private static boolean isAnagram(String a, String b) {
        
        if(b.length() != a.length()) {
            return false;
        } else {            
            char[] arrayA = a.toUpperCase().toCharArray();
            char[] arrayB = b.toUpperCase().toCharArray();
            
            Arrays.sort(arrayA);
            Arrays.sort(arrayB);

            for(int i=0; i< arrayA.length; i++) {
                if(arrayB[i] != arrayA[i]) {
                    return false;
                }
            }
            return true;
        }        
    }