private void doCoding_to_tree() {
        myDataList temp1 = ((myDataList) arrList.get(arrList.size() - 1));
        myDataList temp2;
        ((data) temp1.get(0)).setBinary_Code("1");
        ((data) temp1.get(1)).setBinary_Code("0");
        for (int i = arrList.size() - 1; i > 0; i--) {
            temp1 = ((myDataList) arrList.get(i));
            temp2 = ((myDataList) arrList.get(i - 1));
            copmare_and_code(temp1, temp2);
        }
    }