{"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":43803,"title":"Cookie Cutters","description":"Given a larger and smaller matrix, perform element-by-element multiplication on the smaller matrix and a sub-matrix of the larger matrix with a given offset. Return that matrix. For example, given \r\n\r\n m =\r\n   [ 17  24   1   8  15\r\n     23   5   7  14  16\r\n      4   6  13  20  22\r\n     10  12  19  21   3\r\n     11  18  25   2   9 ]\r\n\r\nand \r\n\r\n n =\r\n   [ 1 1 1\r\n     1 1 1 ]\r\n\r\nand o = [2 3], the result would be\r\n\r\n    7  14  16\r\n   13  20  22\r\n\r\nThe overlap of the two matrices will always be valid, so [4 5] would not be a valid offset for this example problem.\r\n\r\n","description_html":"\u003cp\u003eGiven a larger and smaller matrix, perform element-by-element multiplication on the smaller matrix and a sub-matrix of the larger matrix with a given offset. Return that matrix. For example, given\u003c/p\u003e\u003cpre\u003e m =\r\n   [ 17  24   1   8  15\r\n     23   5   7  14  16\r\n      4   6  13  20  22\r\n     10  12  19  21   3\r\n     11  18  25   2   9 ]\u003c/pre\u003e\u003cp\u003eand\u003c/p\u003e\u003cpre\u003e n =\r\n   [ 1 1 1\r\n     1 1 1 ]\u003c/pre\u003e\u003cp\u003eand o = [2 3], the result would be\u003c/p\u003e\u003cpre\u003e    7  14  16\r\n   13  20  22\u003c/pre\u003e\u003cp\u003eThe overlap of the two matrices will always be valid, so [4 5] would not be a valid offset for this example problem.\u003c/p\u003e","function_template":"function y = cookiecutter(m,n,o)\r\n  y = x;\r\nend","test_suite":"%%\r\nm = magic(5);\r\nn = ones(2,3);\r\no = [2 3];\r\ny_correct = [7,14,16;13,20,22];\r\nassert(isequal(cookiecutter(m,n,o),y_correct))\r\n%%\r\nm = 1;\r\nn = 8;\r\no = [1 1];\r\ny_correct = 8;\r\nassert(isequal(cookiecutter(m,n,o),y_correct))\r\n%%\r\nm = magic(20);\r\nn = ones(3);\r\no = [17 17];\r\ny_correct = [64,338,339;357,43,42;377,23,22];\r\nassert(isequal(cookiecutter(m,n,o),y_correct))\r\n%%\r\nm = magic(20);\r\nn = 5.*ones(2,3);\r\no = [4 10];\r\ny_correct = [350,355,1645;450,455,1545];\r\nassert(isequal(cookiecutter(m,n,o),y_correct))\r\n%%\r\nm = magic(7);\r\nm=m(:,1:end-1);\r\nn = spiral(3);\r\no = [5 4];\r\ny_correct = [231,336,396;246,43,6;245,8,33];\r\nassert(isequal(cookiecutter(m,n,o),y_correct))","published":true,"deleted":false,"likes_count":2,"comments_count":2,"created_by":93456,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":69,"test_suite_updated_at":"2017-01-04T22:57:15.000Z","rescore_all_solutions":false,"group_id":24,"created_at":"2016-12-13T23:29:27.000Z","updated_at":"2026-05-04T19:31:08.000Z","published_at":"2016-12-13T23:29:27.000Z","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 larger and smaller matrix, perform element-by-element multiplication on the smaller matrix and a sub-matrix of the larger matrix with a given offset. Return that matrix. For example, given\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[ m =\\n   [ 17  24   1   8  15\\n     23   5   7  14  16\\n      4   6  13  20  22\\n     10  12  19  21   3\\n     11  18  25   2   9 ]]]\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\u003eand\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[ n =\\n   [ 1 1 1\\n     1 1 1 ]]]\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\u003eand o = [2 3], the result would be\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[    7  14  16\\n   13  20  22]]\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\u003eThe overlap of the two matrices will always be valid, so [4 5] would not be a valid offset for this example problem.\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":43803,"title":"Cookie Cutters","description":"Given a larger and smaller matrix, perform element-by-element multiplication on the smaller matrix and a sub-matrix of the larger matrix with a given offset. Return that matrix. For example, given \r\n\r\n m =\r\n   [ 17  24   1   8  15\r\n     23   5   7  14  16\r\n      4   6  13  20  22\r\n     10  12  19  21   3\r\n     11  18  25   2   9 ]\r\n\r\nand \r\n\r\n n =\r\n   [ 1 1 1\r\n     1 1 1 ]\r\n\r\nand o = [2 3], the result would be\r\n\r\n    7  14  16\r\n   13  20  22\r\n\r\nThe overlap of the two matrices will always be valid, so [4 5] would not be a valid offset for this example problem.\r\n\r\n","description_html":"\u003cp\u003eGiven a larger and smaller matrix, perform element-by-element multiplication on the smaller matrix and a sub-matrix of the larger matrix with a given offset. Return that matrix. For example, given\u003c/p\u003e\u003cpre\u003e m =\r\n   [ 17  24   1   8  15\r\n     23   5   7  14  16\r\n      4   6  13  20  22\r\n     10  12  19  21   3\r\n     11  18  25   2   9 ]\u003c/pre\u003e\u003cp\u003eand\u003c/p\u003e\u003cpre\u003e n =\r\n   [ 1 1 1\r\n     1 1 1 ]\u003c/pre\u003e\u003cp\u003eand o = [2 3], the result would be\u003c/p\u003e\u003cpre\u003e    7  14  16\r\n   13  20  22\u003c/pre\u003e\u003cp\u003eThe overlap of the two matrices will always be valid, so [4 5] would not be a valid offset for this example problem.\u003c/p\u003e","function_template":"function y = cookiecutter(m,n,o)\r\n  y = x;\r\nend","test_suite":"%%\r\nm = magic(5);\r\nn = ones(2,3);\r\no = [2 3];\r\ny_correct = [7,14,16;13,20,22];\r\nassert(isequal(cookiecutter(m,n,o),y_correct))\r\n%%\r\nm = 1;\r\nn = 8;\r\no = [1 1];\r\ny_correct = 8;\r\nassert(isequal(cookiecutter(m,n,o),y_correct))\r\n%%\r\nm = magic(20);\r\nn = ones(3);\r\no = [17 17];\r\ny_correct = [64,338,339;357,43,42;377,23,22];\r\nassert(isequal(cookiecutter(m,n,o),y_correct))\r\n%%\r\nm = magic(20);\r\nn = 5.*ones(2,3);\r\no = [4 10];\r\ny_correct = [350,355,1645;450,455,1545];\r\nassert(isequal(cookiecutter(m,n,o),y_correct))\r\n%%\r\nm = magic(7);\r\nm=m(:,1:end-1);\r\nn = spiral(3);\r\no = [5 4];\r\ny_correct = [231,336,396;246,43,6;245,8,33];\r\nassert(isequal(cookiecutter(m,n,o),y_correct))","published":true,"deleted":false,"likes_count":2,"comments_count":2,"created_by":93456,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":69,"test_suite_updated_at":"2017-01-04T22:57:15.000Z","rescore_all_solutions":false,"group_id":24,"created_at":"2016-12-13T23:29:27.000Z","updated_at":"2026-05-04T19:31:08.000Z","published_at":"2016-12-13T23:29:27.000Z","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 larger and smaller matrix, perform element-by-element multiplication on the smaller matrix and a sub-matrix of the larger matrix with a given offset. Return that matrix. For example, given\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[ m =\\n   [ 17  24   1   8  15\\n     23   5   7  14  16\\n      4   6  13  20  22\\n     10  12  19  21   3\\n     11  18  25   2   9 ]]]\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\u003eand\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[ n =\\n   [ 1 1 1\\n     1 1 1 ]]]\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\u003eand o = [2 3], the result would be\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[    7  14  16\\n   13  20  22]]\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\u003eThe overlap of the two matrices will always be valid, so [4 5] would not be a valid offset for this example problem.\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":"Matrix Manipulation III","count":1,"selected":false}],[{"value":"medium","count":1,"selected":false}]],"term":"tag:\"submatrix\"","page":1,"per_page":50,"sort":"map(difficulty_value,0,0,999) asc"}}