public static boolean isAnagrams(String s,String t){
		if( s== null || t == null){
			return false;
		}
		if(s.length() != t.length()){
			return false;
		}
		char[] u = s.toCharArray();
		Arrays.sort(u);
		char[] v = t.toCharArray();
		Arrays.sort(v);
		if(new String(u).equals(new String(v))){
			return true;
		}
		else{
			return false;
		}
	}