public class CompareString {
    /**
     * Testing the comparison of strings
     * This assumes a multidimensional array of string [n][2]
     * Will just print the result of comparing [][0] with [][1]
     * @args a 2d array of strings.  In the second d, this assumes at least 2 items 
     */
    public void tCompare(String[][] arr) {
        for (String[] subArr : arr) {
            System.out.println("Compare  " + subArr[0] + " to " + subArr[1] + ": " + subArr[0].compareTo(subArr[1]));
            //System.out.println("MCompare " + subArr[0] + " to " + subArr[1] + ": " + myCompareTo(subArr[0], subArr[1]));
        }
    }

    public int myCompareTo(String st1, String st2) {
        int len1 = st1.length();
        int len2 = st2.length();
        if (len1!=len2) {
            return len1-len2;
        }
        for (int i=0; i<len1; i++) {
            int diff = st1.charAt(i)-st2.charAt(i);
            if (diff!=0)
                return diff;
        }
        return 0;
    }

    public static void main(String[] args) {
        CompareString cs = new CompareString();
        String[][]  tstring = { { "abc", "def"}, {"zyx", "xyz"}, {"A", "a"}, {"abc", "a"}, {"abcd", "abcdefg"}, {"bbb", "a"} };
        cs.tCompare(tstring);

    }

}