leetcode--Anagrams

Given an array of strings, return all groups of strings that are anagrams.

Note: All inputs will be in lower-case.

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1. public class Solution {  
2.     public List<String> anagrams(String[] strs) {  
3.         List<String> res = new ArrayList<String>();    
4.         HashMap<String,Integer> map = new HashMap<String,Integer>();  
5.         for(int i=0;i<strs.length;i++){  
6.             char[] c = strs[i].toCharArray();  
7.             Arrays.sort(c);  
8.             String t = new String(c);  
9.             if(map.containsKey(t)){  
10.                 if(!res.contains(strs[map.get(t)])){  
11.                     res.add(strs[map.get(t)]);  
12.                 }  
13.                 res.add(strs[i]);  
14.             }else{            
15.                 map.put(t, i);  
16.             }  
17.         }  
18.         return res;    
19.     }  
20. }  

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