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  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. 		double radius = 100;
  12. 		double radiusSq = 10000;
  13.  
  14. 		startTime();
  15. 		for(int i=0; i<1000000; i++) {
  16. 			if(Math.sqrt(i) <= radiusSq) {
  17. 				String asd = "Just something to do";
  18. 			}
  19. 		}
  20. 		endTime();
  21.  
  22. 		startTime();
  23. 		for(int i=0; i<1000000; i++) {
  24. 			if(i <= radius) {
  25. 				String asd = "Just something to do";
  26. 			}
  27. 		}
  28. 		endTime();
  29. 	}
  30.  
  31. 	private static long time;
  32.  
  33. 	private static void startTime () {
  34. 		time = System.nanoTime();
  35. 	}
  36.  
  37. 	private static void endTime () {
  38. 		long c = System.nanoTime()-time;
  39. 		System.out.println(c+"ns ("+(c/1000000)+"ms)");
  40. 	}
  41. }
Success #stdin #stdout 0.12s 320256KB
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15292354ns (15ms)
2070188ns (2ms)
https://ideone.com/mHBQPn
language:
Java (HotSpot 12)
created:
10 years ago
visibility:
public

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