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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.lang.*;
  6. import java.io.*;
  7.  
  8. /* Name of the class has to be "Main" only if the class is public. */
  9. class Ideone
  10. {
  11. 	public static void main (String[] args) throws java.lang.Exception
  12. 	{
  13. 		List<String> strList = new ArrayList<>(Arrays.asList("one", "two", "three", "four", "five"));
  14.  
  15. 		List<String> joined = 
  16. 		    IntStream.range(0, strList.size() / 2)
  17. 		        .mapToObj(i -> "(" + strList.get(2*i) + " "
  18. 		                + strList.get(2*i + 1) + ")")
  19. 		        .collect(Collectors.toList());
  20. 		List<String> subList = strList.subList(0, strList.size() / 2 * 2);
  21. 		subList.clear();
  22. 		subList.addAll(joined);
  23.  
  24. 		System.out.println(strList);
  25. 	}
  26. }
Success #stdin #stdout 0.13s 4386816KB
comments (?)
stdin 
Standard input is empty
stdout 
[(one two), (three four), five]
https://ideone.com/CIpZik
language:
Java (HotSpot 12)
created:
9 years ago
visibility:
public

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