摘要： I did it in a recursive way. There is another iterative way to do it. I will come back at it later. /** * Definition of TreeNode: * public class TreeN 阅读全文

摘要： 按照以前的老方法，写Java的主程序通过JDBC来连MySQL。 //1: import java.sql.*; import java.sql.*; public class JDBC_Driver { // JDBC driver name and database URL; static fi 阅读全文