{"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":1373,"title":"Periodic Table II 101.","description":"Given the symbol of an element, return its atomic number. This is the continuation of \u003chttp://www.mathworks.com/matlabcentral/cody/problems/1361-periodic-table-101 problem 1361\u003e.","description_html":"\u003cp\u003eGiven the symbol of an element, return its atomic number. This is the continuation of \u003ca href = \"http://www.mathworks.com/matlabcentral/cody/problems/1361-periodic-table-101\"\u003eproblem 1361\u003c/a\u003e.\u003c/p\u003e","function_template":"function y = atomicNumber2(s)\r\n  y = 1;\r\nend","test_suite":"%%\r\ns = 'Cl';\r\ny_correct = 17;\r\nassert(isequal(atomicNumber2(s),y_correct))\r\n\r\n%%\r\ns = 'Au';\r\ny_correct = 79;\r\nassert(isequal(atomicNumber2(s),y_correct))\r\n\r\n%%\r\ns = 'Dy';\r\ny_correct = 66;\r\nassert(isequal(atomicNumber2(s),y_correct))\r\n\r\n%%\r\ns = 'O';\r\ny_correct = 8;\r\nassert(isequal(atomicNumber2(s),y_correct))\r\n\r\n%%\r\ns = 'Ge';\r\ny_correct = 32;\r\nassert(isequal(atomicNumber2(s),y_correct))\r\n\r\n%%\r\ns = 'Uut';\r\ny_correct = 113;\r\nassert(isequal(atomicNumber2(s),y_correct))\r\n\r\n%%\r\ns = 'C';\r\ny_correct = 6;\r\nassert(isequal(atomicNumber2(s),y_correct))\r\n\r\n%%\r\ns = 'Xe';\r\ny_correct = 54;\r\nassert(isequal(atomicNumber2(s),y_correct))\r\n\r\n%%\r\ns = 'Hg';\r\ny_correct = 80;\r\nassert(isequal(atomicNumber2(s),y_correct))","published":true,"deleted":false,"likes_count":1,"comments_count":3,"created_by":810,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":52,"test_suite_updated_at":"2013-03-22T02:10:08.000Z","rescore_all_solutions":false,"group_id":1,"created_at":"2013-03-22T02:01:10.000Z","updated_at":"2026-05-26T16:51:09.000Z","published_at":"2013-03-22T02:10:08.000Z","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 the symbol of an element, return its atomic number. This is the continuation of\u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:t\u003e \u003c/w:t\u003e\u003c/w:r\u003e\u003cw:hyperlink w:docLocation=\\\"http://www.mathworks.com/matlabcentral/cody/problems/1361-periodic-table-101\\\"\u003e\u003cw:r\u003e\u003cw:t\u003eproblem 1361\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:hyperlink\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\"}]}"},{"id":1361,"title":"Periodic Table 101.","description":"Given the atomic number (z), answer the symbol for that particular element of the \u003chttp://en.wikipedia.org/wiki/Periodic_table/ periodic table\u003e.","description_html":"\u003cp\u003eGiven the atomic number (z), answer the symbol for that particular element of the \u003ca href = \"http://en.wikipedia.org/wiki/Periodic_table/\"\u003eperiodic table\u003c/a\u003e.\u003c/p\u003e","function_template":"function symbol = atomicNumber(z)\r\n  symbol = 'H';\r\nend","test_suite":"%%\r\nz = 1;\r\ny_correct = 'H';\r\nassert(isequal(atomicNumber(z),y_correct))\r\n\r\n%%\r\nz = 3;\r\ny_correct = 'Li';\r\nassert(isequal(atomicNumber(z),y_correct))\r\n\r\n%%\r\nz = 5;\r\ny_correct = 'B';\r\nassert(isequal(atomicNumber(z),y_correct))\r\n\r\n%%\r\nz = 7;\r\ny_correct = 'N';\r\nassert(isequal(atomicNumber(z),y_correct))\r\n\r\n%%\r\nz = 22;\r\ny_correct = 'Ti';\r\nassert(isequal(atomicNumber(z),y_correct))\r\n\r\n%%\r\nz = 15;\r\ny_correct = 'P';\r\nassert(isequal(atomicNumber(z),y_correct))\r\n\r\n%%\r\nz = 13;\r\ny_correct = 'Al';\r\nassert(isequal(atomicNumber(z),y_correct))\r\n\r\n%%\r\nz = 10;\r\ny_correct = 'Ne';\r\nassert(isequal(atomicNumber(z),y_correct))\r\n","published":true,"deleted":false,"likes_count":2,"comments_count":1,"created_by":810,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":76,"test_suite_updated_at":"2013-03-19T01:22:10.000Z","rescore_all_solutions":false,"group_id":1,"created_at":"2013-03-19T01:14:51.000Z","updated_at":"2026-05-21T11:16:01.000Z","published_at":"2013-03-19T01:21:00.000Z","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 the atomic number (z), answer the symbol for that particular element of the\u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:t\u003e \u003c/w:t\u003e\u003c/w:r\u003e\u003cw:hyperlink w:docLocation=\\\"http://en.wikipedia.org/wiki/Periodic_table/\\\"\u003e\u003cw:r\u003e\u003cw:t\u003eperiodic table\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:hyperlink\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":{"problems":[{"id":1373,"title":"Periodic Table II 101.","description":"Given the symbol of an element, return its atomic number. This is the continuation of \u003chttp://www.mathworks.com/matlabcentral/cody/problems/1361-periodic-table-101 problem 1361\u003e.","description_html":"\u003cp\u003eGiven the symbol of an element, return its atomic number. This is the continuation of \u003ca href = \"http://www.mathworks.com/matlabcentral/cody/problems/1361-periodic-table-101\"\u003eproblem 1361\u003c/a\u003e.\u003c/p\u003e","function_template":"function y = atomicNumber2(s)\r\n  y = 1;\r\nend","test_suite":"%%\r\ns = 'Cl';\r\ny_correct = 17;\r\nassert(isequal(atomicNumber2(s),y_correct))\r\n\r\n%%\r\ns = 'Au';\r\ny_correct = 79;\r\nassert(isequal(atomicNumber2(s),y_correct))\r\n\r\n%%\r\ns = 'Dy';\r\ny_correct = 66;\r\nassert(isequal(atomicNumber2(s),y_correct))\r\n\r\n%%\r\ns = 'O';\r\ny_correct = 8;\r\nassert(isequal(atomicNumber2(s),y_correct))\r\n\r\n%%\r\ns = 'Ge';\r\ny_correct = 32;\r\nassert(isequal(atomicNumber2(s),y_correct))\r\n\r\n%%\r\ns = 'Uut';\r\ny_correct = 113;\r\nassert(isequal(atomicNumber2(s),y_correct))\r\n\r\n%%\r\ns = 'C';\r\ny_correct = 6;\r\nassert(isequal(atomicNumber2(s),y_correct))\r\n\r\n%%\r\ns = 'Xe';\r\ny_correct = 54;\r\nassert(isequal(atomicNumber2(s),y_correct))\r\n\r\n%%\r\ns = 'Hg';\r\ny_correct = 80;\r\nassert(isequal(atomicNumber2(s),y_correct))","published":true,"deleted":false,"likes_count":1,"comments_count":3,"created_by":810,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":52,"test_suite_updated_at":"2013-03-22T02:10:08.000Z","rescore_all_solutions":false,"group_id":1,"created_at":"2013-03-22T02:01:10.000Z","updated_at":"2026-05-26T16:51:09.000Z","published_at":"2013-03-22T02:10:08.000Z","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 the symbol of an element, return its atomic number. This is the continuation of\u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:t\u003e \u003c/w:t\u003e\u003c/w:r\u003e\u003cw:hyperlink w:docLocation=\\\"http://www.mathworks.com/matlabcentral/cody/problems/1361-periodic-table-101\\\"\u003e\u003cw:r\u003e\u003cw:t\u003eproblem 1361\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:hyperlink\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\"}]}"},{"id":1361,"title":"Periodic Table 101.","description":"Given the atomic number (z), answer the symbol for that particular element of the \u003chttp://en.wikipedia.org/wiki/Periodic_table/ periodic table\u003e.","description_html":"\u003cp\u003eGiven the atomic number (z), answer the symbol for that particular element of the \u003ca href = \"http://en.wikipedia.org/wiki/Periodic_table/\"\u003eperiodic table\u003c/a\u003e.\u003c/p\u003e","function_template":"function symbol = atomicNumber(z)\r\n  symbol = 'H';\r\nend","test_suite":"%%\r\nz = 1;\r\ny_correct = 'H';\r\nassert(isequal(atomicNumber(z),y_correct))\r\n\r\n%%\r\nz = 3;\r\ny_correct = 'Li';\r\nassert(isequal(atomicNumber(z),y_correct))\r\n\r\n%%\r\nz = 5;\r\ny_correct = 'B';\r\nassert(isequal(atomicNumber(z),y_correct))\r\n\r\n%%\r\nz = 7;\r\ny_correct = 'N';\r\nassert(isequal(atomicNumber(z),y_correct))\r\n\r\n%%\r\nz = 22;\r\ny_correct = 'Ti';\r\nassert(isequal(atomicNumber(z),y_correct))\r\n\r\n%%\r\nz = 15;\r\ny_correct = 'P';\r\nassert(isequal(atomicNumber(z),y_correct))\r\n\r\n%%\r\nz = 13;\r\ny_correct = 'Al';\r\nassert(isequal(atomicNumber(z),y_correct))\r\n\r\n%%\r\nz = 10;\r\ny_correct = 'Ne';\r\nassert(isequal(atomicNumber(z),y_correct))\r\n","published":true,"deleted":false,"likes_count":2,"comments_count":1,"created_by":810,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":76,"test_suite_updated_at":"2013-03-19T01:22:10.000Z","rescore_all_solutions":false,"group_id":1,"created_at":"2013-03-19T01:14:51.000Z","updated_at":"2026-05-21T11:16:01.000Z","published_at":"2013-03-19T01:21:00.000Z","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 the atomic number (z), answer the symbol for that particular element of the\u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:t\u003e \u003c/w:t\u003e\u003c/w:r\u003e\u003cw:hyperlink w:docLocation=\\\"http://en.wikipedia.org/wiki/Periodic_table/\\\"\u003e\u003cw:r\u003e\u003cw:t\u003eperiodic table\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:hyperlink\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\"}]}"}],"errors":[],"facets":[[],[{"value":"medium","count":2,"selected":false}]],"term":"tag:\"atomic number\"","page":1,"per_page":50,"sort":"map(difficulty_value,0,0,999) asc"}}