{"group":{"id":1,"name":"Community","lockable":false,"created_at":"2012-01-18T18:02:15.000Z","updated_at":"2025-12-14T01:33:56.000Z","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":"2025-12-14T00:00:00.000Z","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":195,"title":"Program an exclusive OR operation with logical operators","description":"Program an exclusive or operation *without* using the MATLAB function xor.\r\n\r\nUse logical operators like |, \u0026, ~, ... instead.\r\n\r\nExamples:\r\n  \r\n  myXOR(1,1)\r\n    \r\n  ans = 0\r\n         \r\n    \r\n  myXOR(1,0)\r\n    \r\n  ans = 1\r\n    \r\n    \r\n  myXOR(0,1)\r\n    \r\n  ans = 1\r\n    \r\n         \r\n  myXOR(0,0)\r\n    \r\n  ans = 0","description_html":"\u003cp\u003eProgram an exclusive or operation \u003cb\u003ewithout\u003c/b\u003e using the MATLAB function xor.\u003c/p\u003e\u003cp\u003eUse logical operators like |, \u0026, ~, ... instead.\u003c/p\u003e\u003cp\u003eExamples:\u003c/p\u003e\u003cpre class=\"language-matlab\"\u003emyXOR(1,1)\r\n\u003c/pre\u003e\u003cpre class=\"language-matlab\"\u003eans = 0\r\n\u003c/pre\u003e\u003cpre class=\"language-matlab\"\u003emyXOR(1,0)\r\n\u003c/pre\u003e\u003cpre class=\"language-matlab\"\u003eans = 1\r\n\u003c/pre\u003e\u003cpre class=\"language-matlab\"\u003emyXOR(0,1)\r\n\u003c/pre\u003e\u003cpre class=\"language-matlab\"\u003eans = 1\r\n\u003c/pre\u003e\u003cpre class=\"language-matlab\"\u003emyXOR(0,0)\r\n\u003c/pre\u003e\u003cpre class=\"language-matlab\"\u003eans = 0\r\n\u003c/pre\u003e","function_template":"function y = myXOR(a,b)\r\n  y=0;\r\nend","test_suite":"%%\r\na=0;b=0;\r\nres=0;\r\nassert(isequal(myXOR(a,b),res))\r\n\r\n%%\r\na=1;b=1;\r\nres=0;\r\nassert(isequal(myXOR(a,b),res))\r\n\r\n%%\r\na=1;b=0;\r\nres=1;\r\nassert(isequal(myXOR(a,b),res))\r\n\r\n%%\r\na=0;b=1;\r\nres=1;\r\nassert(isequal(myXOR(a,b),res))\r\n\r\n%%\r\na=[0 0 1 1];b=[1 0 1 0];\r\nres=[1 0 0 1];\r\nassert(isequal(myXOR(a,b),res))","published":true,"deleted":false,"likes_count":9,"comments_count":0,"created_by":564,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":751,"test_suite_updated_at":"2012-01-31T07:59:29.000Z","rescore_all_solutions":false,"group_id":1,"created_at":"2012-01-31T07:59:29.000Z","updated_at":"2026-04-02T12:43:53.000Z","published_at":"2012-01-31T08:03:50.000Z","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\u003eProgram an exclusive or operation\u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:t\u003e \u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:rPr\u003e\u003cw:b/\u003e\u003c/w:rPr\u003e\u003cw:t\u003ewithout\u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:t\u003e using the MATLAB function xor.\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\u003eUse logical operators like\u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:t\u003e |\u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:t\u003e, \u0026amp;, ~, ... instead.\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\u003eExamples:\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[myXOR(1,1)\\n\\nans = 0\\n\\nmyXOR(1,0)\\n\\nans = 1\\n\\nmyXOR(0,1)\\n\\nans = 1\\n\\nmyXOR(0,0)\\n\\nans = 0]]\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":830,"title":"Fill a zeros matrix ","description":"The aim is to fill an array of all zeros given a numerical value and the index of row and columns for this value.\r\n\r\n3 Inputs: \r\n\r\n* value : unique numerical value to fill the square zero matrix\r\n* row : index of row to fill\r\n* col : corresponding index of column to fill\r\n\r\n1 Output:\r\n\r\n- a matrix of same size which have for each row and col the value  specified.\r\n\r\n*Example 1*\r\n\r\nFill a 2*3 matrix with the value -13 for the line 2 and column 3 :\r\n  \r\n  value = -13;\r\n  row = 2;\r\n  col = 3;\r\n  \r\noutput B is:\r\n\r\n  B =  [0     0     0\r\n        0     0   -13]\r\n\r\n*Example 2*\r\n\r\n  value = 2012;\r\n  row = [ 2 3 3 5 ];\r\n  col = [ 1 1 4 4 ];\r\n\r\n\r\noutput B is\r\n\r\n  \r\n B  =\r\n  \r\n             0           0           0           0\r\n          2012           0           0           0\r\n          2012           0           0        2012\r\n             0           0           0           0\r\n             0           0           0        2012\r\n\r\n*Restrictions*\r\n\r\nSorry, as usual I want to make this problem a little bit harder:\r\nThe following commands are forbidden: *zeros, for, repmat, ones, while, and sparse*.","description_html":"\u003cp\u003eThe aim is to fill an array of all zeros given a numerical value and the index of row and columns for this value.\u003c/p\u003e\u003cp\u003e3 Inputs:\u003c/p\u003e\u003cul\u003e\u003cli\u003evalue : unique numerical value to fill the square zero matrix\u003c/li\u003e\u003cli\u003erow : index of row to fill\u003c/li\u003e\u003cli\u003ecol : corresponding index of column to fill\u003c/li\u003e\u003c/ul\u003e\u003cp\u003e1 Output:\u003c/p\u003e\u003cp\u003e- a matrix of same size which have for each row and col the value  specified.\u003c/p\u003e\u003cp\u003e\u003cb\u003eExample 1\u003c/b\u003e\u003c/p\u003e\u003cp\u003eFill a 2*3 matrix with the value -13 for the line 2 and column 3 :\u003c/p\u003e\u003cpre class=\"language-matlab\"\u003evalue = -13;\r\nrow = 2;\r\ncol = 3;\r\n\u003c/pre\u003e\u003cp\u003eoutput B is:\u003c/p\u003e\u003cpre class=\"language-matlab\"\u003eB =  [0     0     0\r\n      0     0   -13]\r\n\u003c/pre\u003e\u003cp\u003e\u003cb\u003eExample 2\u003c/b\u003e\u003c/p\u003e\u003cpre class=\"language-matlab\"\u003evalue = 2012;\r\nrow = [ 2 3 3 5 ];\r\ncol = [ 1 1 4 4 ];\r\n\u003c/pre\u003e\u003cp\u003eoutput B is\u003c/p\u003e\u003cpre\u003e B  =\u003c/pre\u003e\u003cpre\u003e             0           0           0           0\r\n          2012           0           0           0\r\n          2012           0           0        2012\r\n             0           0           0           0\r\n             0           0           0        2012\u003c/pre\u003e\u003cp\u003e\u003cb\u003eRestrictions\u003c/b\u003e\u003c/p\u003e\u003cp\u003eSorry, as usual I want to make this problem a little bit harder:\r\nThe following commands are forbidden: \u003cb\u003ezeros, for, repmat, ones, while, and sparse\u003c/b\u003e.\u003c/p\u003e","function_template":"function B = your_fcn_name(value,row,col)\r\n  B = value+row+col;\r\nend","test_suite":"%% Test first example\r\nvalue = -13;\r\nrow = 2;\r\ncol = 3;\r\nB =  [0     0     0\r\n      0     0   -13];\r\nassert(isequal(your_fcn_name(value,row,col),B))\r\nfiletext = fileread('your_fcn_name.m');\r\nassert(isempty(strfind(filetext, 'zeros')),'zeros forbidden')\r\nassert(isempty(strfind(filetext, 'for')),'for forbidden')\r\nassert(isempty(strfind(filetext, 'repmat')),'repmat forbidden')\r\nassert(isempty(strfind(filetext, 'ones')),'ones forbidden')\r\nassert(isempty(strfind(filetext, 'while')),'while forbidden')\r\nassert(isempty(strfind(filetext, 'sparse')),'sparse forbidden')\r\n\r\n%% Test second example\r\nvalue = 2012;\r\nrow = [ 2 3 3 5 ];\r\ncol = [ 1 1 4 4 ];\r\nC =    [ 0           0           0           0\r\n          2012           0           0           0\r\n          2012           0           0        2012\r\n             0           0           0           0\r\n             0           0           0        2012];\r\nassert(isequal(your_fcn_name(value,row,col),C))\r\nfiletext = fileread('your_fcn_name.m');\r\nassert(isempty(strfind(filetext, 'zeros')),'zeros forbidden')\r\nassert(isempty(strfind(filetext, 'for')),'for forbidden')\r\nassert(isempty(strfind(filetext, 'repmat')),'repmat forbidden')\r\nassert(isempty(strfind(filetext, 'ones')),'ones forbidden')\r\nassert(isempty(strfind(filetext, 'while')),'while forbidden')\r\nassert(isempty(strfind(filetext, 'sparse')),'sparse forbidden')\r\n\r\n%% zeros\r\n\r\nI = [ 2 3 3 5 1 4 9 2 3 9 ];\r\nJ = [ 1 1 4 4 5 5 6 8 8 9 ];\r\n\r\nassert(isequal(your_fcn_name(0,I,J),zeros(9)))\r\nfiletext = fileread('your_fcn_name.m');\r\nassert(isempty(strfind(filetext, 'zeros')),'zeros forbidden')\r\nassert(isempty(strfind(filetext, 'for')),'for forbidden')\r\nassert(isempty(strfind(filetext, 'repmat')),'repmat forbidden')\r\nassert(isempty(strfind(filetext, 'ones')),'ones forbidden')\r\nassert(isempty(strfind(filetext, 'while')),'while forbidden')\r\nassert(isempty(strfind(filetext, 'sparse')),'sparse forbidden')\r\n\r\n%% another one\r\nL = [ 2 3 3 5 1 4 9 2 3 9 ];\r\nM = [ 1 1 4 4 5 5 6 8 8 9 ];\r\nsol =[  0     0     0     0     1     0     0     0     0\r\n     1     0     0     0     0     0     0     1     0\r\n     1     0     0     1     0     0     0     1     0\r\n     0     0     0     0     1     0     0     0     0\r\n     0     0     0     1     0     0     0     0     0\r\n     0     0     0     0     0     0     0     0     0\r\n     0     0     0     0     0     0     0     0     0\r\n     0     0     0     0     0     0     0     0     0\r\n     0     0     0     0     0     1     0     0     1];\r\nassert(isequal(your_fcn_name(1,L,M),sol))\r\nfiletext = fileread('your_fcn_name.m');\r\nassert(isempty(strfind(filetext, 'zeros')),'zeros forbidden')\r\nassert(isempty(strfind(filetext, 'for')),'for forbidden')\r\nassert(isempty(strfind(filetext, 'repmat')),'repmat forbidden')\r\nassert(isempty(strfind(filetext, 'ones')),'ones forbidden')\r\nassert(isempty(strfind(filetext, 'while')),'while forbidden')\r\nassert(isempty(strfind(filetext, 'sparse')),'sparse forbidden')\r\n\r\n%% Last example\r\nI = [ 2 3 3 5 1 4 9 2 3 9 ];\r\nJ = [ 1 1 4 4 5 5 6 8 8 9 ];\r\nZ=[\r\n\r\n           0           0           0           0        1999           0           0           0           0\r\n        1999           0           0           0           0           0           0        1999           0\r\n        1999           0           0        1999           0           0           0        1999           0\r\n           0           0           0           0        1999           0           0           0           0\r\n           0           0           0        1999           0           0           0           0           0\r\n           0           0           0           0           0           0           0           0           0\r\n           0           0           0           0           0           0           0           0           0\r\n           0           0           0           0           0           0           0           0           0\r\n           0           0           0           0           0        1999           0           0        1999\r\n];\r\nassert(isequal(your_fcn_name(1999,I,J),Z))\r\nfiletext = fileread('your_fcn_name.m');\r\nassert(isempty(strfind(filetext, 'zeros')),'zeros forbidden')\r\nassert(isempty(strfind(filetext, 'for')),'for forbidden')\r\nassert(isempty(strfind(filetext, 'repmat')),'repmat forbidden')\r\nassert(isempty(strfind(filetext, 'ones')),'ones forbidden')\r\nassert(isempty(strfind(filetext, 'while')),'while forbidden')\r\nassert(isempty(strfind(filetext, 'sparse')),'sparse forbidden')","published":true,"deleted":false,"likes_count":9,"comments_count":10,"created_by":639,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":658,"test_suite_updated_at":"2012-07-13T08:11:23.000Z","rescore_all_solutions":false,"group_id":12,"created_at":"2012-07-13T08:08:16.000Z","updated_at":"2026-03-28T01:37:14.000Z","published_at":"2012-07-13T08:11:23.000Z","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\u003eThe aim is to fill an array of all zeros given a numerical value and the index of row and columns for this value.\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\u003e3 Inputs:\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\u003evalue : unique numerical value to fill the square zero matrix\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\u003erow : index of row to fill\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\u003ecol : corresponding index of column to fill\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\u003e1 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\u003e- a matrix of same size which have for each row and col the value specified.\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:rPr\u003e\u003cw:b/\u003e\u003c/w:rPr\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\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eFill a 2*3 matrix with the value -13 for the line 2 and column 3 :\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[value = -13;\\nrow = 2;\\ncol = 3;]]\u003e\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\u003eoutput B is:\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[B =  [0     0     0\\n      0     0   -13]]]\u003e\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:rPr\u003e\u003cw:b/\u003e\u003c/w:rPr\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=\\\"code\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003e\u003c![CDATA[value = 2012;\\nrow = [ 2 3 3 5 ];\\ncol = [ 1 1 4 4 ];]]\u003e\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\u003eoutput B is\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[ B  =\\n\\n             0           0           0           0\\n          2012           0           0           0\\n          2012           0           0        2012\\n             0           0           0           0\\n             0           0           0        2012]]\u003e\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:rPr\u003e\u003cw:b/\u003e\u003c/w:rPr\u003e\u003cw:t\u003eRestrictions\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\u003eSorry, as usual I want to make this problem a little bit harder: The following commands are forbidden:\u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:t\u003e \u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:rPr\u003e\u003cw:b/\u003e\u003c/w:rPr\u003e\u003cw:t\u003ezeros, for, repmat, ones, while, and sparse\u003c/w:t\u003e\u003c/w:r\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\"},{\"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":195,"title":"Program an exclusive OR operation with logical operators","description":"Program an exclusive or operation *without* using the MATLAB function xor.\r\n\r\nUse logical operators like |, \u0026, ~, ... instead.\r\n\r\nExamples:\r\n  \r\n  myXOR(1,1)\r\n    \r\n  ans = 0\r\n         \r\n    \r\n  myXOR(1,0)\r\n    \r\n  ans = 1\r\n    \r\n    \r\n  myXOR(0,1)\r\n    \r\n  ans = 1\r\n    \r\n         \r\n  myXOR(0,0)\r\n    \r\n  ans = 0","description_html":"\u003cp\u003eProgram an exclusive or operation \u003cb\u003ewithout\u003c/b\u003e using the MATLAB function xor.\u003c/p\u003e\u003cp\u003eUse logical operators like |, \u0026, ~, ... instead.\u003c/p\u003e\u003cp\u003eExamples:\u003c/p\u003e\u003cpre class=\"language-matlab\"\u003emyXOR(1,1)\r\n\u003c/pre\u003e\u003cpre class=\"language-matlab\"\u003eans = 0\r\n\u003c/pre\u003e\u003cpre class=\"language-matlab\"\u003emyXOR(1,0)\r\n\u003c/pre\u003e\u003cpre class=\"language-matlab\"\u003eans = 1\r\n\u003c/pre\u003e\u003cpre class=\"language-matlab\"\u003emyXOR(0,1)\r\n\u003c/pre\u003e\u003cpre class=\"language-matlab\"\u003eans = 1\r\n\u003c/pre\u003e\u003cpre class=\"language-matlab\"\u003emyXOR(0,0)\r\n\u003c/pre\u003e\u003cpre class=\"language-matlab\"\u003eans = 0\r\n\u003c/pre\u003e","function_template":"function y = myXOR(a,b)\r\n  y=0;\r\nend","test_suite":"%%\r\na=0;b=0;\r\nres=0;\r\nassert(isequal(myXOR(a,b),res))\r\n\r\n%%\r\na=1;b=1;\r\nres=0;\r\nassert(isequal(myXOR(a,b),res))\r\n\r\n%%\r\na=1;b=0;\r\nres=1;\r\nassert(isequal(myXOR(a,b),res))\r\n\r\n%%\r\na=0;b=1;\r\nres=1;\r\nassert(isequal(myXOR(a,b),res))\r\n\r\n%%\r\na=[0 0 1 1];b=[1 0 1 0];\r\nres=[1 0 0 1];\r\nassert(isequal(myXOR(a,b),res))","published":true,"deleted":false,"likes_count":9,"comments_count":0,"created_by":564,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":751,"test_suite_updated_at":"2012-01-31T07:59:29.000Z","rescore_all_solutions":false,"group_id":1,"created_at":"2012-01-31T07:59:29.000Z","updated_at":"2026-04-02T12:43:53.000Z","published_at":"2012-01-31T08:03:50.000Z","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\u003eProgram an exclusive or operation\u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:t\u003e \u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:rPr\u003e\u003cw:b/\u003e\u003c/w:rPr\u003e\u003cw:t\u003ewithout\u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:t\u003e using the MATLAB function xor.\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\u003eUse logical operators like\u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:t\u003e |\u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:t\u003e, \u0026amp;, ~, ... instead.\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\u003eExamples:\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[myXOR(1,1)\\n\\nans = 0\\n\\nmyXOR(1,0)\\n\\nans = 1\\n\\nmyXOR(0,1)\\n\\nans = 1\\n\\nmyXOR(0,0)\\n\\nans = 0]]\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":830,"title":"Fill a zeros matrix ","description":"The aim is to fill an array of all zeros given a numerical value and the index of row and columns for this value.\r\n\r\n3 Inputs: \r\n\r\n* value : unique numerical value to fill the square zero matrix\r\n* row : index of row to fill\r\n* col : corresponding index of column to fill\r\n\r\n1 Output:\r\n\r\n- a matrix of same size which have for each row and col the value  specified.\r\n\r\n*Example 1*\r\n\r\nFill a 2*3 matrix with the value -13 for the line 2 and column 3 :\r\n  \r\n  value = -13;\r\n  row = 2;\r\n  col = 3;\r\n  \r\noutput B is:\r\n\r\n  B =  [0     0     0\r\n        0     0   -13]\r\n\r\n*Example 2*\r\n\r\n  value = 2012;\r\n  row = [ 2 3 3 5 ];\r\n  col = [ 1 1 4 4 ];\r\n\r\n\r\noutput B is\r\n\r\n  \r\n B  =\r\n  \r\n             0           0           0           0\r\n          2012           0           0           0\r\n          2012           0           0        2012\r\n             0           0           0           0\r\n             0           0           0        2012\r\n\r\n*Restrictions*\r\n\r\nSorry, as usual I want to make this problem a little bit harder:\r\nThe following commands are forbidden: *zeros, for, repmat, ones, while, and sparse*.","description_html":"\u003cp\u003eThe aim is to fill an array of all zeros given a numerical value and the index of row and columns for this value.\u003c/p\u003e\u003cp\u003e3 Inputs:\u003c/p\u003e\u003cul\u003e\u003cli\u003evalue : unique numerical value to fill the square zero matrix\u003c/li\u003e\u003cli\u003erow : index of row to fill\u003c/li\u003e\u003cli\u003ecol : corresponding index of column to fill\u003c/li\u003e\u003c/ul\u003e\u003cp\u003e1 Output:\u003c/p\u003e\u003cp\u003e- a matrix of same size which have for each row and col the value  specified.\u003c/p\u003e\u003cp\u003e\u003cb\u003eExample 1\u003c/b\u003e\u003c/p\u003e\u003cp\u003eFill a 2*3 matrix with the value -13 for the line 2 and column 3 :\u003c/p\u003e\u003cpre class=\"language-matlab\"\u003evalue = -13;\r\nrow = 2;\r\ncol = 3;\r\n\u003c/pre\u003e\u003cp\u003eoutput B is:\u003c/p\u003e\u003cpre class=\"language-matlab\"\u003eB =  [0     0     0\r\n      0     0   -13]\r\n\u003c/pre\u003e\u003cp\u003e\u003cb\u003eExample 2\u003c/b\u003e\u003c/p\u003e\u003cpre class=\"language-matlab\"\u003evalue = 2012;\r\nrow = [ 2 3 3 5 ];\r\ncol = [ 1 1 4 4 ];\r\n\u003c/pre\u003e\u003cp\u003eoutput B is\u003c/p\u003e\u003cpre\u003e B  =\u003c/pre\u003e\u003cpre\u003e             0           0           0           0\r\n          2012           0           0           0\r\n          2012           0           0        2012\r\n             0           0           0           0\r\n             0           0           0        2012\u003c/pre\u003e\u003cp\u003e\u003cb\u003eRestrictions\u003c/b\u003e\u003c/p\u003e\u003cp\u003eSorry, as usual I want to make this problem a little bit harder:\r\nThe following commands are forbidden: \u003cb\u003ezeros, for, repmat, ones, while, and sparse\u003c/b\u003e.\u003c/p\u003e","function_template":"function B = your_fcn_name(value,row,col)\r\n  B = value+row+col;\r\nend","test_suite":"%% Test first example\r\nvalue = -13;\r\nrow = 2;\r\ncol = 3;\r\nB =  [0     0     0\r\n      0     0   -13];\r\nassert(isequal(your_fcn_name(value,row,col),B))\r\nfiletext = fileread('your_fcn_name.m');\r\nassert(isempty(strfind(filetext, 'zeros')),'zeros forbidden')\r\nassert(isempty(strfind(filetext, 'for')),'for forbidden')\r\nassert(isempty(strfind(filetext, 'repmat')),'repmat forbidden')\r\nassert(isempty(strfind(filetext, 'ones')),'ones forbidden')\r\nassert(isempty(strfind(filetext, 'while')),'while forbidden')\r\nassert(isempty(strfind(filetext, 'sparse')),'sparse forbidden')\r\n\r\n%% Test second example\r\nvalue = 2012;\r\nrow = [ 2 3 3 5 ];\r\ncol = [ 1 1 4 4 ];\r\nC =    [ 0           0           0           0\r\n          2012           0           0           0\r\n          2012           0           0        2012\r\n             0           0           0           0\r\n             0           0           0        2012];\r\nassert(isequal(your_fcn_name(value,row,col),C))\r\nfiletext = fileread('your_fcn_name.m');\r\nassert(isempty(strfind(filetext, 'zeros')),'zeros forbidden')\r\nassert(isempty(strfind(filetext, 'for')),'for forbidden')\r\nassert(isempty(strfind(filetext, 'repmat')),'repmat forbidden')\r\nassert(isempty(strfind(filetext, 'ones')),'ones forbidden')\r\nassert(isempty(strfind(filetext, 'while')),'while forbidden')\r\nassert(isempty(strfind(filetext, 'sparse')),'sparse forbidden')\r\n\r\n%% zeros\r\n\r\nI = [ 2 3 3 5 1 4 9 2 3 9 ];\r\nJ = [ 1 1 4 4 5 5 6 8 8 9 ];\r\n\r\nassert(isequal(your_fcn_name(0,I,J),zeros(9)))\r\nfiletext = fileread('your_fcn_name.m');\r\nassert(isempty(strfind(filetext, 'zeros')),'zeros forbidden')\r\nassert(isempty(strfind(filetext, 'for')),'for forbidden')\r\nassert(isempty(strfind(filetext, 'repmat')),'repmat forbidden')\r\nassert(isempty(strfind(filetext, 'ones')),'ones forbidden')\r\nassert(isempty(strfind(filetext, 'while')),'while forbidden')\r\nassert(isempty(strfind(filetext, 'sparse')),'sparse forbidden')\r\n\r\n%% another one\r\nL = [ 2 3 3 5 1 4 9 2 3 9 ];\r\nM = [ 1 1 4 4 5 5 6 8 8 9 ];\r\nsol =[  0     0     0     0     1     0     0     0     0\r\n     1     0     0     0     0     0     0     1     0\r\n     1     0     0     1     0     0     0     1     0\r\n     0     0     0     0     1     0     0     0     0\r\n     0     0     0     1     0     0     0     0     0\r\n     0     0     0     0     0     0     0     0     0\r\n     0     0     0     0     0     0     0     0     0\r\n     0     0     0     0     0     0     0     0     0\r\n     0     0     0     0     0     1     0     0     1];\r\nassert(isequal(your_fcn_name(1,L,M),sol))\r\nfiletext = fileread('your_fcn_name.m');\r\nassert(isempty(strfind(filetext, 'zeros')),'zeros forbidden')\r\nassert(isempty(strfind(filetext, 'for')),'for forbidden')\r\nassert(isempty(strfind(filetext, 'repmat')),'repmat forbidden')\r\nassert(isempty(strfind(filetext, 'ones')),'ones forbidden')\r\nassert(isempty(strfind(filetext, 'while')),'while forbidden')\r\nassert(isempty(strfind(filetext, 'sparse')),'sparse forbidden')\r\n\r\n%% Last example\r\nI = [ 2 3 3 5 1 4 9 2 3 9 ];\r\nJ = [ 1 1 4 4 5 5 6 8 8 9 ];\r\nZ=[\r\n\r\n           0           0           0           0        1999           0           0           0           0\r\n        1999           0           0           0           0           0           0        1999           0\r\n        1999           0           0        1999           0           0           0        1999           0\r\n           0           0           0           0        1999           0           0           0           0\r\n           0           0           0        1999           0           0           0           0           0\r\n           0           0           0           0           0           0           0           0           0\r\n           0           0           0           0           0           0           0           0           0\r\n           0           0           0           0           0           0           0           0           0\r\n           0           0           0           0           0        1999           0           0        1999\r\n];\r\nassert(isequal(your_fcn_name(1999,I,J),Z))\r\nfiletext = fileread('your_fcn_name.m');\r\nassert(isempty(strfind(filetext, 'zeros')),'zeros forbidden')\r\nassert(isempty(strfind(filetext, 'for')),'for forbidden')\r\nassert(isempty(strfind(filetext, 'repmat')),'repmat forbidden')\r\nassert(isempty(strfind(filetext, 'ones')),'ones forbidden')\r\nassert(isempty(strfind(filetext, 'while')),'while forbidden')\r\nassert(isempty(strfind(filetext, 'sparse')),'sparse forbidden')","published":true,"deleted":false,"likes_count":9,"comments_count":10,"created_by":639,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":658,"test_suite_updated_at":"2012-07-13T08:11:23.000Z","rescore_all_solutions":false,"group_id":12,"created_at":"2012-07-13T08:08:16.000Z","updated_at":"2026-03-28T01:37:14.000Z","published_at":"2012-07-13T08:11:23.000Z","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\u003eThe aim is to fill an array of all zeros given a numerical value and the index of row and columns for this value.\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\u003e3 Inputs:\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\u003evalue : unique numerical value to fill the square zero matrix\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle 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