{"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":44314,"title":"A Simple Tide Gauge with MATLAB","description":"*\u0026#8767 \u0026#8767 \u0026#8767 \u0026#8767 \u0026#8767 \u0026#8767 \u0026#8767 \u0026#8767* \r\n\r\nYou are standing in a few inches of sea water on a beach.\r\n\r\nYou are wondering whether the high tide is coming soon or it has just passed. \r\n\r\nTherefore, you will write a code in MATLAB to analyze following data. \r\n\r\nYou followed the sequence of water lines left by several swash of waves. \r\n\r\nThe data array A contains the distances the water traveled past your feet during each upward swash of waves. \r\n\r\nYour code will return 1 if the high tide is coming soon. \r\n\r\nYour code will return 0 if the high tide has just passed.    \r\n","description_html":"\u003cp\u003e\u003cb\u003e\u0026#8767 \u0026#8767 \u0026#8767 \u0026#8767 \u0026#8767 \u0026#8767 \u0026#8767 \u0026#8767\u003c/b\u003e\u003c/p\u003e\u003cp\u003eYou are standing in a few inches of sea water on a beach.\u003c/p\u003e\u003cp\u003eYou are wondering whether the high tide is coming soon or it has just passed.\u003c/p\u003e\u003cp\u003eTherefore, you will write a code in MATLAB to analyze following data.\u003c/p\u003e\u003cp\u003eYou followed the sequence of water lines left by several swash of waves.\u003c/p\u003e\u003cp\u003eThe data array A contains the distances the water traveled past your feet during each upward swash of waves.\u003c/p\u003e\u003cp\u003eYour code will return 1 if the high tide is coming soon.\u003c/p\u003e\u003cp\u003eYour code will return 0 if the high tide has just passed.\u003c/p\u003e","function_template":"function tide = gauge(A)\r\n  tide=max(A)-min(A);\r\n  tide=tide*0;\r\nend","test_suite":"%%\r\nA = [5 8 10 12 8 13 14 10 10 15];\r\ntide_correct = 1;\r\nassert(isequal(gauge(A),tide_correct))\r\n%%\r\nA = [15 16 11 9 10 15 7 12 6 11 5 6];\r\ntide_correct = 0;\r\nassert(isequal(gauge(A),tide_correct))\r\n%%\r\nA = [9 15 3 9 5 18 4 17 18 19 8 13 12 21 17 24];\r\ntide_correct = 1;\r\nassert(isequal(gauge(A),tide_correct))\r\n%%\r\nA = [22 12 22 12 9 14 17 16 15 8 13 6 10 7 13 3];\r\ntide_correct = 0;\r\nassert(isequal(gauge(A),tide_correct))\r\n%%\r\n","published":true,"deleted":false,"likes_count":4,"comments_count":3,"created_by":166,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":396,"test_suite_updated_at":null,"rescore_all_solutions":false,"group_id":34,"created_at":"2017-09-12T00:26:53.000Z","updated_at":"2026-05-26T17:36:17.000Z","published_at":"2017-10-16T01:45:07.000Z","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 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\u0026#8767 \u0026#8767 \u0026#8767 \u0026#8767* \r\n\r\nYou are standing in a few inches of sea water on a beach.\r\n\r\nYou are wondering whether the high tide is coming soon or it has just passed. \r\n\r\nTherefore, you will write a code in MATLAB to analyze following data. \r\n\r\nYou followed the sequence of water lines left by several swash of waves. \r\n\r\nThe data array A contains the distances the water traveled past your feet during each upward swash of waves. \r\n\r\nYour code will return 1 if the high tide is coming soon. \r\n\r\nYour code will return 0 if the high tide has just passed.    \r\n","description_html":"\u003cp\u003e\u003cb\u003e\u0026#8767 \u0026#8767 \u0026#8767 \u0026#8767 \u0026#8767 \u0026#8767 \u0026#8767 \u0026#8767\u003c/b\u003e\u003c/p\u003e\u003cp\u003eYou are standing in a few inches of sea water on a beach.\u003c/p\u003e\u003cp\u003eYou are wondering whether the high tide is coming soon or it has just passed.\u003c/p\u003e\u003cp\u003eTherefore, you will write a code in MATLAB to analyze following data.\u003c/p\u003e\u003cp\u003eYou followed the sequence of water lines left by several swash of waves.\u003c/p\u003e\u003cp\u003eThe data array A contains the distances the water traveled past your feet during each upward swash of waves.\u003c/p\u003e\u003cp\u003eYour code will return 1 if the high tide is coming soon.\u003c/p\u003e\u003cp\u003eYour code will return 0 if the high tide has just passed.\u003c/p\u003e","function_template":"function tide = gauge(A)\r\n  tide=max(A)-min(A);\r\n  tide=tide*0;\r\nend","test_suite":"%%\r\nA = [5 8 10 12 8 13 14 10 10 15];\r\ntide_correct = 1;\r\nassert(isequal(gauge(A),tide_correct))\r\n%%\r\nA = [15 16 11 9 10 15 7 12 6 11 5 6];\r\ntide_correct = 0;\r\nassert(isequal(gauge(A),tide_correct))\r\n%%\r\nA = [9 15 3 9 5 18 4 17 18 19 8 13 12 21 17 24];\r\ntide_correct = 1;\r\nassert(isequal(gauge(A),tide_correct))\r\n%%\r\nA = [22 12 22 12 9 14 17 16 15 8 13 6 10 7 13 3];\r\ntide_correct = 0;\r\nassert(isequal(gauge(A),tide_correct))\r\n%%\r\n","published":true,"deleted":false,"likes_count":4,"comments_count":3,"created_by":166,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":396,"test_suite_updated_at":null,"rescore_all_solutions":false,"group_id":34,"created_at":"2017-09-12T00:26:53.000Z","updated_at":"2026-05-26T17:36:17.000Z","published_at":"2017-10-16T01:45:07.000Z","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 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