{"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":44058,"title":"No more zeros","description":"Given an array with zeros at the beginning or at the end, you should get the output without these zeros: \r\n\r\n  input  = [zeros(5, 1); [1 2 5 1 0 2 5 80]'];\r\n  output = [1 2 5 1 0 2 5 80]';\r\n\r\nor\r\n\r\n  input  = [5 7 6 2 2 0 0 0 0];\r\n  output = [5 7 6 2 2];\r\n\r\n  ","description_html":"\u003cp\u003eGiven an array with zeros at the beginning or at the end, you should get the output without these zeros:\u003c/p\u003e\u003cpre class=\"language-matlab\"\u003einput  = [zeros(5, 1); [1 2 5 1 0 2 5 80]'];\r\noutput = [1 2 5 1 0 2 5 80]';\r\n\u003c/pre\u003e\u003cp\u003eor\u003c/p\u003e\u003cpre class=\"language-matlab\"\u003einput  = [5 7 6 2 2 0 0 0 0];\r\noutput = [5 7 6 2 2];\r\n\u003c/pre\u003e","function_template":"function y = without_zeros(x)\r\n  y = x;\r\nend","test_suite":"%%\r\na = zeros(5,1);\r\nb = [1 2 5 1 0 2 5 80]';\r\nx = [a; b];\r\ny_correct = b;\r\nassert(isequal(without_zeros(x),y_correct))\r\n\r\n%%\r\na = rand(1,10)+1;\r\nb = zeros(1,3);\r\nx = [a b];\r\ny_correct = a;\r\nassert(isequal(without_zeros(x),y_correct))\r\n\r\n%%\r\nx = 0:10;\r\ny_correct = 1:10;\r\nassert(isequal(without_zeros(x),y_correct))\r\n\r\n%%\r\na = 0:10;\r\nb = 1:10;\r\nx = [a zeros(1,5) fliplr(a)];\r\ny_correct = [b zeros(1,5) fliplr(b)];\r\nassert(isequal(without_zeros(x),y_correct))\r\n\r\n%%\r\nx = [0 0 0 0 1 0 0];\r\ny_correct = 1;\r\nassert(isequal(without_zeros(x),y_correct))\r\n\r\n%%\r\nx = [1 0 0 0 0 0 0];\r\ny_correct = 1;\r\nassert(isequal(without_zeros(x),y_correct))","published":true,"deleted":false,"likes_count":1,"comments_count":1,"created_by":108804,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":56,"test_suite_updated_at":"2017-02-03T16:43:25.000Z","rescore_all_solutions":false,"group_id":1,"created_at":"2017-01-28T09:40:20.000Z","updated_at":"2026-05-25T22:48:17.000Z","published_at":"2017-01-28T09:40:20.000Z","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 an array with zeros at the beginning or at the end, you should get the output without these zeros:\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[input  = [zeros(5, 1); 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