public static boolean tree_Compare(
        pBinTreeIntegerWR a,pBinTreeIntegerWR b){
        if(a != null && b != null){
            return a.data.compareTo(b.data) == 0 &&
                tree_Compare(a.left,b.left) &&
                tree_Compare(a.right,b.right);
        }else if(a == null && b == null)
            return true;
        else
            return false;
    }