{"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":2453,"title":"Product of elements in row","description":"Product of matrix such that\r\n\r\n a=[3 3 1]\r\n b=9","description_html":"\u003cp\u003eProduct of matrix such that\u003c/p\u003e\u003cpre\u003e a=[3 3 1]\r\n b=9\u003c/pre\u003e","function_template":"function a = prodOfMatrix(b)\r\n  b=b;\r\nend","test_suite":"%%\r\nb=[2 3 4];\r\na=24;\r\nassert(isequal(prodOfMatrix(b),a))\r\n%%\r\nb=[1 2 4];\r\na=8;\r\nassert(isequal(prodOfMatrix(b),a))\r\n%%\r\nb=[9 5 4];\r\na=180;\r\nassert(isequal(prodOfMatrix(b),a))","published":true,"deleted":false,"likes_count":2,"comments_count":3,"created_by":26670,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":295,"test_suite_updated_at":"2014-07-21T15:37:18.000Z","rescore_all_solutions":true,"group_id":1,"created_at":"2014-07-20T06:39:41.000Z","updated_at":"2026-03-05T11:37:50.000Z","published_at":"2014-07-20T06:43:33.000Z","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\u003eProduct of matrix such that\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[ a=[3 3 1]\\n b=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\"}]}"},{"id":44699,"title":"Prime Product","description":"My professor has given a sequence of N numbers as a1, a2, ..., aN and asked me to find the smallest possible value of ai * aj such that it is a prime number, where 1 \u003c= i \u003c j \u003c= N.\r\n\r\nIf it's possible to find any value of ai * aj such that it is a prime number, then print the smallest value of such ai * aj, otherwise print -1.\r\n\r\n  x=[1 2 3]\r\ny = 2\r\n\r\n\r\n  x=[5 5 5 2]\r\ny = -1\r\n","description_html":"\u003cp\u003eMy professor has given a sequence of N numbers as a1, a2, ..., aN and asked me to find the smallest possible value of ai * aj such that it is a prime number, where 1 \u0026lt;= i \u0026lt; j \u0026lt;= N.\u003c/p\u003e\u003cp\u003eIf it's possible to find any value of ai * aj such that it is a prime number, then print the smallest value of such ai * aj, otherwise print -1.\u003c/p\u003e\u003cpre class=\"language-matlab\"\u003ex=[1 2 3]\r\ny = 2\r\n\u003c/pre\u003e\u003cpre class=\"language-matlab\"\u003ex=[5 5 5 2]\r\ny = -1\r\n\u003c/pre\u003e","function_template":"function y = prime_product(x)\r\n  % my first problem I created\r\nend","test_suite":"%%\r\nx = [1 2 3];\r\ny_correct = 2;\r\nassert(isequal(prime_product(x),y_correct))\r\n\r\n%%\r\nx = [5 2 5 2];\r\ny_correct = -1;\r\nassert(isequal(prime_product(x),y_correct))\r\n\r\n%%\r\nx = [1 63];\r\ny_correct = -1;\r\nassert(isequal(prime_product(x),y_correct))\r\n\r\n%% \r\nx = [ 3 6 234 1 623 234 ];\r\ny_correct = 3;\r\nassert(isequal(prime_product(x),y_correct))","published":true,"deleted":false,"likes_count":1,"comments_count":0,"created_by":195572,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":34,"test_suite_updated_at":"2018-07-30T18:29:12.000Z","rescore_all_solutions":true,"group_id":1,"created_at":"2018-07-18T20:13:31.000Z","updated_at":"2025-12-09T15:21:32.000Z","published_at":"2018-07-18T20:40:31.000Z","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\u003eMy professor has given a sequence of N numbers as a1, a2, ..., aN and asked me to find the smallest possible value of ai * aj such that it is a prime number, where 1 \u0026lt;= i \u0026lt; j \u0026lt;= N.\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\u003eIf it's possible to find any value of ai * aj such that it is a prime number, then print the smallest value of such ai * aj, otherwise print -1.\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[x=[1 2 3]\\ny = 2\\n\\nx=[5 5 5 2]\\ny = -1]]\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":55515,"title":"Find the remainder - 01","description":"Given an array of integers, find the remainder when the product of all the elements is divided by N","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: 21px; display: block; min-width: 0px; padding-block-start: 0px; padding-top: 0px; perspective-origin: 407px 10.5px; transform-origin: 407px 10.5px; vertical-align: baseline; \"\u003e\u003cdiv style=\"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; 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Will you take up the challenge?!\r\n\r\nExample :\r\nx= 3;\r\ny= 2;\r\n\r\noutput = 6 since 3*2 = 6 :)","description_html":"\u003cp\u003eVery easy, you just have to multiply 2 numbers\r\nbut you cannot use the  following signs (*, /, - ,^) ,mtimes , times, cross, prod, cumprod , dec2bin, int2str and num2str functions. Will you take up the challenge?!\u003c/p\u003e\u003cp\u003eExample :\r\nx= 3;\r\ny= 2;\u003c/p\u003e\u003cp\u003eoutput = 6 since 3*2 = 6 :)\u003c/p\u003e","function_template":"function output = your_fcn_name(x,y)\r\n  y = x*y;\r\nend","test_suite":"%%\r\nx = 1;\r\ny =2;\r\ny_correct = 2;\r\nassert(isequal(round(your_fcn_name(x,y)),y_correct))\r\nfiletext = fileread('your_fcn_name.m');\r\nassert(isempty(strfind(filetext, '*')),'sign * forbidden')\r\nassert(isempty(strfind(filetext, 'mtimes')),'mtimes forbidden')\r\nassert(isempty(strfind(filetext, 'cross')),'cross forbidden')\r\nassert(isempty(strfind(filetext, 'prod')),'prod forbidden')\r\nassert(isempty(strfind(filetext, 'cumprod')))\r\nassert(isempty(strfind(filetext, 'times')))\r\nassert(isempty(strfind(filetext, 'mldivide')))\r\nassert(isempty(strfind(filetext, 'mrdivide')))\r\nassert(isempty(strfind(filetext, '/')),'/ forbidden')\r\nassert(isempty(strfind(filetext, '\\')))\r\nassert(isempty(strfind(filetext, '-')))\r\nassert(isempty(strfind(filetext, '^')),'^ forbidden')\r\nassert(isempty(strfind(filetext, 'dot')))\r\nassert(isempty(strfind(filetext, '''')),'string forbidden')\r\n\r\n%%\r\nx = 8;\r\ny =25;\r\ny_correct = 200;\r\nassert(isequal(round(your_fcn_name(x,y)),y_correct))\r\nfiletext = fileread('your_fcn_name.m');\r\nassert(isempty(strfind(filetext, '*')))\r\nassert(isempty(strfind(filetext, 'mtimes')))\r\nassert(isempty(strfind(filetext, 'cross')))\r\nassert(isempty(strfind(filetext, 'prod')))\r\nassert(isempty(strfind(filetext, 'cumprod')))\r\nassert(isempty(strfind(filetext, 'times')))\r\nassert(isempty(strfind(filetext, 'dot')))\r\n\r\n%%\r\nx = 8;\r\ny =0;\r\ny_correct = 0;\r\nassert(isequal(round(your_fcn_name(x,y)),y_correct))\r\nfiletext = fileread('your_fcn_name.m');\r\nassert(isempty(strfind(filetext, '*')))\r\nassert(isempty(strfind(filetext, 'mtimes')))\r\nassert(isempty(strfind(filetext, 'cross')))\r\nassert(isempty(strfind(filetext, 'prod')))\r\nassert(isempty(strfind(filetext, 'cumprod')))\r\nassert(isempty(strfind(filetext, 'times')))\r\nassert(isempty(strfind(filetext, 'dot')))\r\n\r\n\r\n%%\r\nx = -148;\r\ny =2865;\r\ny_correct = -424020;\r\nassert(isequal(round(your_fcn_name(x,y)),y_correct))\r\nfiletext = fileread('your_fcn_name.m');\r\nassert(isempty(strfind(filetext, '*')))\r\nassert(isempty(strfind(filetext, 'mtimes')))\r\nassert(isempty(strfind(filetext, 'cross')))\r\nassert(isempty(strfind(filetext, 'prod')))\r\nassert(isempty(strfind(filetext, 'cumprod')))\r\nassert(isempty(strfind(filetext, 'times')))\r\nassert(isempty(strfind(filetext, 'dot')))\r\n\r\n%% Test 5 : randi!!\r\nx = randi([1 58]);\r\ny =286.5;\r\ny_correct = x*y;\r\nassert(abs( your_fcn_name(x,y)-y_correct)\u003c1e-9)\r\nfiletext = fileread('your_fcn_name.m');\r\nassert(isempty(strfind(filetext, '*')))\r\nassert(isempty(strfind(filetext, 'mtimes')))\r\nassert(isempty(strfind(filetext, 'cross')))\r\nassert(isempty(strfind(filetext, 'prod')))\r\nassert(isempty(strfind(filetext, 'cumprod')))\r\nassert(isempty(strfind(filetext, 'times')))\r\nassert(isempty(strfind(filetext, 'dot')))\r\n\r\n\r\n%% Test 6 : randi and pi !!\r\nx = randi([14 580]);\r\ny = -pi;\r\ny_correct = x*y;\r\nassert(abs( your_fcn_name(x,y)-y_correct)\u003c1e-9)\r\n\r\nfiletext = fileread('your_fcn_name.m');\r\nassert(isempty(strfind(filetext, '*')))\r\nassert(isempty(strfind(filetext, 'mtimes')))\r\nassert(isempty(strfind(filetext, 'cross')))\r\nassert(isempty(strfind(filetext, 'prod')))\r\nassert(isempty(strfind(filetext, 'cumprod')))\r\nassert(isempty(strfind(filetext, 'times')))\r\nassert(isempty(strfind(filetext, 'dot')))\r\nassert(isempty(strfind(filetext, 'num2str')))\r\nassert(isempty(strfind(filetext, 'int2str')))\r\nassert(isempty(strfind(filetext, 'dec2bin')))\r\n","published":true,"deleted":false,"likes_count":21,"comments_count":4,"created_by":639,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":348,"test_suite_updated_at":"2012-07-10T12:45:28.000Z","rescore_all_solutions":false,"group_id":1,"created_at":"2012-07-04T09:34:18.000Z","updated_at":"2026-03-28T02:08:05.000Z","published_at":"2012-07-04T09:34:18.000Z","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\u003eVery easy, you just have to multiply 2 numbers but you cannot use the following signs (*, /, - ,^) ,mtimes , times, cross, prod, cumprod , dec2bin, int2str and num2str functions. Will you take up the challenge?!\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\u003eExample : x= 3; y= 2;\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\u003eoutput = 6 since 3*2 = 6 :)\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":42985,"title":"Vector multiplication","description":"Given two row vectors, v1 and v2, each representing an integer, such that the vector elements are the digits from left to right, return a row vector v3, of the same format, that represents the product of the integers represented by v1 and v2.\r\n\r\nExample 1:\r\n\r\nv1 = [1 2]\r\n\r\nv2 = [5 0 0]\r\n\r\nv3 = [6 0 0 0]\r\n\r\nExample 2:\r\n\r\nv1 = [9 9]\r\n\r\nv2 = [9 9]\r\n\r\nv3 = [9 8 0 1]","description_html":"\u003cp\u003eGiven two row vectors, v1 and v2, each representing an integer, such that the vector elements are the digits from left to right, return a row vector v3, of the same format, that represents the product of the integers represented by v1 and v2.\u003c/p\u003e\u003cp\u003eExample 1:\u003c/p\u003e\u003cp\u003ev1 = [1 2]\u003c/p\u003e\u003cp\u003ev2 = [5 0 0]\u003c/p\u003e\u003cp\u003ev3 = [6 0 0 0]\u003c/p\u003e\u003cp\u003eExample 2:\u003c/p\u003e\u003cp\u003ev1 = [9 9]\u003c/p\u003e\u003cp\u003ev2 = [9 9]\u003c/p\u003e\u003cp\u003ev3 = [9 8 0 1]\u003c/p\u003e","function_template":"function v3 = vmultiply(v1,v2)\r\n  v3 = v1*v2;\r\nend","test_suite":"%%\r\nfiletext = fileread('vmultiply.m');\r\nassert(isempty(strfind(filetext,'regexp')))\r\nassert(isempty(strfind(filetext,'switch')))\r\n\r\n%%\r\nv1 = [1 2];\r\nv2 = [5 0 0];\r\nv3_correct = [6 0 0 0];\r\nassert(isequal(vmultiply(v1,v2),v3_correct))\r\nassert(isequal(vmultiply(v2,v1),v3_correct))\r\n\r\n%%\r\nv1 = [9 9];\r\nv2 = [9 9];\r\nv3_correct = [9 8 0 1];\r\nassert(isequal(vmultiply(v1,v2),v3_correct))\r\nassert(isequal(vmultiply(v2,v1),v3_correct))\r\n\r\n%%\r\nv1 = [8 3 4 5 7 1 6 9 4 0 2 0 2 1 5 8 9 4];\r\nv2 = [1 0 0 6 6 9 4 3 1 8 2 7 0 5 4 5 5];\r\nv3_correct = [8 4 0 1 5 8 5 8 2 5 5 9 5 7 5 5 3 3 8 6 7 6 3 6 6 1 1 1 5 0 1 7 7 0];\r\nassert(isequal(vmultiply(v1,v2),v3_correct))\r\nassert(isequal(vmultiply(v2,v1),v3_correct))","published":true,"deleted":false,"likes_count":1,"comments_count":0,"created_by":15521,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":33,"test_suite_updated_at":"2016-09-09T08:36:31.000Z","rescore_all_solutions":false,"group_id":1,"created_at":"2016-09-09T07:51:09.000Z","updated_at":"2025-12-05T13:02:52.000Z","published_at":"2016-09-09T07:51:09.000Z","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\u003eGiven two row vectors, v1 and v2, each representing an integer, such that the vector elements are the digits from left to right, return a row vector v3, of the same format, that represents the product of the integers represented by v1 and v2.\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\u003eExample 1:\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\u003ev1 = [1 2]\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\u003ev2 = [5 0 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\u003ev3 = [6 0 0 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\u003eExample 2:\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\u003ev1 = [9 9]\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\u003ev2 = [9 9]\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\u003ev3 = [9 8 0 1]\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":2453,"title":"Product of elements in row","description":"Product of matrix such that\r\n\r\n a=[3 3 1]\r\n b=9","description_html":"\u003cp\u003eProduct of matrix such that\u003c/p\u003e\u003cpre\u003e a=[3 3 1]\r\n b=9\u003c/pre\u003e","function_template":"function a = prodOfMatrix(b)\r\n  b=b;\r\nend","test_suite":"%%\r\nb=[2 3 4];\r\na=24;\r\nassert(isequal(prodOfMatrix(b),a))\r\n%%\r\nb=[1 2 4];\r\na=8;\r\nassert(isequal(prodOfMatrix(b),a))\r\n%%\r\nb=[9 5 4];\r\na=180;\r\nassert(isequal(prodOfMatrix(b),a))","published":true,"deleted":false,"likes_count":2,"comments_count":3,"created_by":26670,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":295,"test_suite_updated_at":"2014-07-21T15:37:18.000Z","rescore_all_solutions":true,"group_id":1,"created_at":"2014-07-20T06:39:41.000Z","updated_at":"2026-03-05T11:37:50.000Z","published_at":"2014-07-20T06:43:33.000Z","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\u003eProduct of matrix such that\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[ a=[3 3 1]\\n b=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\"}]}"},{"id":44699,"title":"Prime Product","description":"My professor has given a sequence of N numbers as a1, a2, ..., aN and asked me to find the smallest possible value of ai * aj such that it is a prime number, where 1 \u003c= i \u003c j \u003c= N.\r\n\r\nIf it's possible to find any value of ai * aj such that it is a prime number, then print the smallest value of such ai * aj, otherwise print -1.\r\n\r\n  x=[1 2 3]\r\ny = 2\r\n\r\n\r\n  x=[5 5 5 2]\r\ny = -1\r\n","description_html":"\u003cp\u003eMy professor has given a sequence of N numbers as a1, a2, ..., aN and asked me to find the smallest possible value of ai * aj such that it is a prime number, where 1 \u0026lt;= i \u0026lt; j \u0026lt;= N.\u003c/p\u003e\u003cp\u003eIf it's possible to find any value of ai * aj such that it is a prime number, then print the smallest value of such ai * aj, otherwise print -1.\u003c/p\u003e\u003cpre class=\"language-matlab\"\u003ex=[1 2 3]\r\ny = 2\r\n\u003c/pre\u003e\u003cpre class=\"language-matlab\"\u003ex=[5 5 5 2]\r\ny = -1\r\n\u003c/pre\u003e","function_template":"function y = prime_product(x)\r\n  % my first problem I created\r\nend","test_suite":"%%\r\nx = [1 2 3];\r\ny_correct = 2;\r\nassert(isequal(prime_product(x),y_correct))\r\n\r\n%%\r\nx = [5 2 5 2];\r\ny_correct = -1;\r\nassert(isequal(prime_product(x),y_correct))\r\n\r\n%%\r\nx = [1 63];\r\ny_correct = -1;\r\nassert(isequal(prime_product(x),y_correct))\r\n\r\n%% \r\nx = [ 3 6 234 1 623 234 ];\r\ny_correct = 3;\r\nassert(isequal(prime_product(x),y_correct))","published":true,"deleted":false,"likes_count":1,"comments_count":0,"created_by":195572,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":34,"test_suite_updated_at":"2018-07-30T18:29:12.000Z","rescore_all_solutions":true,"group_id":1,"created_at":"2018-07-18T20:13:31.000Z","updated_at":"2025-12-09T15:21:32.000Z","published_at":"2018-07-18T20:40:31.000Z","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\u003eMy professor has given a sequence of N numbers as a1, a2, ..., aN and asked me to find the smallest possible value of ai * aj such that it is a prime number, where 1 \u0026lt;= i \u0026lt; j \u0026lt;= N.\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\u003eIf it's possible to find any value of ai * aj such that it is a prime number, then print the smallest value of such ai * aj, otherwise print -1.\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[x=[1 2 3]\\ny = 2\\n\\nx=[5 5 5 2]\\ny = -1]]\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":55515,"title":"Find the remainder - 01","description":"Given an array of integers, find the remainder when the product of all the elements is divided by N","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: 21px; display: block; min-width: 0px; padding-block-start: 0px; padding-top: 0px; perspective-origin: 407px 10.5px; transform-origin: 407px 10.5px; vertical-align: baseline; \"\u003e\u003cdiv style=\"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: 307.5px 8px; transform-origin: 307.5px 8px; unicode-bidi: normal; \"\u003e\u003cspan style=\"\"\u003eGiven an array of integers, find the remainder when the product of all the elements is divided by N\u003c/span\u003e\u003c/span\u003e\u003c/div\u003e\u003c/div\u003e\u003c/div\u003e","function_template":"function y = rem_mul(x,N)\r\n  y = x;\r\nend","test_suite":"%%\r\nx=[124 ,134 ,23 ,49 ,235 ,13 ];\r\nN=3;\r\ny_correct = 1;\r\nassert(isequal(rem_mul(x,N),y_correct))\r\n\r\n%%\r\nx=[124 ,134 ,23 ,49 ,235 ,13 ];\r\nN=5;\r\ny_correct = 0;\r\nassert(isequal(rem_mul(x,N),y_correct))\r\n\r\n\r\n%%\r\nx=[124 ,134 ,23 ,49 ,235 ,13 ];\r\nN=19;\r\ny_correct = 7;\r\nassert(isequal(rem_mul(x,N),y_correct))\r\n\r\n%%\r\nx=[124 ,134 ,23 ,49 ,235 ,13, 1298323, 1264, 92188212, 9928381832, 12723812313 ];\r\nN=19;\r\ny_correct = 15;\r\nassert(isequal(rem_mul(x,N),y_correct))\r\n\r\n%%\r\nx=[124 ,134 ,23 ,49 ,235 ,13, 1298323, 1264, 92188212, 9928381832, 12723812313 ];\r\nN=199;\r\ny_correct = 8;\r\nassert(isequal(rem_mul(x,N),y_correct))\r\n\r\n%%\r\nx=[124999112 ,13414123356262 ,2312414 ,4912412 ,235124124 ,131298, 1298323, 1264, 92188212, 9928381832, 12723812313 ]\r\nN=1990;\r\ny_correct = 1036;\r\nassert(isequal(rem_mul(x,N),y_correct))\r\n","published":true,"deleted":false,"likes_count":2,"comments_count":7,"created_by":363598,"edited_by":223089,"edited_at":"2022-10-14T07:04:51.000Z","deleted_by":null,"deleted_at":null,"solvers_count":14,"test_suite_updated_at":"2022-10-14T07:04:51.000Z","rescore_all_solutions":false,"group_id":1,"created_at":"2022-09-07T10:15:06.000Z","updated_at":"2025-11-29T16:40:34.000Z","published_at":"2022-09-07T10:23:25.000Z","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\u003eGiven an array of integers, find the remainder when the product of all the elements is divided by N\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":813,"title":"Multiply 2 numbers ","description":"Very easy, you just have to multiply 2 numbers\r\nbut you cannot use the  following signs (*, /, - ,^) ,mtimes , times, cross, prod, cumprod , dec2bin, int2str and num2str functions. Will you take up the challenge?!\r\n\r\nExample :\r\nx= 3;\r\ny= 2;\r\n\r\noutput = 6 since 3*2 = 6 :)","description_html":"\u003cp\u003eVery easy, you just have to multiply 2 numbers\r\nbut you cannot use the  following signs (*, /, - ,^) ,mtimes , times, cross, prod, cumprod , dec2bin, int2str and num2str functions. Will you take up the challenge?!\u003c/p\u003e\u003cp\u003eExample :\r\nx= 3;\r\ny= 2;\u003c/p\u003e\u003cp\u003eoutput = 6 since 3*2 = 6 :)\u003c/p\u003e","function_template":"function output = your_fcn_name(x,y)\r\n  y = x*y;\r\nend","test_suite":"%%\r\nx = 1;\r\ny =2;\r\ny_correct = 2;\r\nassert(isequal(round(your_fcn_name(x,y)),y_correct))\r\nfiletext = fileread('your_fcn_name.m');\r\nassert(isempty(strfind(filetext, '*')),'sign * forbidden')\r\nassert(isempty(strfind(filetext, 'mtimes')),'mtimes forbidden')\r\nassert(isempty(strfind(filetext, 'cross')),'cross forbidden')\r\nassert(isempty(strfind(filetext, 'prod')),'prod forbidden')\r\nassert(isempty(strfind(filetext, 'cumprod')))\r\nassert(isempty(strfind(filetext, 'times')))\r\nassert(isempty(strfind(filetext, 'mldivide')))\r\nassert(isempty(strfind(filetext, 'mrdivide')))\r\nassert(isempty(strfind(filetext, '/')),'/ forbidden')\r\nassert(isempty(strfind(filetext, '\\')))\r\nassert(isempty(strfind(filetext, '-')))\r\nassert(isempty(strfind(filetext, '^')),'^ forbidden')\r\nassert(isempty(strfind(filetext, 'dot')))\r\nassert(isempty(strfind(filetext, '''')),'string forbidden')\r\n\r\n%%\r\nx = 8;\r\ny =25;\r\ny_correct = 200;\r\nassert(isequal(round(your_fcn_name(x,y)),y_correct))\r\nfiletext = fileread('your_fcn_name.m');\r\nassert(isempty(strfind(filetext, '*')))\r\nassert(isempty(strfind(filetext, 'mtimes')))\r\nassert(isempty(strfind(filetext, 'cross')))\r\nassert(isempty(strfind(filetext, 'prod')))\r\nassert(isempty(strfind(filetext, 'cumprod')))\r\nassert(isempty(strfind(filetext, 'times')))\r\nassert(isempty(strfind(filetext, 'dot')))\r\n\r\n%%\r\nx = 8;\r\ny =0;\r\ny_correct = 0;\r\nassert(isequal(round(your_fcn_name(x,y)),y_correct))\r\nfiletext = fileread('your_fcn_name.m');\r\nassert(isempty(strfind(filetext, '*')))\r\nassert(isempty(strfind(filetext, 'mtimes')))\r\nassert(isempty(strfind(filetext, 'cross')))\r\nassert(isempty(strfind(filetext, 'prod')))\r\nassert(isempty(strfind(filetext, 'cumprod')))\r\nassert(isempty(strfind(filetext, 'times')))\r\nassert(isempty(strfind(filetext, 'dot')))\r\n\r\n\r\n%%\r\nx = -148;\r\ny =2865;\r\ny_correct = -424020;\r\nassert(isequal(round(your_fcn_name(x,y)),y_correct))\r\nfiletext = fileread('your_fcn_name.m');\r\nassert(isempty(strfind(filetext, '*')))\r\nassert(isempty(strfind(filetext, 'mtimes')))\r\nassert(isempty(strfind(filetext, 'cross')))\r\nassert(isempty(strfind(filetext, 'prod')))\r\nassert(isempty(strfind(filetext, 'cumprod')))\r\nassert(isempty(strfind(filetext, 'times')))\r\nassert(isempty(strfind(filetext, 'dot')))\r\n\r\n%% Test 5 : randi!!\r\nx = randi([1 58]);\r\ny =286.5;\r\ny_correct = x*y;\r\nassert(abs( your_fcn_name(x,y)-y_correct)\u003c1e-9)\r\nfiletext = fileread('your_fcn_name.m');\r\nassert(isempty(strfind(filetext, '*')))\r\nassert(isempty(strfind(filetext, 'mtimes')))\r\nassert(isempty(strfind(filetext, 'cross')))\r\nassert(isempty(strfind(filetext, 'prod')))\r\nassert(isempty(strfind(filetext, 'cumprod')))\r\nassert(isempty(strfind(filetext, 'times')))\r\nassert(isempty(strfind(filetext, 'dot')))\r\n\r\n\r\n%% Test 6 : randi and pi !!\r\nx = randi([14 580]);\r\ny = -pi;\r\ny_correct = x*y;\r\nassert(abs( your_fcn_name(x,y)-y_correct)\u003c1e-9)\r\n\r\nfiletext = fileread('your_fcn_name.m');\r\nassert(isempty(strfind(filetext, '*')))\r\nassert(isempty(strfind(filetext, 'mtimes')))\r\nassert(isempty(strfind(filetext, 'cross')))\r\nassert(isempty(strfind(filetext, 'prod')))\r\nassert(isempty(strfind(filetext, 'cumprod')))\r\nassert(isempty(strfind(filetext, 'times')))\r\nassert(isempty(strfind(filetext, 'dot')))\r\nassert(isempty(strfind(filetext, 'num2str')))\r\nassert(isempty(strfind(filetext, 'int2str')))\r\nassert(isempty(strfind(filetext, 'dec2bin')))\r\n","published":true,"deleted":false,"likes_count":21,"comments_count":4,"created_by":639,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":348,"test_suite_updated_at":"2012-07-10T12:45:28.000Z","rescore_all_solutions":false,"group_id":1,"created_at":"2012-07-04T09:34:18.000Z","updated_at":"2026-03-28T02:08:05.000Z","published_at":"2012-07-04T09:34:18.000Z","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\u003eVery easy, you just have to multiply 2 numbers but you cannot use the following signs (*, /, - ,^) ,mtimes , times, cross, prod, cumprod , dec2bin, int2str and num2str functions. Will you take up the challenge?!\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\u003eExample : x= 3; y= 2;\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\u003eoutput = 6 since 3*2 = 6 :)\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":42985,"title":"Vector multiplication","description":"Given two row vectors, v1 and v2, each representing an integer, such that the vector elements are the digits from left to right, return a row vector v3, of the same format, that represents the product of the integers represented by v1 and v2.\r\n\r\nExample 1:\r\n\r\nv1 = [1 2]\r\n\r\nv2 = [5 0 0]\r\n\r\nv3 = [6 0 0 0]\r\n\r\nExample 2:\r\n\r\nv1 = [9 9]\r\n\r\nv2 = [9 9]\r\n\r\nv3 = [9 8 0 1]","description_html":"\u003cp\u003eGiven two row vectors, v1 and v2, each representing an integer, such that the vector elements are the digits from left to right, return a row vector v3, of the same format, that represents the product of the integers represented by v1 and v2.\u003c/p\u003e\u003cp\u003eExample 1:\u003c/p\u003e\u003cp\u003ev1 = [1 2]\u003c/p\u003e\u003cp\u003ev2 = [5 0 0]\u003c/p\u003e\u003cp\u003ev3 = [6 0 0 0]\u003c/p\u003e\u003cp\u003eExample 2:\u003c/p\u003e\u003cp\u003ev1 = [9 9]\u003c/p\u003e\u003cp\u003ev2 = [9 9]\u003c/p\u003e\u003cp\u003ev3 = [9 8 0 1]\u003c/p\u003e","function_template":"function v3 = vmultiply(v1,v2)\r\n  v3 = v1*v2;\r\nend","test_suite":"%%\r\nfiletext = fileread('vmultiply.m');\r\nassert(isempty(strfind(filetext,'regexp')))\r\nassert(isempty(strfind(filetext,'switch')))\r\n\r\n%%\r\nv1 = [1 2];\r\nv2 = [5 0 0];\r\nv3_correct = [6 0 0 0];\r\nassert(isequal(vmultiply(v1,v2),v3_correct))\r\nassert(isequal(vmultiply(v2,v1),v3_correct))\r\n\r\n%%\r\nv1 = [9 9];\r\nv2 = [9 9];\r\nv3_correct = [9 8 0 1];\r\nassert(isequal(vmultiply(v1,v2),v3_correct))\r\nassert(isequal(vmultiply(v2,v1),v3_correct))\r\n\r\n%%\r\nv1 = [8 3 4 5 7 1 6 9 4 0 2 0 2 1 5 8 9 4];\r\nv2 = [1 0 0 6 6 9 4 3 1 8 2 7 0 5 4 5 5];\r\nv3_correct = [8 4 0 1 5 8 5 8 2 5 5 9 5 7 5 5 3 3 8 6 7 6 3 6 6 1 1 1 5 0 1 7 7 0];\r\nassert(isequal(vmultiply(v1,v2),v3_correct))\r\nassert(isequal(vmultiply(v2,v1),v3_correct))","published":true,"deleted":false,"likes_count":1,"comments_count":0,"created_by":15521,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":33,"test_suite_updated_at":"2016-09-09T08:36:31.000Z","rescore_all_solutions":false,"group_id":1,"created_at":"2016-09-09T07:51:09.000Z","updated_at":"2025-12-05T13:02:52.000Z","published_at":"2016-09-09T07:51:09.000Z","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\u003eGiven two row vectors, v1 and v2, each representing an integer, such that the vector elements are the digits from left to right, return a row vector v3, of the same format, that represents the product of the integers represented by v1 and v2.\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\u003eExample 1:\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\u003ev1 = [1 2]\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\u003ev2 = [5 0 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\u003ev3 = [6 0 0 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\u003eExample 2:\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\u003ev1 = [9 9]\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\u003ev2 = [9 9]\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\u003ev3 = [9 8 0 1]\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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