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And why is not possible to calculate it by this method ?\r\n\r\nSuppose the earth is spherical, not flat (Lol)","description_html":"\u003cp\u003eGiven two strings(lat and long) that represent the geographic coordinates of a point in the earth, you have to find out what is the opposite or most farthest point of the earth from that point(antipodal).  \r\n The strings will be 'r.dd C', where r is the real part, dd(the mantissa in decimal, not in minutes and dd can be present or not with the form dd,d or '\u0026lt;nothing\u0026gt;', equal the point(.)) and C the cardinal point (S,N,E or W). \r\nYou have to return two strings (lat and long) with the same format that the input.\u003c/p\u003e\u003cp\u003e\u003cb\u003eExtra question:\u003c/b\u003e What is the opposite point of north pole? And why is not possible to calculate it by this method ?\u003c/p\u003e\u003cp\u003eSuppose the earth is spherical, not flat (Lol)\u003c/p\u003e","function_template":"function [lat_o,long_o] = opposite_earth_point(lat,long)\r\n  [lat_o long_o] = [lat long];\r\nend","test_suite":"%% \r\n%Mathworks headquarters\r\nlat = '42.3 N';\r\nlong = '71.37 W';\r\n[lat_o long_o]=opposite_earth_point(lat,long);\r\nlat_o_correct = '42.3 S';\r\nlong_o_correct = '108.63 E';\r\nassert(isequal([lat_o long_o],[lat_o_correct long_o_correct]))\r\n\r\n%% \r\n%San Antonio\r\nlat = '29.31 N';\r\nlong = '98.46 W';\r\n[lat_o long_o]=opposite_earth_point(lat,long);\r\nlat_o_correct = '29.31 S';\r\nlong_o_correct= '81.54 E';\r\nassert(isequal([lat_o long_o],[lat_o_correct long_o_correct]))\r\n\r\n%%\r\n%My city \r\nlat = '32.9 S';\r\nlong = '68.82 W';\r\n[lat_o long_o]=opposite_earth_point(lat,long);\r\nlat_o_correct= '32.9 N';\r\nlong_o_correct = '111.18 E';\r\nassert(isequal([lat_o long_o],[lat_o_correct long_o_correct]))\r\n\r\n%%\r\n%Big Ben \r\nlat = '51.5 N';\r\nlong = '0.12 W';\r\n[lat_o long_o]=opposite_earth_point(lat,long);\r\nlat_o_correct= '51.5 S';\r\nlong_o_correct = '179.88 E';\r\nassert(isequal([lat_o long_o],[lat_o_correct long_o_correct]))\r\n\r\n%%\r\n%Wellington\r\nlat = '41.27 S';\r\nlong = '174.78 E';\r\n[lat_o long_o]=opposite_earth_point(lat,long);\r\nlat_o_correct= '41.27 N';\r\nlong_o_correct = '5.22 W';\r\nassert(isequal([lat_o long_o],[lat_o_correct long_o_correct]))\r\n\r\n%%\r\n%Some point of Brasil\r\nlat = '1 S';\r\nlong = '50 W';\r\n[lat_o long_o]=opposite_earth_point(lat,long);\r\nlat_o_correct= '1 N';\r\nlong_o_correct = '130 E';\r\nassert(isequal([lat_o long_o],[lat_o_correct long_o_correct]))\r\n\r\n%%\r\n% Some point near to Moscú\r\nlat = '55 N';\r\nlong = '37 E';\r\n[lat_o long_o]=opposite_earth_point(lat,long);\r\nlat_o_correct= '55 S';\r\nlong_o_correct = '143 W';\r\nassert(isequal([lat_o long_o],[lat_o_correct long_o_correct]))","published":true,"deleted":false,"likes_count":1,"comments_count":0,"created_by":289312,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":18,"test_suite_updated_at":"2019-04-18T18:26:43.000Z","rescore_all_solutions":false,"group_id":1,"created_at":"2019-04-18T18:22:19.000Z","updated_at":"2026-03-16T13:49:41.000Z","published_at":"2019-04-18T18:22:19.000Z","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 two strings(lat and long) that represent the geographic coordinates of a point in the earth, you have to find out what is the opposite or most farthest point of the earth from that point(antipodal). The strings will be 'r.dd C', where r is the real part, dd(the mantissa in decimal, not in minutes and dd can be present or not with the form dd,d or '\u0026lt;nothing\u0026gt;', equal the point(.)) and C the cardinal point (S,N,E or W). You have to return two strings (lat and long) with the same format that the input.\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:rPr\u003e\u003cw:b/\u003e\u003c/w:rPr\u003e\u003cw:t\u003eExtra question:\u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:t\u003e What is the opposite point of north pole? And why is not possible to calculate it by this method ?\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\u003eSuppose the earth is spherical, not flat (Lol)\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":44882,"title":"Opposite point of the earth, what is the antipodal of a point ?","description":"Given two strings(lat and long) that represent the geographic coordinates of a point in the earth, you have to find out what is the opposite or most farthest point of the earth from that point(antipodal).  \r\n The strings will be 'r.dd C', where r is the real part, dd(the mantissa in decimal, not in minutes and dd can be present or not with the form dd,d or '\u003cnothing\u003e', equal the point(.)) and C the cardinal point (S,N,E or W). \r\nYou have to return two strings (lat and long) with the same format that the input.\r\n\r\n*Extra question:* What is the opposite point of north pole? And why is not possible to calculate it by this method ?\r\n\r\nSuppose the earth is spherical, not flat (Lol)","description_html":"\u003cp\u003eGiven two strings(lat and long) that represent the geographic coordinates of a point in the earth, you have to find out what is the opposite or most farthest point of the earth from that point(antipodal).  \r\n The strings will be 'r.dd C', where r is the real part, dd(the mantissa in decimal, not in minutes and dd can be present or not with the form dd,d or '\u0026lt;nothing\u0026gt;', equal the point(.)) and C the cardinal point (S,N,E or W). \r\nYou have to return two strings (lat and long) with the same format that the input.\u003c/p\u003e\u003cp\u003e\u003cb\u003eExtra question:\u003c/b\u003e What is the opposite point of north pole? And why is not possible to calculate it by this method ?\u003c/p\u003e\u003cp\u003eSuppose the earth is spherical, not flat (Lol)\u003c/p\u003e","function_template":"function [lat_o,long_o] = opposite_earth_point(lat,long)\r\n  [lat_o long_o] = [lat long];\r\nend","test_suite":"%% \r\n%Mathworks headquarters\r\nlat = '42.3 N';\r\nlong = '71.37 W';\r\n[lat_o long_o]=opposite_earth_point(lat,long);\r\nlat_o_correct = '42.3 S';\r\nlong_o_correct = '108.63 E';\r\nassert(isequal([lat_o long_o],[lat_o_correct long_o_correct]))\r\n\r\n%% \r\n%San Antonio\r\nlat = '29.31 N';\r\nlong = '98.46 W';\r\n[lat_o long_o]=opposite_earth_point(lat,long);\r\nlat_o_correct = '29.31 S';\r\nlong_o_correct= '81.54 E';\r\nassert(isequal([lat_o long_o],[lat_o_correct long_o_correct]))\r\n\r\n%%\r\n%My city \r\nlat = '32.9 S';\r\nlong = '68.82 W';\r\n[lat_o long_o]=opposite_earth_point(lat,long);\r\nlat_o_correct= '32.9 N';\r\nlong_o_correct = '111.18 E';\r\nassert(isequal([lat_o long_o],[lat_o_correct long_o_correct]))\r\n\r\n%%\r\n%Big Ben \r\nlat = '51.5 N';\r\nlong = '0.12 W';\r\n[lat_o long_o]=opposite_earth_point(lat,long);\r\nlat_o_correct= '51.5 S';\r\nlong_o_correct = '179.88 E';\r\nassert(isequal([lat_o long_o],[lat_o_correct long_o_correct]))\r\n\r\n%%\r\n%Wellington\r\nlat = '41.27 S';\r\nlong = '174.78 E';\r\n[lat_o long_o]=opposite_earth_point(lat,long);\r\nlat_o_correct= '41.27 N';\r\nlong_o_correct = '5.22 W';\r\nassert(isequal([lat_o long_o],[lat_o_correct long_o_correct]))\r\n\r\n%%\r\n%Some point of Brasil\r\nlat = '1 S';\r\nlong = '50 W';\r\n[lat_o long_o]=opposite_earth_point(lat,long);\r\nlat_o_correct= '1 N';\r\nlong_o_correct = '130 E';\r\nassert(isequal([lat_o long_o],[lat_o_correct long_o_correct]))\r\n\r\n%%\r\n% Some point near to Moscú\r\nlat = '55 N';\r\nlong = '37 E';\r\n[lat_o long_o]=opposite_earth_point(lat,long);\r\nlat_o_correct= '55 S';\r\nlong_o_correct = '143 W';\r\nassert(isequal([lat_o long_o],[lat_o_correct long_o_correct]))","published":true,"deleted":false,"likes_count":1,"comments_count":0,"created_by":289312,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":18,"test_suite_updated_at":"2019-04-18T18:26:43.000Z","rescore_all_solutions":false,"group_id":1,"created_at":"2019-04-18T18:22:19.000Z","updated_at":"2026-03-16T13:49:41.000Z","published_at":"2019-04-18T18:22:19.000Z","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 two strings(lat and long) that represent the geographic coordinates of a point in the earth, you have to find out what is the opposite or most farthest point of the earth from that point(antipodal). The strings will be 'r.dd C', where r is the real part, dd(the mantissa in decimal, not in minutes and dd can be present or not with the form dd,d or '\u0026lt;nothing\u0026gt;', equal the point(.)) and C the cardinal point (S,N,E or W). You have to return two strings (lat and long) with the same format that the input.\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:rPr\u003e\u003cw:b/\u003e\u003c/w:rPr\u003e\u003cw:t\u003eExtra question:\u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:t\u003e What is the opposite point of north pole? And why is not possible to calculate it by this method ?\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\u003eSuppose the earth is spherical, not flat (Lol)\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\"}]}"}],"term":"tag:\"geographical 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