{"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":44546,"title":"Calculating the total earnings of a factory","description":"The row vector, prods contains the number of various products manufactured per hour. The second row vector, prices holds values for the corresponding item prices they sell the given product for. Given the factory generates operates on a 6-day work week and two 8-hour long shifts per day, find the total earnings.","description_html":"\u003cp\u003eThe row vector, prods contains the number of various products manufactured per hour. The second row vector, prices holds values for the corresponding item prices they sell the given product for. Given the factory generates operates on a 6-day work week and two 8-hour long shifts per day, find the total earnings.\u003c/p\u003e","function_template":"function earn = earnings(rate, price)\r\n    earn= (); % use your basic knowledge of matrix multiplication\r\nend","test_suite":"%%\r\nrate = [2,5,4];\r\nprice = [8,3,1];\r\ny_correct = 3360;\r\nassert(isequal(earnings(rate,price),3360))\r\n%%\r\nrate = [1,4];\r\nprice = [2,1];\r\ny_correct = 576;\r\nassert(isequal(earnings(rate,price),576))\r\n%%\r\nrate = [6 6 2 3 2 8];\r\nprice = [3 2 4 8 9 5];\r\ny_correct = 11520;\r\nassert(isequal(earnings(rate,price),11520))","published":true,"deleted":false,"likes_count":1,"comments_count":0,"created_by":171559,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":57,"test_suite_updated_at":null,"rescore_all_solutions":false,"group_id":1,"created_at":"2018-03-31T09:16:35.000Z","updated_at":"2026-02-11T11:25:03.000Z","published_at":"2018-03-31T09:16:35.000Z","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\u003eThe row vector, prods contains the number of various products manufactured per hour. The second row vector, prices holds values for the corresponding item prices they sell the given product for. Given the factory generates operates on a 6-day work week and two 8-hour long shifts per day, find the total earnings.\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":44156,"title":"Weighted average","description":"Compute the weighted average Y, of the vector A, given the weight vector W.\r\n\r\nThe weighted average is the sum of the dot product of A and W, normalized by the sum of W.\r\n\r\nExample 1:\r\n\r\n  A = [10 15 20 10];\r\n  W = [ 1  1  1  1];\r\n  Y = 13.75\r\n\r\nExample 2:\r\n\r\n  A = [  10    15   20   10];\r\n  W = [0.25  0.25 0.25 0.25];\r\n  Y = 13.75\r\n\r\nExample 3:\r\n\r\n  A = [10 15 20 10];\r\n  W = [ 2  4  4  2];\r\n  Y = 15","description_html":"\u003cp\u003eCompute the weighted average Y, of the vector A, given the weight vector W.\u003c/p\u003e\u003cp\u003eThe weighted average is the sum of the dot product of A and W, normalized by the sum of W.\u003c/p\u003e\u003cp\u003eExample 1:\u003c/p\u003e\u003cpre class=\"language-matlab\"\u003eA = [10 15 20 10];\r\nW = [ 1  1  1  1];\r\nY = 13.75\r\n\u003c/pre\u003e\u003cp\u003eExample 2:\u003c/p\u003e\u003cpre class=\"language-matlab\"\u003eA = [  10    15   20   10];\r\nW = [0.25  0.25 0.25 0.25];\r\nY = 13.75\r\n\u003c/pre\u003e\u003cp\u003eExample 3:\u003c/p\u003e\u003cpre class=\"language-matlab\"\u003eA = [10 15 20 10];\r\nW = [ 2  4  4  2];\r\nY = 15\r\n\u003c/pre\u003e","function_template":"function Y = weighted_average(A,W)\r\n  Y = A;\r\nend","test_suite":"%%\r\nA = [10 15 20 10];\r\nW = [ 1  1  1  1];\r\nY = 13.75\r\nassert(isequal(weighted_average(A,W),Y))\r\n\r\n%%\r\nA = [  10    15   20   10];\r\nW = [0.25  0.25 0.25 0.25];\r\nY = 13.75\r\nassert(isequal(weighted_average(A,W),Y))\r\n\r\n%%\r\nA = [10 15 20 10];\r\nW = [ 2  4  4  2];\r\nY = 15\r\nassert(isequal(weighted_average(A,W),Y))\r\n\r\n%%\r\nassert(~any(strfind(lower(fileread('weighted_average.m')),'regexp')))\r\n\r\n%%\r\nassert(~any(strfind(lower(fileread('weighted_average.m')),'feval')))\r\n\r\n%%\r\nassert(~any(strfind(lower(fileread('weighted_average.m')),'eval')))","published":true,"deleted":false,"likes_count":2,"comments_count":0,"created_by":130819,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":118,"test_suite_updated_at":null,"rescore_all_solutions":false,"group_id":1,"created_at":"2017-05-04T14:38:26.000Z","updated_at":"2026-04-03T03:15:25.000Z","published_at":"2017-05-04T14:38:26.000Z","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\u003eCompute the weighted average Y, of the vector A, given the weight vector W.\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 weighted average is the sum of the dot product of A and W, normalized by the sum of W.\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 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[A = [10 15 20 10];\\nW = [ 1  1  1  1];\\nY = 13.75]]\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\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[A = [  10    15   20   10];\\nW = [0.25  0.25 0.25 0.25];\\nY = 13.75]]\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\u003eExample 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[A = [10 15 20 10];\\nW = [ 2  4  4  2];\\nY = 15]]\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":44546,"title":"Calculating the total earnings of a factory","description":"The row vector, prods contains the number of various products manufactured per hour. The second row vector, prices holds values for the corresponding item prices they sell the given product for. Given the factory generates operates on a 6-day work week and two 8-hour long shifts per day, find the total earnings.","description_html":"\u003cp\u003eThe row vector, prods contains the number of various products manufactured per hour. The second row vector, prices holds values for the corresponding item prices they sell the given product for. Given the factory generates operates on a 6-day work week and two 8-hour long shifts per day, find the total earnings.\u003c/p\u003e","function_template":"function earn = earnings(rate, price)\r\n    earn= (); % use your basic knowledge of matrix multiplication\r\nend","test_suite":"%%\r\nrate = [2,5,4];\r\nprice = [8,3,1];\r\ny_correct = 3360;\r\nassert(isequal(earnings(rate,price),3360))\r\n%%\r\nrate = [1,4];\r\nprice = [2,1];\r\ny_correct = 576;\r\nassert(isequal(earnings(rate,price),576))\r\n%%\r\nrate = [6 6 2 3 2 8];\r\nprice = [3 2 4 8 9 5];\r\ny_correct = 11520;\r\nassert(isequal(earnings(rate,price),11520))","published":true,"deleted":false,"likes_count":1,"comments_count":0,"created_by":171559,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":57,"test_suite_updated_at":null,"rescore_all_solutions":false,"group_id":1,"created_at":"2018-03-31T09:16:35.000Z","updated_at":"2026-02-11T11:25:03.000Z","published_at":"2018-03-31T09:16:35.000Z","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\u003eThe row vector, prods contains the number of various products manufactured per hour. The second row vector, prices holds values for the corresponding item prices they sell the given product for. Given the factory generates operates on a 6-day work week and two 8-hour long shifts per day, find the total earnings.\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":44156,"title":"Weighted average","description":"Compute the weighted average Y, of the vector A, given the weight vector W.\r\n\r\nThe weighted average is the sum of the dot product of A and W, normalized by the sum of W.\r\n\r\nExample 1:\r\n\r\n  A = [10 15 20 10];\r\n  W = [ 1  1  1  1];\r\n  Y = 13.75\r\n\r\nExample 2:\r\n\r\n  A = [  10    15   20   10];\r\n  W = [0.25  0.25 0.25 0.25];\r\n  Y = 13.75\r\n\r\nExample 3:\r\n\r\n  A = [10 15 20 10];\r\n  W = [ 2  4  4  2];\r\n  Y = 15","description_html":"\u003cp\u003eCompute the weighted average Y, of the vector A, given the weight vector W.\u003c/p\u003e\u003cp\u003eThe weighted average is the sum of the dot product of A and W, normalized by the sum of W.\u003c/p\u003e\u003cp\u003eExample 1:\u003c/p\u003e\u003cpre class=\"language-matlab\"\u003eA = [10 15 20 10];\r\nW = [ 1  1  1  1];\r\nY = 13.75\r\n\u003c/pre\u003e\u003cp\u003eExample 2:\u003c/p\u003e\u003cpre class=\"language-matlab\"\u003eA = [  10    15   20   10];\r\nW = [0.25  0.25 0.25 0.25];\r\nY = 13.75\r\n\u003c/pre\u003e\u003cp\u003eExample 3:\u003c/p\u003e\u003cpre class=\"language-matlab\"\u003eA = [10 15 20 10];\r\nW = [ 2  4  4  2];\r\nY = 15\r\n\u003c/pre\u003e","function_template":"function Y = weighted_average(A,W)\r\n  Y = A;\r\nend","test_suite":"%%\r\nA = [10 15 20 10];\r\nW = [ 1  1  1  1];\r\nY = 13.75\r\nassert(isequal(weighted_average(A,W),Y))\r\n\r\n%%\r\nA = [  10    15   20   10];\r\nW = [0.25  0.25 0.25 0.25];\r\nY = 13.75\r\nassert(isequal(weighted_average(A,W),Y))\r\n\r\n%%\r\nA = [10 15 20 10];\r\nW = [ 2  4  4  2];\r\nY = 15\r\nassert(isequal(weighted_average(A,W),Y))\r\n\r\n%%\r\nassert(~any(strfind(lower(fileread('weighted_average.m')),'regexp')))\r\n\r\n%%\r\nassert(~any(strfind(lower(fileread('weighted_average.m')),'feval')))\r\n\r\n%%\r\nassert(~any(strfind(lower(fileread('weighted_average.m')),'eval')))","published":true,"deleted":false,"likes_count":2,"comments_count":0,"created_by":130819,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":118,"test_suite_updated_at":null,"rescore_all_solutions":false,"group_id":1,"created_at":"2017-05-04T14:38:26.000Z","updated_at":"2026-04-03T03:15:25.000Z","published_at":"2017-05-04T14:38:26.000Z","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\u003eCompute the weighted average Y, of the vector A, given the weight vector W.\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 weighted average is the sum of the dot product of A and W, normalized by the sum of W.\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 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[A = [10 15 20 10];\\nW = [ 1  1  1  1];\\nY = 13.75]]\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\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[A = [  10    15   20   10];\\nW = [0.25  0.25 0.25 0.25];\\nY = 13.75]]\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\u003eExample 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[A = [10 15 20 10];\\nW = [ 2  4  4  2];\\nY = 15]]\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\"}]}"}],"term":"tag:\"matrix multiplication\"","current_player_id":null,"fields":[{"name":"page","type":"integer","callback":null,"default":1,"directive":null,"facet":null,"facet_method":"and","operator":null,"param":null,"static":null,"prepend":true},{"name":"per_page","type":"integer","callback":null,"default":50,"directive":null,"facet":null,"facet_method":"and","operator":null,"param":null,"static":null,"prepend":true},{"name":"sort","type":"string","callback":null,"default":null,"directive":null,"facet":null,"facet_method":"and","operator":null,"param":null,"static":null,"prepend":true},{"name":"body","type":"text","callback":null,"default":"*:*","directive":null,"facet":null,"facet_method":"and","operator":null,"param":"term","static":null,"prepend":false},{"name":"group","type":"string","callback":null,"default":null,"directive":"group","facet":true,"facet_method":"and","operator":null,"param":"term","static":null,"prepend":true},{"name":"difficulty_rating_bin","type":"string","callback":null,"default":null,"directive":"difficulty_rating_bin","facet":true,"facet_method":"and","operator":null,"param":"term","static":null,"prepend":true},{"name":"id","type":"integer","callback":null,"default":null,"directive":"id","facet":null,"facet_method":"and","operator":null,"param":"term","static":null,"prepend":true},{"name":"tag","type":"string","callback":null,"default":null,"directive":"tag","facet":null,"facet_method":"and","operator":null,"param":"term","static":null,"prepend":true},{"name":"product","type":"string","callback":null,"default":null,"directive":"product","facet":null,"facet_method":"and","operator":null,"param":"term","static":null,"prepend":true},{"name":"created_at","type":"timeframe","callback":{},"default":null,"directive":"created_at","facet":null,"facet_method":"and","operator":null,"param":"term","static":null,"prepend":true},{"name":"profile_id","type":"integer","callback":null,"default":null,"directive":"author_id","facet":null,"facet_method":"and","operator":null,"param":"term","static":null,"prepend":true},{"name":"created_by","type":"string","callback":null,"default":null,"directive":"author","facet":null,"facet_method":"and","operator":null,"param":"term","static":null,"prepend":true},{"name":"player_id","type":"integer","callback":null,"default":null,"directive":"solver_id","facet":null,"facet_method":"and","operator":null,"param":"term","static":null,"prepend":true},{"name":"player","type":"string","callback":null,"default":null,"directive":"solver","facet":null,"facet_method":"and","operator":null,"param":"term","static":null,"prepend":true},{"name":"solvers_count","type":"integer","callback":null,"default":null,"directive":"solvers_count","facet":null,"facet_method":"and","operator":null,"param":"term","static":null,"prepend":true},{"name":"comments_count","type":"integer","callback":null,"default":null,"directive":"comments_count","facet":null,"facet_method":"and","operator":null,"param":"term","static":null,"prepend":true},{"name":"likes_count","type":"integer","callback":null,"default":null,"directive":"likes_count","facet":null,"facet_method":"and","operator":null,"param":"term","static":null,"prepend":true},{"name":"leader_id","type":"integer","callback":null,"default":null,"directive":"leader_id","facet":null,"facet_method":"and","operator":null,"param":"term","static":null,"prepend":true},{"name":"leading_solution","type":"integer","callback":null,"default":null,"directive":"leading_solution","facet":null,"facet_method":"and","operator":null,"param":"term","static":null,"prepend":true}],"filters":[{"name":"asset_type","type":"string","callback":null,"default":null,"directive":null,"facet":null,"facet_method":"and","operator":null,"param":null,"static":"\"cody:problem\"","prepend":true},{"name":"profile_id","type":"integer","callback":{},"default":null,"directive":null,"facet":null,"facet_method":"and","operator":null,"param":"author_id","static":null,"prepend":true}],"query":{"params":{"per_page":50,"term":"tag:\"matrix multiplication\"","current_player":null,"sort":"map(difficulty_value,0,0,999) asc"},"parser":"MathWorks::Search::Solr::QueryParser","directives":{"term":{"directives":{"tag":[["tag:\"matrix multiplication\"","","\"","matrix multiplication","\""]]}}},"facets":{"#\u003cMathWorks::Search::Field:0x00007f73637ebb88\u003e":null,"#\u003cMathWorks::Search::Field:0x00007f73637ebae8\u003e":null},"filters":{"#\u003cMathWorks::Search::Field:0x00007f73637e8848\u003e":"\"cody:problem\""},"fields":{"#\u003cMathWorks::Search::Field:0x00007f73637ebe08\u003e":1,"#\u003cMathWorks::Search::Field:0x00007f73637ebd68\u003e":50,"#\u003cMathWorks::Search::Field:0x00007f73637ebcc8\u003e":"map(difficulty_value,0,0,999) asc","#\u003cMathWorks::Search::Field:0x00007f73637ebc28\u003e":"tag:\"matrix multiplication\""},"user_query":{"#\u003cMathWorks::Search::Field:0x00007f73637ebc28\u003e":"tag:\"matrix multiplication\""},"queried_facets":{}},"query_backend":{"connection":{"configuration":{"index_url":"http://index-op-v2/solr/","query_url":"http://search-op-v2/solr/","direct_access_index_urls":["http://index-op-v2/solr/"],"direct_access_query_urls":["http://search-op-v2/solr/"],"timeout":10,"vhost":"search","exchange":"search.topic","heartbeat":30,"pre_index_mode":false,"host":"rabbitmq-eks","port":5672,"username":"search","password":"J3bGPZzQ7asjJcCk","virtual_host":"search","indexer":"amqp","http_logging":"true","core":"cody"},"query_connection":{"uri":"http://search-op-v2/solr/cody/","proxy":null,"connection":{"parallel_manager":null,"headers":{"User-Agent":"Faraday v1.0.1"},"params":{},"options":{"params_encoder":"Faraday::FlatParamsEncoder","proxy":null,"bind":null,"timeout":null,"open_timeout":null,"read_timeout":null,"write_timeout":null,"boundary":null,"oauth":null,"context":null,"on_data":null},"ssl":{"verify":true,"ca_file":null,"ca_path":null,"verify_mode":null,"cert_store":null,"client_cert":null,"client_key":null,"certificate":null,"private_key":null,"verify_depth":null,"version":null,"min_version":null,"max_version":null},"default_parallel_manager":null,"builder":{"adapter":{"name":"Faraday::Adapter::NetHttp","args":[],"block":null},"handlers":[{"name":"Faraday::Response::RaiseError","args":[],"block":null}],"app":{"app":{"ssl_cert_store":{"verify_callback":null,"error":null,"error_string":null,"chain":null,"time":null},"app":{},"connection_options":{},"config_block":null}}},"url_prefix":"http://search-op-v2/solr/cody/","manual_proxy":false,"proxy":null},"update_format":"RSolr::JSON::Generator","update_path":"update","options":{"url":"http://search-op-v2/solr/cody"}}},"query":{"params":{"per_page":50,"term":"tag:\"matrix multiplication\"","current_player":null,"sort":"map(difficulty_value,0,0,999) asc"},"parser":"MathWorks::Search::Solr::QueryParser","directives":{"term":{"directives":{"tag":[["tag:\"matrix multiplication\"","","\"","matrix multiplication","\""]]}}},"facets":{"#\u003cMathWorks::Search::Field:0x00007f73637ebb88\u003e":null,"#\u003cMathWorks::Search::Field:0x00007f73637ebae8\u003e":null},"filters":{"#\u003cMathWorks::Search::Field:0x00007f73637e8848\u003e":"\"cody:problem\""},"fields":{"#\u003cMathWorks::Search::Field:0x00007f73637ebe08\u003e":1,"#\u003cMathWorks::Search::Field:0x00007f73637ebd68\u003e":50,"#\u003cMathWorks::Search::Field:0x00007f73637ebcc8\u003e":"map(difficulty_value,0,0,999) asc","#\u003cMathWorks::Search::Field:0x00007f73637ebc28\u003e":"tag:\"matrix multiplication\""},"user_query":{"#\u003cMathWorks::Search::Field:0x00007f73637ebc28\u003e":"tag:\"matrix multiplication\""},"queried_facets":{}},"options":{"fields":["id","difficulty_rating"]},"join":" "},"results":[{"id":44546,"difficulty_rating":"easy"},{"id":44156,"difficulty_rating":"easy"}]}}