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  1. import java.util.*;
  2. import java.lang.*;
  3. import java.io.*;
  4.  
  5. /* Name of the class has to be "Main" only if the class is public. */
  6. class Ideone
  7. {
  8. 	public static void main (String[] args) throws java.lang.Exception
  9. 	{
  10. 		ArrayList<String> arr = new ArrayList();
  11. 		Scanner input = new Scanner(System.in);
  12. 		String str,str2;
  13. 		String empty = "";
  14. 		str = input.nextLine();
  15. 		for(int i = 0;i<str.length();i++)
  16. 		{
  17. 			str2 = empty;
  18. 			str2 += str.charAt(i);
  19. 			arr.add(str2);
  20. 		}
  21. 		for(int i = 0;i < arr.size(); i++)
  22. 		{
  23. 			if(i != arr.size()-1)
  24. 			{
  25. 				if(arr.get(i).equals(arr.get(i+1)))
  26. 				{
  27. 					arr.remove(i);
  28. 					arr.remove(i);
  29. 					i--;
  30. 				}
  31. 			}
  32. 		}
  33. 		for(int i = 0;i < arr.size();i++)
  34. 		{
  35. 			System.out.print(arr.get(i));
  36. 		}
  37. 	}
  38. }
Success #stdin #stdout 0.09s 2841600KB
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aabbccff
stdout
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Standard output is empty
https://ideone.com/MzGAIY
language:
Java (HotSpot 12)
created:
7 years ago
visibility:
public

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