{"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":2468,"title":"Calculate the h-index","description":"H-index is a powerful tool for quantifying the scientific contribution of a researcher. H-index is defined as follows (source - wikipedia):\r\n\r\n\"a scholar with an index of h has published h papers each of which has been cited in other papers at least h times\".\r\n\r\nIn this problem, citations of published works of an author will be provided as a vector. Each element of the vector denotes the number of citations of a specific paper of the author. Calculate the h-index.\r\n\r\nExample:\r\n\r\nInput = [3 3 2 1];\r\nOutput = 2","description_html":"\u003cp\u003eH-index is a powerful tool for quantifying the scientific contribution of a researcher. H-index is defined as follows (source - wikipedia):\u003c/p\u003e\u003cp\u003e\"a scholar with an index of h has published h papers each of which has been cited in other papers at least h times\".\u003c/p\u003e\u003cp\u003eIn this problem, citations of published works of an author will be provided as a vector. Each element of the vector denotes the number of citations of a specific paper of the author. Calculate the h-index.\u003c/p\u003e\u003cp\u003eExample:\u003c/p\u003e\u003cp\u003eInput = [3 3 2 1];\r\nOutput = 2\u003c/p\u003e","function_template":"function y = hIndex(x)\r\n\r\nend","test_suite":"%%\r\nx = [3 3 2 1];\r\ny_correct = 2;\r\nassert(isequal(hIndex(x),y_correct))\r\n\r\n%%\r\nx = 4*ones(1,4);\r\ny_correct = 4;\r\nassert(isequal(hIndex(x),y_correct))\r\n\r\n%%\r\nx = zeros(1,1000);\r\ny_correct = 0;\r\nassert(isequal(hIndex(x),y_correct))\r\n\r\n\r\n%%\r\nx = [5 2 10 11 2 7 9 10 7];\r\ny_correct = 6;\r\nassert(isequal(hIndex(x),y_correct))","published":true,"deleted":false,"likes_count":2,"comments_count":0,"created_by":17203,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":51,"test_suite_updated_at":"2014-07-29T07:17:31.000Z","rescore_all_solutions":false,"group_id":1,"created_at":"2014-07-29T03:48:01.000Z","updated_at":"2026-05-28T03:05:51.000Z","published_at":"2014-07-29T03:48:01.000Z","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\u003eH-index is a powerful tool for quantifying the scientific contribution of a researcher. H-index is defined as follows (source - wikipedia):\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003e\\\"a scholar with an index of h has published h papers each of which has been cited in other papers at least h times\\\".\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eIn this problem, citations of published works of an author will be provided as a vector. Each element of the vector denotes the number of citations of a specific paper of the author. Calculate the h-index.\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eExample:\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eInput = [3 3 2 1]; Output = 2\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":2468,"title":"Calculate the h-index","description":"H-index is a powerful tool for quantifying the scientific contribution of a researcher. H-index is defined as follows (source - wikipedia):\r\n\r\n\"a scholar with an index of h has published h papers each of which has been cited in other papers at least h times\".\r\n\r\nIn this problem, citations of published works of an author will be provided as a vector. Each element of the vector denotes the number of citations of a specific paper of the author. Calculate the h-index.\r\n\r\nExample:\r\n\r\nInput = [3 3 2 1];\r\nOutput = 2","description_html":"\u003cp\u003eH-index is a powerful tool for quantifying the scientific contribution of a researcher. H-index is defined as follows (source - wikipedia):\u003c/p\u003e\u003cp\u003e\"a scholar with an index of h has published h papers each of which has been cited in other papers at least h times\".\u003c/p\u003e\u003cp\u003eIn this problem, citations of published works of an author will be provided as a vector. Each element of the vector denotes the number of citations of a specific paper of the author. Calculate the h-index.\u003c/p\u003e\u003cp\u003eExample:\u003c/p\u003e\u003cp\u003eInput = [3 3 2 1];\r\nOutput = 2\u003c/p\u003e","function_template":"function y = hIndex(x)\r\n\r\nend","test_suite":"%%\r\nx = [3 3 2 1];\r\ny_correct = 2;\r\nassert(isequal(hIndex(x),y_correct))\r\n\r\n%%\r\nx = 4*ones(1,4);\r\ny_correct = 4;\r\nassert(isequal(hIndex(x),y_correct))\r\n\r\n%%\r\nx = zeros(1,1000);\r\ny_correct = 0;\r\nassert(isequal(hIndex(x),y_correct))\r\n\r\n\r\n%%\r\nx = [5 2 10 11 2 7 9 10 7];\r\ny_correct = 6;\r\nassert(isequal(hIndex(x),y_correct))","published":true,"deleted":false,"likes_count":2,"comments_count":0,"created_by":17203,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":51,"test_suite_updated_at":"2014-07-29T07:17:31.000Z","rescore_all_solutions":false,"group_id":1,"created_at":"2014-07-29T03:48:01.000Z","updated_at":"2026-05-28T03:05:51.000Z","published_at":"2014-07-29T03:48:01.000Z","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\u003eH-index is a powerful tool for quantifying the scientific contribution of a researcher. H-index is defined as follows (source - wikipedia):\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003e\\\"a scholar with an index of h has published h papers each of which has been cited in other papers at least h times\\\".\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eIn this problem, citations of published works of an author will be provided as a vector. Each element of the vector denotes the number of citations of a specific paper of the author. Calculate the h-index.\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eExample:\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eInput = [3 3 2 1]; Output = 2\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":1,"selected":false}]],"term":"tag:\"histc\"","page":1,"per_page":50,"sort":"map(difficulty_value,0,0,999) asc"}}