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  1. import java.util.*;
  2. import java.io.*;
  3.  
  4. class Main
  5. {
  6. 	public static void main (String[] args) throws java.lang.Exception
  7. 	{
  8.  
  9. 		java.util.ArrayList<String> list1 = new java.util.ArrayList<String>();
  10.  
  11.  
  12. 		java.io.BufferedReader r = new java.io.BufferedReader (new java.io.InputStreamReader (System.in));
  13. 		while (true){
  14. 			String s = r.readLine();
  15. 			if(s == null){
  16. 				break;
  17. 			}
  18. 			list1.add(s);
  19. 		}
  20.  
  21. 		for(String s1:list1){
  22. 			System.out.println(s1);
  23. 		}
  24. 		System.out.println("====");
  25. 		// ここまで前座
  26.  
  27. 		ArrayList<String> list2 = new ArrayList<String>(new HashSet<String>(list1));
  28. 		// java.util.Collections.reverseとか使いたければお好きなように。
  29. 		// http://d...content-available-to-author-only...e.com/javase/7/docs/api/java/util/Collections.html#reverse%28java.util.List%29
  30.  
  31. 		// java.util.Collections.reverse(list2);
  32.  
  33. 		for(String s1:list2){
  34. 			System.out.println(s1);
  35. 		}
  36. 		System.out.println("====");		
  37.  
  38.  
  39. 	}
  40. }
Success #stdin #stdout 0.08s 212416KB
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====
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====
https://ideone.com/fr1uU
language:
Java (HotSpot 12)
created:
12 years ago
visibility:
public

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