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ipdatabase-master
ipdatabase
二叉树快速搜索IP地址数据库
数据
数据源采用2015年广告协会制定的IP地址标准数据库,中国互联网广告行业统一采用的标准IP库。
原理
利用二叉树实现IP查询,首先将10进制IPV4地址转化为二进制构建二叉树,利用二叉树搜索进行搜索,查询时间复杂度log2n,比传统IP库n的查询速度高出一个量级。(Ipdatabase
Binary Tree Fast Search IP Address Database
data
The data source is the standard IP address database formulated by the Advertising Association in 2015, and the standard IP database adopted by the Internet advertising industry in China.
principle
The binary tree is used to realize IP query. Firstly, the 10-bit IPV4 address is converted into binary to construct a binary tree, and the binary tree search is used to search. The query time complexity log2n is one order of magnitude higher than that of traditional IP library n.)
- 2020-06-15 22:35:01下载
- 积分:1
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AppletClient
实现大附件上传插件 applet集成,可续传,可单独部署,下载还未开放(Upload applet integrated large attachments)
- 2015-06-07 11:31:48下载
- 积分:1
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xiaoliuBBS
功能简单,界面简单,适合初学者上手,简单易学(Function is simple, simple interface, suitable for beginners to use, easy to learn)
- 2011-04-23 13:41:35下载
- 积分:1
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jdb4sqlserver
java访问sql server数据库的jdbc驱动,很重要哦(java database sql server access jdbc driver, it is very important, oh)
- 2009-06-03 15:31:31下载
- 积分:1
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飞机大战网络版
网络版JAVA版飞机大战,自己在学习JAVA网络开发时写的小栗子(Network version JAVA version of the aircraft war,Xiao Chestnut Written by myself in Learning JAVA Network Development)
- 2020-07-04 03:20:02下载
- 积分:1
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10_4
八大行星运转,有八个行星的代码,以及它们相互之间的关系等等(failed to translate)
- 2009-06-24 22:41:26下载
- 积分:1
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d1
说明: 这是一个基于java的基础程序,对java的初学者很有帮助,尤其是对java语法的提高很有帮助。(This is a java program based on the basis for the beginners java help, especially in java syntax to improve very helpful.
)
- 2010-05-25 20:49:47下载
- 积分:1
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AirConditioningCode
分布式温控系统基本要求
1. 中央空调是冷暖两用,但一次只能使用一种温控装置。当设置为供暖时,供暖温度控制在25°C~30°C之间,当设置为制冷时,制冷温度控制在18°C~25°C之间。
2. 中央空调具备开关按钮,只可人工开启和关闭,中央空调开启后处于待机状态。当关闭后,不响应来自房间的任何温控请求。当有来自从控机的温控要求时,中央空调开始工作。当所有房间都没有温控要求时,中央空调的状态回到待机状态。
3. 房间内有独立的从控空调机,但没有冷暖控制设备。从控机具有一个传感器,实时监测房间的温度,并与从控机的目标设置温度进行对比,决定是否需要制冷或制热,并向中央空调机发出请求。如果从控机发出的请求和中央空调设置的冷暖控制状态发生矛盾时,以中央空调机的状态优先,即中央空调机不予响应。
4. 从控机只能人工方式开闭,并通过控制面板设置目标温度,目标温度有上下限制。所有房间的初始目标温度由中央空调机设置,每个房间的空调机开启时要读取中央空调机预置的房间温度。温度升降范围应该在目标温度的上下1 °C。房间不考虑大小和管道的分布及大小问题,在达到目标温度后,房间的温度每分钟上下变化0.1°C。
(Basic requirements of a distributed temperature control system
1. Central air conditioning is the well-being of dual-use, but can only use a thermostat device. When set to heating, the heating temperature at 25 ° C ~ 30 ° C, and when set to cooling, the cooling temperature at 18 ° C ~ 25 ° C between.
2. Central air conditioning with switch buttons can only be manually opened and closed, central air-conditioning turned on in standby mode. When closed, do not respond to a request from the room of any thermostat. When the machine from temperature control from the control requirements, central air-conditioning work. When all rooms are no thermostat demand, central air condition back to standby.
3. Room independent from the control air conditioning, but no climate-control equipment. From the control machine with a sensor, real-time monitoring the temperature of the room, and with the goal set from the control unit compares the temperature to determine the need for cooling or he)
- 2021-04-14 20:58:54下载
- 积分:1
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CalendarGuess
java版本的万年历,可以显示当前时间,如当前年、当前月、当前日、当前小时、当前分钟等等(java java java java java java java java java java java java java java java java java java java java java )
- 2013-11-27 16:17:12下载
- 积分:1
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Substring
按照字符串的长度截取相应的字符串,加入循环条件实现长度在11个字符内的字符串批量切词~(In accordance with the length of the string interception corresponding string, add the length of the loop condition to achieve within the 11 character string batch segmentation ~)
- 2013-08-09 20:37:45下载
- 积分:1