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  1. /* package whatever; // don't place package name! */
  2.  
  3. import java.util.*;
  4. import java.util.stream.*;
  5. import java.util.function.*;
  6. import java.lang.*;
  7. import java.io.*;
  8.  
  9. /* Name of the class has to be "Main" only if the class is public. */
  10. class Ideone {
  11. 	public static void main (String[] args) throws java.lang.Exception	{
  12. 		Integer[] unsorted = new Integer[] { 1, 2, 3, 8, 4, 5, 6, 7 };
  13. 		Double[] sorted = new Double[] { 1.1, 2.2, 3.3, 4.4, 5.5, 6.6, 7.7, 8.8 };
  14. 		try {
  15. 			Arrays.stream(unsorted).reduce((last, curr) -> {
  16. 				System.out.println("check");
  17. 				if (((Comparable) curr).compareTo(last) < 0) {
  18. 					throw new UnsupportedOperationException("");
  19. 				}
  20.  
  21. 				return curr;
  22. 			});
  23. 			System.out.println("sorted");
  24. 		} catch (UnsupportedOperationException e) {
  25. 			System.out.println("unsorted");
  26. 		}
  27. 		try {
  28. 			Arrays.stream(sorted).reduce((last, curr) -> {
  29. 				System.out.println("check");
  30. 				if (((Comparable) curr).compareTo(last) < 0) {
  31. 					throw new UnsupportedOperationException();
  32. 				}
  33.  
  34. 				return curr;
  35. 			});
  36. 			System.out.println("sorted");
  37. 		} catch (UnsupportedOperationException e) {
  38. 			System.out.println("unsorted");
  39. 		}
  40. 	}
  41. }
  42.  
Success #stdin #stdout 0.18s 320576KB
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stdin
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Standard input is empty
stdout
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check
check
check
check
unsorted
check
check
check
check
check
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sorted
https://ideone.com/ZMGnVW
language:
Java (HotSpot 12)
created:
8 years ago
visibility:
public

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