{"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":213,"title":"Create a dictionary","description":"The goal is to write a function that returns a dictionary from a list of words or phrases and their definitions. Here is an example:\r\n\r\n  \u003e\u003e words = {'do', 're', 'mi'};\r\n  \u003e\u003e definitions = {'a deer', 'a drop of golden sun', 'a name I call myself'};\r\n  \u003e\u003e dictionary = createDictionary(words, definitions);\r\n  \u003e\u003e dictionary('mi')\r\n  \r\n  ans =\r\n  \r\n  a name I call myself\r\n\r\nThe first and second arguments will always be cell strings but can contain any characters. The output must be a function handle.","description_html":"\u003cp\u003eThe goal is to write a function that returns a dictionary from a list of words or phrases and their definitions. Here is an example:\u003c/p\u003e\u003cpre class=\"language-matlab\"\u003e\u003e\u003e words = {'do', 're', 'mi'};\r\n\u003e\u003e definitions = {'a deer', 'a drop of golden sun', 'a name I call myself'};\r\n\u003e\u003e dictionary = createDictionary(words, definitions);\r\n\u003e\u003e dictionary('mi')\r\n\u003c/pre\u003e\u003cpre class=\"language-matlab\"\u003eans =\r\n\u003c/pre\u003e\u003cpre class=\"language-matlab\"\u003ea name I call myself\r\n\u003c/pre\u003e\u003cp\u003eThe first and second arguments will always be cell strings but can contain any characters. The output must be a function handle.\u003c/p\u003e","function_template":"function d = createDictionary(words, definitions)\r\n  d = @(word) 'This is a definition.';\r\nend","test_suite":"%% Simple test case\r\nwords = {'uno', 'deux', 'tre'};\r\ndefinitions = {'Spanish', 'French', 'Italian'};\r\nd = createDictionary(words, definitions);\r\norder = [2 1 3];\r\nassert(isequal(definitions(order), cellfun(d, words(order), 'UniformOutput', false)))\r\n\r\n%% Nearly identical words\r\nwords = {'CamelCase', 'camelCase', 'camel case', 'CAMELCASE'};\r\ndefinitions = {'More properly MixedCase', 'Also known as nerdCaps', ...\r\n     'A dromedary valise', 'Why are you shouting?'};\r\nd = createDictionary(words, definitions);\r\norder = [4 2 1 3];\r\nassert(isequal(definitions(order), cellfun(d, words(order), 'UniformOutput', false)))\r\n\r\n%% Words with punctuation\r\nwords = {'J.R.R. Tolkien', 'George R.R. Martin', '#!', 'Ke$ha'};\r\ndefinitions = {'LoTR', 'GoT', 'Shebang', 'Don''t ask'};\r\nd = createDictionary(words, definitions);\r\norder = [4 1 3 2];\r\nassert(isequal(definitions(order), cellfun(d, words(order), 'UniformOutput', false)))\r\n","published":true,"deleted":false,"likes_count":4,"comments_count":0,"created_by":321,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":81,"test_suite_updated_at":"2012-02-01T15:40:34.000Z","rescore_all_solutions":false,"group_id":40,"created_at":"2012-02-01T15:40:34.000Z","updated_at":"2026-04-02T20:23:25.000Z","published_at":"2012-02-01T15:40:46.000Z","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 goal is to write a function that returns a dictionary from a list of words or phrases and their definitions. Here is an example:\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[\u003e\u003e words = {'do', 're', 'mi'};\\n\u003e\u003e definitions = {'a deer', 'a drop of golden sun', 'a name I call myself'};\\n\u003e\u003e dictionary = createDictionary(words, definitions);\\n\u003e\u003e dictionary('mi')\\n\\nans =\\n\\na name I call myself]]\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 first and second arguments will always be cell strings but can contain any characters. The output must be a function handle.\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":213,"title":"Create a dictionary","description":"The goal is to write a function that returns a dictionary from a list of words or phrases and their definitions. Here is an example:\r\n\r\n  \u003e\u003e words = {'do', 're', 'mi'};\r\n  \u003e\u003e definitions = {'a deer', 'a drop of golden sun', 'a name I call myself'};\r\n  \u003e\u003e dictionary = createDictionary(words, definitions);\r\n  \u003e\u003e dictionary('mi')\r\n  \r\n  ans =\r\n  \r\n  a name I call myself\r\n\r\nThe first and second arguments will always be cell strings but can contain any characters. The output must be a function handle.","description_html":"\u003cp\u003eThe goal is to write a function that returns a dictionary from a list of words or phrases and their definitions. Here is an example:\u003c/p\u003e\u003cpre class=\"language-matlab\"\u003e\u003e\u003e words = {'do', 're', 'mi'};\r\n\u003e\u003e definitions = {'a deer', 'a drop of golden sun', 'a name I call myself'};\r\n\u003e\u003e dictionary = createDictionary(words, definitions);\r\n\u003e\u003e dictionary('mi')\r\n\u003c/pre\u003e\u003cpre class=\"language-matlab\"\u003eans =\r\n\u003c/pre\u003e\u003cpre class=\"language-matlab\"\u003ea name I call myself\r\n\u003c/pre\u003e\u003cp\u003eThe first and second arguments will always be cell strings but can contain any characters. The output must be a function handle.\u003c/p\u003e","function_template":"function d = createDictionary(words, definitions)\r\n  d = @(word) 'This is a definition.';\r\nend","test_suite":"%% Simple test case\r\nwords = {'uno', 'deux', 'tre'};\r\ndefinitions = {'Spanish', 'French', 'Italian'};\r\nd = createDictionary(words, definitions);\r\norder = [2 1 3];\r\nassert(isequal(definitions(order), cellfun(d, words(order), 'UniformOutput', false)))\r\n\r\n%% Nearly identical words\r\nwords = {'CamelCase', 'camelCase', 'camel case', 'CAMELCASE'};\r\ndefinitions = {'More properly MixedCase', 'Also known as nerdCaps', ...\r\n     'A dromedary valise', 'Why are you shouting?'};\r\nd = createDictionary(words, definitions);\r\norder = [4 2 1 3];\r\nassert(isequal(definitions(order), cellfun(d, words(order), 'UniformOutput', false)))\r\n\r\n%% Words with punctuation\r\nwords = {'J.R.R. Tolkien', 'George R.R. Martin', '#!', 'Ke$ha'};\r\ndefinitions = {'LoTR', 'GoT', 'Shebang', 'Don''t ask'};\r\nd = createDictionary(words, definitions);\r\norder = [4 1 3 2];\r\nassert(isequal(definitions(order), cellfun(d, words(order), 'UniformOutput', false)))\r\n","published":true,"deleted":false,"likes_count":4,"comments_count":0,"created_by":321,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":81,"test_suite_updated_at":"2012-02-01T15:40:34.000Z","rescore_all_solutions":false,"group_id":40,"created_at":"2012-02-01T15:40:34.000Z","updated_at":"2026-04-02T20:23:25.000Z","published_at":"2012-02-01T15:40:46.000Z","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 goal is to write a function that returns a dictionary from a list of words or phrases and their definitions. Here is an example:\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[\u003e\u003e words = {'do', 're', 'mi'};\\n\u003e\u003e definitions = {'a deer', 'a drop of golden sun', 'a name I call myself'};\\n\u003e\u003e dictionary = createDictionary(words, definitions);\\n\u003e\u003e dictionary('mi')\\n\\nans =\\n\\na name I call myself]]\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 first and second arguments will always be cell strings but can contain any characters. The output must be a function handle.\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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