike the vampire numbers which can have only two fangs.\u003c/span\u003e\u003c/span\u003e\u003c/li\u003e\u003cli style=\"block-size: 20.4333px; counter-reset: none; display: list-item; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-start: 56px; margin-left: 56px; margin-top: 0px; perspective-origin: 363px 10.2167px; text-align: left; transform-origin: 363px 10.2167px; white-space: pre-wrap; margin-left: 56px; \"\u003e\u003cspan style=\"block-size: auto; display: inline; margin-inline-start: 0px; margin-left: 0px; perspective-origin: 226px 8px; transform-origin: 226px 8px; unicode-bidi: normal; \"\u003e\u003cspan style=\"\"\u003eBut the fangs must contain precisely all the digits of the original number.\u003c/span\u003e\u003c/span\u003e\u003c/li\u003e\u003c/ul\u003e\u003c/div\u003e\u003c/div\u003e","function_template":"function tf=pseudovampire(x)\r\n  y = x;\r\nend","test_suite":"%%\r\nx = 1;\r\ny_correct = 0;\r\nassert(isequal(pseudovampire(x),y_correct))\r\n%%\r\nx = 99;\r\ny_correct = 0;\r\nassert(isequal(pseudovampire(x),y_correct))\r\n%%\r\nx = 126;\r\ny_correct = 1;\r\nassert(isequal(pseudovampire(x),y_correct))\r\n%%\r\nx = 153;\r\ny_correct = 1;\r\nassert(isequal(pseudovampire(x),y_correct))\r\n%%\r\nx = 688;\r\ny_correct = 1;\r\nassert(isequal(pseudovampire(x),y_correct))\r\n%%\r\nx = 1010;\r\ny_correct = 0;\r\nassert(isequal(pseudovampire(x),y_correct))\r\n%%\r\nx = 1206;\r\ny_correct = 1;\r\nassert(isequal(pseudovampire(x),y_correct))\r\n%%\r\nx = 4545;\r\ny_correct = 0;\r\nassert(isequal(pseudovampire(x),y_correct))\r\n%%\r\nx = 6880;\r\ny_correct = 1;\r\nassert(isequal(pseudovampire(x),y_correct))\r\n%%\r\nx = 6969;\r\ny_correct = 0;\r\nassert(isequal(pseudovampire(x),y_correct))\r\n%%\r\nx = 12760;\r\ny_correct = 0;\r\nassert(isequal(pseudovampire(x),y_correct))\r\n%%\r\nx = 12768;\r\ny_correct = 1;\r\nassert(isequal(pseudovampire(x),y_correct))\r\n%%\r\nx = 11439;\r\ny_correct = 1;\r\nassert(isequal(pseudovampire(x),y_correct))\r\n%%\r\nx = 27040;\r\ny_correct = 0;\r\nassert(isequal(pseudovampire(x),y_correct))\r\n%%\r\nx = 52652;\r\ny_correct = 0;\r\nassert(isequal(pseudovampire(x),y_correct))\r\n%%\r\nx = 146137;\r\ny_correct = 1;\r\nassert(isequal(pseudovampire(x),y_correct))\r\n%%\r\nx = 13078260;\r\ny_correct = 1;\r\nassert(isequal(pseudovampire(x),y_correct))\r\n\r\n\r\n","published":true,"deleted":false,"likes_count":2,"comments_count":0,"created_by":363598,"edited_by":223089,"edited_at":"2022-11-17T06:54:39.000Z","deleted_by":null,"deleted_at":null,"solvers_count":31,"test_suite_updated_at":"2022-11-17T06:54:39.000Z","rescore_all_solutions":false,"group_id":1,"created_at":"2020-01-19T07:32:26.000Z","updated_at":"2026-01-10T14:17:44.000Z","published_at":"2020-01-19T07:33:58.000Z","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 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-\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"ListParagraph\\\"/\u003e\u003cw:numPr\u003e\u003cw:numId w:val=\\\"1\\\"/\u003e\u003c/w:numPr\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eIt can be of any length unlike the vampire numbers which have even no of digits.\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"ListParagraph\\\"/\u003e\u003cw:numPr\u003e\u003cw:numId w:val=\\\"1\\\"/\u003e\u003c/w:numPr\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eIt can have n-number of fangs which need not to be of the same length unlike the vampire numbers which can have only two fangs.\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"ListParagraph\\\"/\u003e\u003cw:numPr\u003e\u003cw:numId w:val=\\\"1\\\"/\u003e\u003c/w:numPr\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eBut the fangs must contain precisely all the digits of the original number.\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\"}]}"},{"id":45274,"title":"Fangs of pseudo-vampire number","description":"given a number, find all the fangs of that number.\r\n\r\nA pseudo-vampire number can have multiple of fangs. The output should be a cell containing all the pairs of possible fangs.\r\n\r\nFor example, 126 is a pseudo-vampire number whose fangs are - { '6' , '21' }\r\n\r\n* 126 = 6*21\r\n* 6 and 21 contains the digits of the original number.\r\n\r\n\u003chttps://en.wikipedia.org/wiki/Vampire_number\u003e","description_html":"\u003cp\u003egiven a number, find all the fangs of that number.\u003c/p\u003e\u003cp\u003eA pseudo-vampire number can have multiple of fangs. The output should be a cell containing all the pairs of possible fangs.\u003c/p\u003e\u003cp\u003eFor example, 126 is a pseudo-vampire number whose fangs are - { '6' , '21' }\u003c/p\u003e\u003cul\u003e\u003cli\u003e126 = 6*21\u003c/li\u003e\u003cli\u003e6 and 21 contains the digits of the original number.\u003c/li\u003e\u003c/ul\u003e\u003cp\u003e\u003ca href = \"https://en.wikipedia.org/wiki/Vampire_number\"\u003ehttps://en.wikipedia.org/wiki/Vampire_number\u003c/a\u003e\u003c/p\u003e","function_template":"function y = pseudovampire_fangs(x)\r\n  y = x;\r\nend","test_suite":"%%\r\nx = 126;\r\ny_correct = { '6' , '21' };\r\nassert(isequal(pseudovampire_fangs(x),y_correct))\r\n%%\r\nx = 153;\r\ny_correct = { '3' , '51' };\r\nassert(isequal(pseudovampire_fangs(x),y_correct))\r\n%%\r\nx = 1395;\r\ny_correct = { {'15' , '93'},{'5','9','31'} };\r\nassert(isequal(pseudovampire_fangs(x),y_correct))\r\n%%\r\nx = 12768;\r\ny_correct = { '8' , '21' ,'76'};\r\nassert(isequal(pseudovampire_fangs(x),y_correct))\r\n%%\r\nx = 11439;\r\ny_correct = { '9' , '31','41' };\r\nassert(isequal(pseudovampire_fangs(x),y_correct))\r\n%%\r\nx = 146137;\r\ny_correct = { '317' , '461' };\r\nassert(isequal(pseudovampire_fangs(x),y_correct))\r\n%%\r\nx = 1206;\r\ny_correct = { '6' , '201' };\r\nassert(isequal(pseudovampire_fangs(x),y_correct))\r\n%%\r\n%x = 1260;\r\n%y_correct = { {'6' , '210'},{'21','60'} };\r\n%assert(isequal(pseudovampire_fangs(x),y_correct))","published":true,"deleted":false,"likes_count":2,"comments_count":1,"created_by":363598,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":25,"test_suite_updated_at":"2020-01-21T17:14:07.000Z","rescore_all_solutions":false,"group_id":1,"created_at":"2020-01-21T13:45:52.000Z","updated_at":"2026-01-02T18:19:18.000Z","published_at":"2020-01-21T17:14:07.000Z","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\",\"targetMode\":\"\",\"relationshipId\":\"rId1\",\"target\":\"/matlab/document.xml\"},{\"relationshipType\":\"http://schemas.mathworks.com/matlab/code/2013/relationships/output\",\"targetMode\":\"\",\"relationshipId\":\"rId2\",\"target\":\"/matlab/output.xml\"}],\"parts\":[{\"partUri\":\"/matlab/document.xml\",\"relationship\":[],\"contentType\":\"application/vnd.mathworks.matlab.code.document+xml\",\"content\":\"\u003c?xml version=\\\"1.0\\\" encoding=\\\"UTF-8\\\"?\u003e\\n\u003cw:document xmlns:w=\\\"http://schemas.openxmlformats.org/wordprocessingml/2006/main\\\"\u003e\u003cw:body\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003egiven a number, find all the fangs of that number.\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\u003eA pseudo-vampire number can have multiple of fangs. The output should be a cell containing all the pairs of possible fangs.\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\u003eFor example, 126 is a pseudo-vampire number whose fangs are - { '6' , '21' }\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"ListParagraph\\\"/\u003e\u003cw:numPr\u003e\u003cw:numId w:val=\\\"1\\\"/\u003e\u003c/w:numPr\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003e126 = 6*21\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"ListParagraph\\\"/\u003e\u003cw:numPr\u003e\u003cw:numId w:val=\\\"1\\\"/\u003e\u003c/w:numPr\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003e6 and 21 contains the digits of the original number.\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:hyperlink w:docLocation=\\\"https://en.wikipedia.org/wiki/Vampire_number\\\"\u003e\u003cw:r\u003e\u003cw:t\u003e\u0026lt;https://en.wikipedia.org/wiki/Vampire_number\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:hyperlink\u003e\u003cw:r\u003e\u003cw:t\u003e\u0026gt;\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 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style=\"\"\u003e\u0026gt;\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; perspective-origin: 384px 10.5px; text-align: left; transform-origin: 384px 10.5px; 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; perspective-origin: 217px 8px; transform-origin: 217px 8px; unicode-bidi: normal; \"\u003e\u003cspan style=\"\"\u003eGiven a number x, determine whether it is a pseudo-vampire number.\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; perspective-origin: 384px 10.5px; text-align: left; transform-origin: 384px 10.5px; 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; perspective-origin: 204px 8px; transform-origin: 204px 8px; unicode-bidi: normal; \"\u003e\u003cspan style=\"\"\u003eA pseudo-vampire number is similar to vampire numbers except -\u003c/span\u003e\u003c/span\u003e\u003c/div\u003e\u003cul 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digits.\u003c/span\u003e\u003c/span\u003e\u003c/li\u003e\u003cli style=\"block-size: 40.8667px; counter-reset: none; display: list-item; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-start: 56px; margin-left: 56px; margin-top: 0px; perspective-origin: 363px 20.4333px; text-align: left; transform-origin: 363px 20.4333px; white-space: pre-wrap; margin-left: 56px; \"\u003e\u003cspan style=\"block-size: auto; display: inline; margin-inline-start: 0px; margin-left: 0px; perspective-origin: 363px 8px; transform-origin: 363px 8px; unicode-bidi: normal; \"\u003e\u003cspan style=\"\"\u003eIt can have n-number of fangs which need not to be of the same length unlike the vampire numbers which can have only two fangs.\u003c/span\u003e\u003c/span\u003e\u003c/li\u003e\u003cli style=\"block-size: 20.4333px; counter-reset: none; display: list-item; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-start: 56px; margin-left: 56px; margin-top: 0px; perspective-origin: 363px 10.2167px; text-align: left; transform-origin: 363px 10.2167px; white-space: pre-wrap; margin-left: 56px; \"\u003e\u003cspan style=\"block-size: auto; display: inline; margin-inline-start: 0px; margin-left: 0px; perspective-origin: 226px 8px; transform-origin: 226px 8px; unicode-bidi: normal; \"\u003e\u003cspan style=\"\"\u003eBut the fangs must contain precisely all the digits of the original number.\u003c/span\u003e\u003c/span\u003e\u003c/li\u003e\u003c/ul\u003e\u003c/div\u003e\u003c/div\u003e","function_template":"function tf=pseudovampire(x)\r\n  y = x;\r\nend","test_suite":"%%\r\nx = 1;\r\ny_correct = 0;\r\nassert(isequal(pseudovampire(x),y_correct))\r\n%%\r\nx = 99;\r\ny_correct = 0;\r\nassert(isequal(pseudovampire(x),y_correct))\r\n%%\r\nx = 126;\r\ny_correct = 1;\r\nassert(isequal(pseudovampire(x),y_correct))\r\n%%\r\nx = 153;\r\ny_correct = 1;\r\nassert(isequal(pseudovampire(x),y_correct))\r\n%%\r\nx = 688;\r\ny_correct = 1;\r\nassert(isequal(pseudovampire(x),y_correct))\r\n%%\r\nx = 1010;\r\ny_correct = 0;\r\nassert(isequal(pseudovampire(x),y_correct))\r\n%%\r\nx = 1206;\r\ny_correct = 1;\r\nassert(isequal(pseudovampire(x),y_correct))\r\n%%\r\nx = 4545;\r\ny_correct = 0;\r\nassert(isequal(pseudovampire(x),y_correct))\r\n%%\r\nx = 6880;\r\ny_correct = 1;\r\nassert(isequal(pseudovampire(x),y_correct))\r\n%%\r\nx = 6969;\r\ny_correct = 0;\r\nassert(isequal(pseudovampire(x),y_correct))\r\n%%\r\nx = 12760;\r\ny_correct = 0;\r\nassert(isequal(pseudovampire(x),y_correct))\r\n%%\r\nx = 12768;\r\ny_correct = 1;\r\nassert(isequal(pseudovampire(x),y_correct))\r\n%%\r\nx = 11439;\r\ny_correct = 1;\r\nassert(isequal(pseudovampire(x),y_correct))\r\n%%\r\nx = 27040;\r\ny_correct = 0;\r\nassert(isequal(pseudovampire(x),y_correct))\r\n%%\r\nx = 52652;\r\ny_correct = 0;\r\nassert(isequal(pseudovampire(x),y_correct))\r\n%%\r\nx = 146137;\r\ny_correct = 1;\r\nassert(isequal(pseudovampire(x),y_correct))\r\n%%\r\nx = 13078260;\r\ny_correct = 1;\r\nassert(isequal(pseudovampire(x),y_correct))\r\n\r\n\r\n","published":true,"deleted":false,"likes_count":2,"comments_count":0,"created_by":363598,"edited_by":223089,"edited_at":"2022-11-17T06:54:39.000Z","deleted_by":null,"deleted_at":null,"solvers_count":31,"test_suite_updated_at":"2022-11-17T06:54:39.000Z","rescore_all_solutions":false,"group_id":1,"created_at":"2020-01-19T07:32:26.000Z","updated_at":"2026-01-10T14:17:44.000Z","published_at":"2020-01-19T07:33:58.000Z","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\u003erefer to\u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:t\u003e \u003c/w:t\u003e\u003c/w:r\u003e\u003cw:hyperlink w:docLocation=\\\"https://en.wikipedia.org/wiki/Vampire_number\\\"\u003e\u003cw:r\u003e\u003cw:t\u003e\u0026lt;https://en.wikipedia.org/wiki/Vampire_number\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:hyperlink\u003e\u003cw:r\u003e\u003cw:t\u003e\u0026gt;\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\u003eGiven a number x, determine whether it is a pseudo-vampire number.\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\u003eA pseudo-vampire number is similar to vampire numbers except -\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"ListParagraph\\\"/\u003e\u003cw:numPr\u003e\u003cw:numId w:val=\\\"1\\\"/\u003e\u003c/w:numPr\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eIt can be of any length unlike the vampire numbers which have even no of digits.\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"ListParagraph\\\"/\u003e\u003cw:numPr\u003e\u003cw:numId w:val=\\\"1\\\"/\u003e\u003c/w:numPr\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eIt can have n-number of fangs which need not to be of the same length unlike the vampire numbers which can have only two fangs.\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"ListParagraph\\\"/\u003e\u003cw:numPr\u003e\u003cw:numId w:val=\\\"1\\\"/\u003e\u003c/w:numPr\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eBut the fangs must contain precisely all the digits of the original number.\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\"}]}"},{"id":45274,"title":"Fangs of pseudo-vampire number","description":"given a number, find all the fangs of that number.\r\n\r\nA pseudo-vampire number can have multiple of fangs. The output should be a cell containing all the pairs of possible fangs.\r\n\r\nFor example, 126 is a pseudo-vampire number whose fangs are - { '6' , '21' }\r\n\r\n* 126 = 6*21\r\n* 6 and 21 contains the digits of the original number.\r\n\r\n\u003chttps://en.wikipedia.org/wiki/Vampire_number\u003e","description_html":"\u003cp\u003egiven a number, find all the fangs of that number.\u003c/p\u003e\u003cp\u003eA pseudo-vampire number can have multiple of fangs. The output should be a cell containing all the pairs of possible fangs.\u003c/p\u003e\u003cp\u003eFor example, 126 is a pseudo-vampire number whose fangs are - { '6' , '21' }\u003c/p\u003e\u003cul\u003e\u003cli\u003e126 = 6*21\u003c/li\u003e\u003cli\u003e6 and 21 contains the digits of the original number.\u003c/li\u003e\u003c/ul\u003e\u003cp\u003e\u003ca href = \"https://en.wikipedia.org/wiki/Vampire_number\"\u003ehttps://en.wikipedia.org/wiki/Vampire_number\u003c/a\u003e\u003c/p\u003e","function_template":"function y = pseudovampire_fangs(x)\r\n  y = x;\r\nend","test_suite":"%%\r\nx = 126;\r\ny_correct = { '6' , '21' };\r\nassert(isequal(pseudovampire_fangs(x),y_correct))\r\n%%\r\nx = 153;\r\ny_correct = { '3' , '51' };\r\nassert(isequal(pseudovampire_fangs(x),y_correct))\r\n%%\r\nx = 1395;\r\ny_correct = { {'15' , '93'},{'5','9','31'} };\r\nassert(isequal(pseudovampire_fangs(x),y_correct))\r\n%%\r\nx = 12768;\r\ny_correct = { '8' , '21' ,'76'};\r\nassert(isequal(pseudovampire_fangs(x),y_correct))\r\n%%\r\nx = 11439;\r\ny_correct = { '9' , '31','41' };\r\nassert(isequal(pseudovampire_fangs(x),y_correct))\r\n%%\r\nx = 146137;\r\ny_correct = { '317' , '461' };\r\nassert(isequal(pseudovampire_fangs(x),y_correct))\r\n%%\r\nx = 1206;\r\ny_correct = { '6' , '201' };\r\nassert(isequal(pseudovampire_fangs(x),y_correct))\r\n%%\r\n%x = 1260;\r\n%y_correct = { {'6' , '210'},{'21','60'} };\r\n%assert(isequal(pseudovampire_fangs(x),y_correct))","published":true,"deleted":false,"likes_count":2,"comments_count":1,"created_by":363598,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":25,"test_suite_updated_at":"2020-01-21T17:14:07.000Z","rescore_all_solutions":false,"group_id":1,"created_at":"2020-01-21T13:45:52.000Z","updated_at":"2026-01-02T18:19:18.000Z","published_at":"2020-01-21T17:14:07.000Z","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\",\"targetMode\":\"\",\"relationshipId\":\"rId1\",\"target\":\"/matlab/document.xml\"},{\"relationshipType\":\"http://schemas.mathworks.com/matlab/code/2013/relationships/output\",\"targetMode\":\"\",\"relationshipId\":\"rId2\",\"target\":\"/matlab/output.xml\"}],\"parts\":[{\"partUri\":\"/matlab/document.xml\",\"relationship\":[],\"contentType\":\"application/vnd.mathworks.matlab.code.document+xml\",\"content\":\"\u003c?xml version=\\\"1.0\\\" encoding=\\\"UTF-8\\\"?\u003e\\n\u003cw:document xmlns:w=\\\"http://schemas.openxmlformats.org/wordprocessingml/2006/main\\\"\u003e\u003cw:body\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003egiven a number, find all the fangs of that number.\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\u003eA pseudo-vampire number can have multiple of fangs. The output should be a cell containing all the pairs of possible fangs.\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\u003eFor example, 126 is a pseudo-vampire number whose fangs are - { '6' , '21' }\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"ListParagraph\\\"/\u003e\u003cw:numPr\u003e\u003cw:numId w:val=\\\"1\\\"/\u003e\u003c/w:numPr\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003e126 = 6*21\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"ListParagraph\\\"/\u003e\u003cw:numPr\u003e\u003cw:numId w:val=\\\"1\\\"/\u003e\u003c/w:numPr\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003e6 and 21 contains the digits of the original number.\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle 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