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  1. import java.util.*;
  2. import java.util.stream.*;
  3.  
  4. class Main {
  5.  
  6. 	public static void main(String[] args) {
  7. 		List<Integer> list1 = Arrays.asList(3, 8, 15, 98);
  8. 		List<Integer> list4 = Arrays.asList(5, 4, 76, 90);
  9. 		List<Integer> list2 = Arrays.asList(3, 4, 21, 98, 5, 22);
  10. 		List<Integer> list3 = Arrays.asList(3, 4, 21, 98, 5);
  11.  
  12.  
  13. 		Optional<List<Integer>> list = Stream.of(list1, list2, list3, list4)
  14. 			.sorted((a, b) -> IntStream.range(0, Math.min(a.size(), b.size()))
  15. 				.map(i -> Integer.compare(a.get(i), b.get(i)))
  16. 				.filter(i -> i != 0)
  17. 				.findFirst()
  18. 				.orElse(Integer.compare(a.size(), b.size())))
  19. 			.findFirst();
  20.  
  21. 		System.out.println(list);
  22. 	}
  23.  
  24. }
Success #stdin #stdout 0.09s 35140KB
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Standard input is empty
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Optional[[3, 4, 21, 98, 5]]
https://ideone.com/FDAEWO
language:
Java (HotSpot 12)
created:
6 years ago
visibility:
public

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