{"group":{"id":1,"name":"Community","lockable":false,"created_at":"2012-01-18T18:02:15.000Z","updated_at":"2026-04-16T00:12:35.000Z","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":"2026-04-16T00:00:00.000Z","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":2336,"title":"Calendar Matrix","description":"Return a calendar matrix for the given values of month and year. Assume that Sunday is the first day of the week. The resulting calendar month will have seven columns and only as many rows (weeks) as needed to display all days of the month. Thus it might have either 4, 5, or 6 rows. Days preceding the first of the month or following the last of the month are given by zeros.\r\n\r\nExamples\r\n\r\n \u003e\u003e mo = 1\r\n \u003e\u003e yr = 2014\r\n \u003e\u003e momat = makeCalendar(mo,yr)\r\n\r\n     0     0     0     1     2     3     4\r\n     5     6     7     8     9    10    11\r\n    12    13    14    15    16    17    18\r\n    19    20    21    22    23    24    25\r\n    26    27    28    29    30    31     0\r\n\r\n \u003e\u003e mo = 2\r\n \u003e\u003e yr = 2015\r\n \u003e\u003e momat = makeCalendar(mo,yr)\r\n\r\n     1     2     3     4     5     6     7\r\n     8     9    10    11    12    13    14\r\n    15    16    17    18    19    20    21\r\n    22    23    24    25    26    27    28\r\n\r\n\r\n \u003e\u003e mo = 10\r\n \u003e\u003e yr = 2010\r\n \u003e\u003e momat = makeCalendar(mo,yr)\r\n\r\n     0     0     0     0     0     1     2\r\n     3     4     5     6     7     8     9\r\n    10    11    12    13    14    15    16\r\n    17    18    19    20    21    22    23\r\n    24    25    26    27    28    29    30\r\n    31     0     0     0     0     0     0","description_html":"\u003cp\u003eReturn a calendar matrix for the given values of month and year. Assume that Sunday is the first day of the week. The resulting calendar month will have seven columns and only as many rows (weeks) as needed to display all days of the month. Thus it might have either 4, 5, or 6 rows. Days preceding the first of the month or following the last of the month are given by zeros.\u003c/p\u003e\u003cp\u003eExamples\u003c/p\u003e\u003cpre\u003e \u0026gt;\u0026gt; mo = 1\r\n \u0026gt;\u0026gt; yr = 2014\r\n \u0026gt;\u0026gt; momat = makeCalendar(mo,yr)\u003c/pre\u003e\u003cpre\u003e     0     0     0     1     2     3     4\r\n     5     6     7     8     9    10    11\r\n    12    13    14    15    16    17    18\r\n    19    20    21    22    23    24    25\r\n    26    27    28    29    30    31     0\u003c/pre\u003e\u003cpre\u003e \u0026gt;\u0026gt; mo = 2\r\n \u0026gt;\u0026gt; yr = 2015\r\n \u0026gt;\u0026gt; momat = makeCalendar(mo,yr)\u003c/pre\u003e\u003cpre\u003e     1     2     3     4     5     6     7\r\n     8     9    10    11    12    13    14\r\n    15    16    17    18    19    20    21\r\n    22    23    24    25    26    27    28\u003c/pre\u003e\u003cpre\u003e \u0026gt;\u0026gt; mo = 10\r\n \u0026gt;\u0026gt; yr = 2010\r\n \u0026gt;\u0026gt; momat = makeCalendar(mo,yr)\u003c/pre\u003e\u003cpre\u003e     0     0     0     0     0     1     2\r\n     3     4     5     6     7     8     9\r\n    10    11    12    13    14    15    16\r\n    17    18    19    20    21    22    23\r\n    24    25    26    27    28    29    30\r\n    31     0     0     0     0     0     0\u003c/pre\u003e","function_template":"function momat = makeCalendar(mo,yr)\r\n  momat = 0;\r\nend","test_suite":"%%\r\n\r\nmo = 1;\r\nyr = 2014;\r\nmomat = makeCalendar(mo,yr);\r\nmomat_correct = [ ...\r\n     0     0     0     1     2     3     4\r\n     5     6     7     8     9    10    11\r\n    12    13    14    15    16    17    18\r\n    19    20    21    22    23    24    25\r\n    26    27    28    29    30    31     0];\r\nassert(isequal(momat,momat_correct)) \r\n\r\n%%\r\n\r\nmo = 2;\r\nyr = 2015;\r\nmomat = makeCalendar(mo,yr);\r\nmomat_correct = [ ...\r\n     1     2     3     4     5     6     7\r\n     8     9    10    11    12    13    14\r\n    15    16    17    18    19    20    21\r\n    22    23    24    25    26    27    28];\r\nassert(isequal(momat,momat_correct)) \r\n\r\n%%\r\n\r\nmo = 10;\r\nyr = 2010;\r\nmomat = makeCalendar(mo,yr);\r\nmomat_correct = [ ...\r\n     0     0     0     0     0     1     2\r\n     3     4     5     6     7     8     9\r\n    10    11    12    13    14    15    16\r\n    17    18    19    20    21    22    23\r\n    24    25    26    27    28    29    30\r\n    31     0     0     0     0     0     0];\r\nassert(isequal(momat,momat_correct))\r\n\r\n%%\r\n\r\nmo = 11;\r\nyr = 1972;\r\nmomat = makeCalendar(mo,yr);\r\nmomat_correct = [0 0 0 1 2 3 4;5 6 7 8 9 10 11;12 13 14 15 16 17 18;19 20 21 22 23 24 25;26 27 28 29 30 0 0];\r\n\r\nassert(isequal(momat,momat_correct))\r\n\r\n","published":true,"deleted":false,"likes_count":3,"comments_count":0,"created_by":7,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":163,"test_suite_updated_at":"2014-05-22T21:48:47.000Z","rescore_all_solutions":false,"group_id":31,"created_at":"2014-05-22T20:36:33.000Z","updated_at":"2026-04-20T07:49:50.000Z","published_at":"2014-05-22T20:47:34.000Z","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\u003eReturn a calendar matrix for the given values of month and year. Assume that Sunday is the first day of the week. The resulting calendar month will have seven columns and only as many rows (weeks) as needed to display all days of the month. Thus it might have either 4, 5, or 6 rows. Days preceding the first of the month or following the last of the month are given by zeros.\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\u003eExamples\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 mo = 1\\n \u003e\u003e yr = 2014\\n \u003e\u003e momat = makeCalendar(mo,yr)\\n\\n     0     0     0     1     2     3     4\\n     5     6     7     8     9    10    11\\n    12    13    14    15    16    17    18\\n    19    20    21    22    23    24    25\\n    26    27    28    29    30    31     0\\n\\n \u003e\u003e mo = 2\\n \u003e\u003e yr = 2015\\n \u003e\u003e momat = makeCalendar(mo,yr)\\n\\n     1     2     3     4     5     6     7\\n     8     9    10    11    12    13    14\\n    15    16    17    18    19    20    21\\n    22    23    24    25    26    27    28\\n\\n \u003e\u003e mo = 10\\n \u003e\u003e yr = 2010\\n \u003e\u003e momat = makeCalendar(mo,yr)\\n\\n     0     0     0     0     0     1     2\\n     3     4     5     6     7     8     9\\n    10    11    12    13    14    15    16\\n    17    18    19    20    21    22    23\\n    24    25    26    27    28    29    30\\n    31     0     0     0     0     0     0]]\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":2336,"title":"Calendar Matrix","description":"Return a calendar matrix for the given values of month and year. Assume that Sunday is the first day of the week. The resulting calendar month will have seven columns and only as many rows (weeks) as needed to display all days of the month. Thus it might have either 4, 5, or 6 rows. Days preceding the first of the month or following the last of the month are given by zeros.\r\n\r\nExamples\r\n\r\n \u003e\u003e mo = 1\r\n \u003e\u003e yr = 2014\r\n \u003e\u003e momat = makeCalendar(mo,yr)\r\n\r\n     0     0     0     1     2     3     4\r\n     5     6     7     8     9    10    11\r\n    12    13    14    15    16    17    18\r\n    19    20    21    22    23    24    25\r\n    26    27    28    29    30    31     0\r\n\r\n \u003e\u003e mo = 2\r\n \u003e\u003e yr = 2015\r\n \u003e\u003e momat = makeCalendar(mo,yr)\r\n\r\n     1     2     3     4     5     6     7\r\n     8     9    10    11    12    13    14\r\n    15    16    17    18    19    20    21\r\n    22    23    24    25    26    27    28\r\n\r\n\r\n \u003e\u003e mo = 10\r\n \u003e\u003e yr = 2010\r\n \u003e\u003e momat = makeCalendar(mo,yr)\r\n\r\n     0     0     0     0     0     1     2\r\n     3     4     5     6     7     8     9\r\n    10    11    12    13    14    15    16\r\n    17    18    19    20    21    22    23\r\n    24    25    26    27    28    29    30\r\n    31     0     0     0     0     0     0","description_html":"\u003cp\u003eReturn a calendar matrix for the given values of month and year. Assume that Sunday is the first day of the week. The resulting calendar month will have seven columns and only as many rows (weeks) as needed to display all days of the month. Thus it might have either 4, 5, or 6 rows. Days preceding the first of the month or following the last of the month are given by zeros.\u003c/p\u003e\u003cp\u003eExamples\u003c/p\u003e\u003cpre\u003e \u0026gt;\u0026gt; mo = 1\r\n \u0026gt;\u0026gt; yr = 2014\r\n \u0026gt;\u0026gt; momat = makeCalendar(mo,yr)\u003c/pre\u003e\u003cpre\u003e     0     0     0     1     2     3     4\r\n     5     6     7     8     9    10    11\r\n    12    13    14    15    16    17    18\r\n    19    20    21    22    23    24    25\r\n    26    27    28    29    30    31     0\u003c/pre\u003e\u003cpre\u003e \u0026gt;\u0026gt; mo = 2\r\n \u0026gt;\u0026gt; yr = 2015\r\n \u0026gt;\u0026gt; momat = makeCalendar(mo,yr)\u003c/pre\u003e\u003cpre\u003e     1     2     3     4     5     6     7\r\n     8     9    10    11    12    13    14\r\n    15    16    17    18    19    20    21\r\n    22    23    24    25    26    27    28\u003c/pre\u003e\u003cpre\u003e \u0026gt;\u0026gt; mo = 10\r\n \u0026gt;\u0026gt; yr = 2010\r\n \u0026gt;\u0026gt; momat = makeCalendar(mo,yr)\u003c/pre\u003e\u003cpre\u003e     0     0     0     0     0     1     2\r\n     3     4     5     6     7     8     9\r\n    10    11    12    13    14    15    16\r\n    17    18    19    20    21    22    23\r\n    24    25    26    27    28    29    30\r\n    31     0     0     0     0     0     0\u003c/pre\u003e","function_template":"function momat = makeCalendar(mo,yr)\r\n  momat = 0;\r\nend","test_suite":"%%\r\n\r\nmo = 1;\r\nyr = 2014;\r\nmomat = makeCalendar(mo,yr);\r\nmomat_correct = [ ...\r\n     0     0     0     1     2     3     4\r\n     5     6     7     8     9    10    11\r\n    12    13    14    15    16    17    18\r\n    19    20    21    22    23    24    25\r\n    26    27    28    29    30    31     0];\r\nassert(isequal(momat,momat_correct)) \r\n\r\n%%\r\n\r\nmo = 2;\r\nyr = 2015;\r\nmomat = makeCalendar(mo,yr);\r\nmomat_correct = [ ...\r\n     1     2     3     4     5     6     7\r\n     8     9    10    11    12    13    14\r\n    15    16    17    18    19    20    21\r\n    22    23    24    25    26    27    28];\r\nassert(isequal(momat,momat_correct)) \r\n\r\n%%\r\n\r\nmo = 10;\r\nyr = 2010;\r\nmomat = makeCalendar(mo,yr);\r\nmomat_correct = [ ...\r\n     0     0     0     0     0     1     2\r\n     3     4     5     6     7     8     9\r\n    10    11    12    13    14    15    16\r\n    17    18    19    20    21    22    23\r\n    24    25    26    27    28    29    30\r\n    31     0     0     0     0     0     0];\r\nassert(isequal(momat,momat_correct))\r\n\r\n%%\r\n\r\nmo = 11;\r\nyr = 1972;\r\nmomat = makeCalendar(mo,yr);\r\nmomat_correct = [0 0 0 1 2 3 4;5 6 7 8 9 10 11;12 13 14 15 16 17 18;19 20 21 22 23 24 25;26 27 28 29 30 0 0];\r\n\r\nassert(isequal(momat,momat_correct))\r\n\r\n","published":true,"deleted":false,"likes_count":3,"comments_count":0,"created_by":7,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":163,"test_suite_updated_at":"2014-05-22T21:48:47.000Z","rescore_all_solutions":false,"group_id":31,"created_at":"2014-05-22T20:36:33.000Z","updated_at":"2026-04-20T07:49:50.000Z","published_at":"2014-05-22T20:47:34.000Z","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\u003eReturn a calendar matrix for the given values of month and year. Assume that Sunday is the first day of the week. The resulting calendar month will have seven columns and only as many rows (weeks) as needed to display all days of the month. Thus it might have either 4, 5, or 6 rows. Days preceding the first of the month or following the last of the month are given by zeros.\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\u003eExamples\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 mo = 1\\n \u003e\u003e yr = 2014\\n \u003e\u003e momat = makeCalendar(mo,yr)\\n\\n     0     0     0     1     2     3     4\\n     5     6     7     8     9    10    11\\n    12    13    14    15    16    17    18\\n    19    20    21    22    23    24    25\\n    26    27    28    29    30    31     0\\n\\n \u003e\u003e mo = 2\\n \u003e\u003e yr = 2015\\n \u003e\u003e momat = makeCalendar(mo,yr)\\n\\n     1     2     3     4     5     6     7\\n     8     9    10    11    12    13    14\\n    15    16    17    18    19    20    21\\n    22    23    24    25    26    27    28\\n\\n \u003e\u003e mo = 10\\n \u003e\u003e yr = 2010\\n \u003e\u003e momat = makeCalendar(mo,yr)\\n\\n     0     0     0     0     0     1     2\\n     3     4     5     6     7     8     9\\n    10    11    12    13    14    15    16\\n    17    18    19    20    21    22    23\\n    24    25    26    27    28    29    30\\n    31     0     0     0     0     0     0]]\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 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