public static void count(String s) {
		
		int UniqueWords = 0;
		boolean[] b = new boolean[256];
		for(int i=0;i<s.length();i++) {
			 if(!b[s.charAt(i)]) {
				 
				 UniqueWords += 1;
				 b[s.charAt(i)] = true;
			 
			 } 
		}
		System.out.println("Unique words in the String is : " + UniqueWords);
		
	}