fork(1) download
copy 
  1. import java.util.HashSet;
  2. import java.util.HashMap;
  3. import java.util.Map;
  4. import java.util.Set;
  5.  
  6. class Ideone
  7. {
  8. 	public static void main (String[] args)
  9. 	{
  10.       Vocabulary v=new Vocabulary();
  11.       v.put("one","jeden");
  12.       v.put("one","jedyny");
  13.       v.display();
  14.       v.invert();
  15.       v.display();
  16.       v.invert();
  17.       v.display();
  18. 	}
  19. }
  20.  
  21. class Vocabulary
  22.   {
  23.    private HashMap<String,HashSet<String>> map=new HashMap<String,HashSet<String>>();
  24.    public void put(String src,String dst)
  25.      {
  26.       HashSet<String> tmp=map.get(src);
  27.       if(tmp==null) 
  28.         {
  29.          tmp=new HashSet<String>();
  30.          map.put(src,tmp);
  31.         }
  32.       tmp.add(dst);
  33.      }
  34.    public void display()
  35.      {
  36.       for(Map.Entry<String,HashSet<String>> mr:map.entrySet())
  37.         {
  38.          System.out.print(mr.getKey()+":");
  39.          for(String value:mr.getValue()) System.out.print(" "+value);
  40.          System.out.println();
  41.         }
  42.       System.out.println();
  43.      }
  44.    public void invert()
  45.      {
  46.       Vocabulary v=new Vocabulary();
  47.       for(Map.Entry<String,HashSet<String>> mr:map.entrySet())
  48.         {
  49.          String key=mr.getKey();
  50.          for(String value:mr.getValue()) v.put(value,key);
  51.         }
  52.       map=v.map;
  53.      }
  54.   }
  55.  
Success #stdin #stdout 0.1s 320576KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
one: jeden jedyny

jeden: one
jedyny: one

one: jeden jedyny
https://ideone.com/kIl1Fq
language:
Java (HotSpot 12)
created:
8 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!