Anagrams

Anagram is a type of word or phrase generating by rearranging the letters of a given word or phrase to produce a new word or phrase. Need to use all the original letters exactly once to frame new word or phrase. Some of the famous Anagram words are given below,

Mother in law	Woman Hitler
Debit card	Bad credit
Eleven plus two	Twelve plus one
Payment received	Every cent paid me
Astronomer	Moon starer
Dormitory	Dirty room
Punishment	Nine Thumps
Desperation	A rope ends it
Snooze alarms	Alas! No more Zs

and lot more are there...


Lets implement anagrams in java for only words to generate. 

public class Anagram {

 private HashSet<String> words = new HashSet<String>();
 
 public static void main(String[] args) throws Exception {
  
  String myWord = "art";

  Anagram obj = new Anagram();
  

  obj.getAnagramWords("", myWord);
  
  obj.printAnagramWords();
  
 }

 public void getAnagramWords(String prefix, String word) {
  if (word.length() <= 1) {
   words.add(prefix+word);
  } else {
   for (int i = 0; i < word.length(); i++) {
    String middle = word.substring(i, i + 1);
    String before = word.substring(0, i);
    String after = word.substring(i + 1);
    getAnagramWords(prefix + middle, before + after);
   }
  }  
 }
 
 public void printAnagramWords(){
  System.out.println("LIST OF ANAGRAM WORDS :::");
  for (String string : words) {
   System.out.println(string);   
  }
 }
}

OUTPUT:

LIST OF ANAGRAM WORDS :::
rta
atr
tra
art
tar
rat