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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. 	{
  12. 		Random random = new Random();
  13. 		long[] longArray = new long[5000000];
  14. 		for (int i = 0; i < 5000000; i++) {
  15. 			longArray[i] = random.nextLong();
  16. 		}
  17. 		long time = System.currentTimeMillis();
  18. 		Arrays.sort(longArray);
  19. 		System.out.println("For long array " + (System.currentTimeMillis() - time));
  20.  
  21. 		double[] objArray = new double[5000000];
  22. 		for (int i = 0; i < 5000000; i++) {
  23. 			objArray[i] = random.nextDouble() * 5000000;
  24. 		}
  25. 		time = System.currentTimeMillis();
  26. 		Arrays.sort(objArray);
  27. 		System.out.println("For dbl array " + (System.currentTimeMillis() - time));
  28.  
  29. 		int[] intArray = new int[5000000];
  30. 		for (int i = 0; i < 5000000; i++) {
  31. 			intArray[i] = random.nextInt(5000000);
  32. 		}
  33. 		time = System.currentTimeMillis();
  34. 		Arrays.sort(intArray);
  35. 		System.out.println("For int array " + (System.currentTimeMillis() - time));
  36. 	}
  37. }
Success #stdin #stdout 3.69s 380608KB
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Standard input is empty
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For long array 1023
For dbl array 848
For int array 673
https://ideone.com/spBS31
language:
Java (HotSpot 12)
created:
10 years ago
visibility:
public

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