一、JDBC ① 定义:在Java技术系列中,访问数据库的技术叫做JDBC,它提供了一系列的API,让Java语言 编写的代码连接数据库,对数据库的数据进行添加 删除 修改 查询。 ② JDBC中以下类或接口 java.sql.Connection: 负责连接数据库 java.sql.Stateme Read More
JavaScript 学习一、变量的定义 ① 变量为弱变量 使用var关键字 例: var arg1=10; var arg2=new Array("王","李","赵")[定义字符串数组];二、函数定义 ① 基本格式: (1) function 函数名(参数列表){ return 值 } (2) Read More
4292: Count the Trees 时间限制(普通/Java):2000MS/6000MS 内存限制:65536KByte总提交: 15 测试通过:6 描述 A binary tree is a tree data structure in which each node has at mo Read More
Redundant Paths Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 21252 Accepted: 8773 Description In order to get from one of the F (1 <= F Read More
Network of Schools Time Limit: 1000MS Memory Limit: 10000K Total Submissions: 27846 Accepted: 10960 Description A number of schools are connected to a Read More