public static boolean isMixture(String s, char[] c){
    	int cIndex = 0;
    	char currentChar = ' ';
    	for (int i=0; i<s.length(); i++) {
    		if (currentChar != s.charAt(i)) {
    			while (cIndex < c.length && s.charAt(i) != c[cIndex])
    			   cIndex++;
    			if (cIndex == c.length)
    				return true;    			
    		}
    	}    	   	    	    	    	
    	return false;
    }