fork download
copy 
  1. /* package whatever; // don't place package name! */
  2.  
  3. import java.util.*;
  4. import java.lang.*;
  5. import java.io.*;
  6.  
  7. /* Name of the class has to be "Main" only if the class is public. */
  8. class Ideone
  9. {
  10. 	public static void main (String[] args) throws java.lang.Exception
  11. 	{
  12. 		double dLatPos1 = latdecimal(31, 0, 0, "N");
  13. 		double dLonPos1 = londecimal(331, 0, 0, "E");
  14. 		double dLatPos2 = latdecimal(2, 42, 0, "S");
  15. 		double dLonPos2 = londecimal(16, 42, 0, "E");
  16.  
  17. 		System.out.print(measure(dLatPos1, dLonPos1, dLatPos2, dLonPos2));
  18. 	}
  19.  
  20. 	static double measure(double lat1, double lon1, double lat2, double lon2){  // generally used geo measurement function
  21. 	    double R = 320; // Radius of Duna in KM
  22. 	    double dLat = (lat2 - lat1) * Math.PI / 180;
  23. 	    double dLon = (lon2 - lon1) * Math.PI / 180;
  24. 	    double a = Math.sin(dLat/2) * Math.sin(dLat/2) +
  25. 	    Math.cos(lat1 * Math.PI / 180) * Math.cos(lat2 * Math.PI / 180) *
  26. 	    Math.sin(dLon/2) * Math.sin(dLon/2);
  27. 	    double c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1-a));
  28. 	    double d = R * c;
  29. 	    return d; // km
  30. 	}
  31.  
  32. 	static double latdecimal(double degree, double minutes, double seconds, String direction) {
  33. 		double dLatDecimal = degree + (minutes/60) + (seconds/3600);
  34. 		if(direction.equals("S")) {
  35. 			dLatDecimal = -1 * dLatDecimal;
  36. 		}
  37. 		return dLatDecimal;
  38. 	}
  39.  
  40. 	static double londecimal(double degree, double minutes, double seconds, String direction) {
  41. 		double dLonDecimal = degree + (minutes/60) + (seconds/3600);
  42. 		if(direction.equals("W")) {
  43. 			dLonDecimal = -1 * dLonDecimal;
  44. 		}
  45. 		return dLonDecimal;
  46. 	}
  47. }
Success #stdin #stdout 0.12s 320576KB
comments ()
stdin
copy 
Standard input is empty
stdout
copy 
307.1169614615872
https://ideone.com/IF9gJW
language:
Java (HotSpot 12)
created:
9 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!