{"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":2133,"title":"Reverse Calculator","description":"Use this reverse calculator and give correct output\r\n\r\nIts simple, In my Reverse calculator if you press 0 it will be considered as 9. Likewise 1 will be 8, 2 will be 7, 3 will be 6,......., 9 will be 0.\r\n\r\nHere you will get two numbers and an operator(+ - * /). From this calculate the output.\r\n\r\nExample:\r\n\r\n Inputs:\r\nnumbers=[3 4], operator='+'\r\n\r\n Output:\r\nValue=11 (Because 3 will be considered as 6, 4 will be considered as 5. So 6+5=11)","description_html":"\u003cp\u003eUse this reverse calculator and give correct output\u003c/p\u003e\u003cp\u003eIts simple, In my Reverse calculator if you press 0 it will be considered as 9. Likewise 1 will be 8, 2 will be 7, 3 will be 6,......., 9 will be 0.\u003c/p\u003e\u003cp\u003eHere you will get two numbers and an operator(+ - * /). From this calculate the output.\u003c/p\u003e\u003cp\u003eExample:\u003c/p\u003e\u003cpre\u003e Inputs:\r\nnumbers=[3 4], operator='+'\u003c/pre\u003e\u003cpre\u003e Output:\r\nValue=11 (Because 3 will be considered as 6, 4 will be considered as 5. So 6+5=11)\u003c/pre\u003e","function_template":"function value = ReverseCalculator(numbers,operator)\r\n  value=0;\r\nend","test_suite":"%%\r\nnumbers=[9 8];\r\noperator='+';\r\nvalue=1;\r\nassert(isequal(ReverseCalculator(numbers,operator),value))\r\n\r\n%%\r\nnumbers=[7 2];\r\noperator='-';\r\nvalue=-5;\r\nassert(isequal(ReverseCalculator(numbers,operator),value))\r\n\r\n%%\r\nnumbers=[0 6];\r\noperator='/';\r\nvalue=3;\r\nassert(isequal(ReverseCalculator(numbers,operator),value))\r\n\r\n%%\r\nnumbers=[1 5];\r\noperator='*';\r\nvalue=32;\r\nassert(isequal(ReverseCalculator(numbers,operator),value))","published":true,"deleted":false,"likes_count":2,"comments_count":2,"created_by":13835,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":206,"test_suite_updated_at":"2014-01-25T07:25:45.000Z","rescore_all_solutions":false,"group_id":38,"created_at":"2014-01-25T07:17:02.000Z","updated_at":"2026-05-20T01:24:50.000Z","published_at":"2014-01-25T07:25:45.000Z","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\u003eUse this reverse calculator and give correct output\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\u003eIts simple, In my Reverse calculator if you press 0 it will be considered as 9. Likewise 1 will be 8, 2 will be 7, 3 will be 6,......., 9 will be 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\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eHere you will get two numbers and an operator(+ - * /). From this calculate the output.\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[ Inputs:\\nnumbers=[3 4], operator='+'\\n\\n Output:\\nValue=11 (Because 3 will be considered as 6, 4 will be considered as 5. So 6+5=11)]]\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":2133,"title":"Reverse Calculator","description":"Use this reverse calculator and give correct output\r\n\r\nIts simple, In my Reverse calculator if you press 0 it will be considered as 9. Likewise 1 will be 8, 2 will be 7, 3 will be 6,......., 9 will be 0.\r\n\r\nHere you will get two numbers and an operator(+ - * /). From this calculate the output.\r\n\r\nExample:\r\n\r\n Inputs:\r\nnumbers=[3 4], operator='+'\r\n\r\n Output:\r\nValue=11 (Because 3 will be considered as 6, 4 will be considered as 5. So 6+5=11)","description_html":"\u003cp\u003eUse this reverse calculator and give correct output\u003c/p\u003e\u003cp\u003eIts simple, In my Reverse calculator if you press 0 it will be considered as 9. Likewise 1 will be 8, 2 will be 7, 3 will be 6,......., 9 will be 0.\u003c/p\u003e\u003cp\u003eHere you will get two numbers and an operator(+ - * /). From this calculate the output.\u003c/p\u003e\u003cp\u003eExample:\u003c/p\u003e\u003cpre\u003e Inputs:\r\nnumbers=[3 4], operator='+'\u003c/pre\u003e\u003cpre\u003e Output:\r\nValue=11 (Because 3 will be considered as 6, 4 will be considered as 5. So 6+5=11)\u003c/pre\u003e","function_template":"function value = ReverseCalculator(numbers,operator)\r\n  value=0;\r\nend","test_suite":"%%\r\nnumbers=[9 8];\r\noperator='+';\r\nvalue=1;\r\nassert(isequal(ReverseCalculator(numbers,operator),value))\r\n\r\n%%\r\nnumbers=[7 2];\r\noperator='-';\r\nvalue=-5;\r\nassert(isequal(ReverseCalculator(numbers,operator),value))\r\n\r\n%%\r\nnumbers=[0 6];\r\noperator='/';\r\nvalue=3;\r\nassert(isequal(ReverseCalculator(numbers,operator),value))\r\n\r\n%%\r\nnumbers=[1 5];\r\noperator='*';\r\nvalue=32;\r\nassert(isequal(ReverseCalculator(numbers,operator),value))","published":true,"deleted":false,"likes_count":2,"comments_count":2,"created_by":13835,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":206,"test_suite_updated_at":"2014-01-25T07:25:45.000Z","rescore_all_solutions":false,"group_id":38,"created_at":"2014-01-25T07:17:02.000Z","updated_at":"2026-05-20T01:24:50.000Z","published_at":"2014-01-25T07:25:45.000Z","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\u003eUse this reverse calculator and give correct output\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\u003eIts simple, In my Reverse calculator if you press 0 it will be considered as 9. Likewise 1 will be 8, 2 will be 7, 3 will be 6,......., 9 will be 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\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eHere you will get two numbers and an operator(+ - * /). From this calculate the output.\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[ Inputs:\\nnumbers=[3 4], operator='+'\\n\\n Output:\\nValue=11 (Because 3 will be considered as 6, 4 will be considered as 5. So 6+5=11)]]\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":"Number Manipulation I","count":1,"selected":false}],[{"value":"medium","count":1,"selected":false}]],"term":"tag:\"reverse order number\"","page":1,"per_page":50,"sort":"map(difficulty_value,0,0,999) asc"}}