Remove duplicate values from a string in java

Question

Can anyone please let me know how to remove duplicate values from

String s=\"Bangalore-Chennai-NewYork-Bangalore-Chennai\"; 

and output sh

Answer 1

A little late to the game, but I would simply use a HashMap. It's easy to understand and has quick lookups on the keys, might not be the best way but it's still a good answer IMO. I use it all the time when I need to format quick and dirty:

                    String reason = "Word1 , Word2 , Word3";
                    HashMap temp_hash = new HashMap();
                    StringBuilder reason_fixed = new StringBuilder();
                    //in:
                    for(String word : reason.split(",")){
                        temp_hash.put(word,word);
                    }
                    //out:
                    for(String words_fixed : temp_hash.keySet()){
                        reason_fixed.append(words_fixed + " , ");
                    }
                    //print:
                    System.out.println(reason_fixed.toString());