public boolean checkStringRotation(String string1, String string2) {

        /* Length of string1 */
        int n = string1.length();
        /* Length of the strings are not same - Not a rotation */
        if (n != string2.length())
            return false;

        int i = 0;
        int j = 0;
        while (i < (n - 1) && j < (n - 1)) {
            int k = 1;
            while (k <= n && string1.charAt((i + k) % n) == string2.charAt((j + k) % n))
                k++;

            if (k > n)
                return true;

            if (string1.charAt((i + k) % n) > string2.charAt((j + k) % n))
                i += k;

            else
                j += k;
        }
        return false;
    }