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常用sql语句及案例
目录1)基本2)数学函数3)rownum4)分页5)时间处理6)字符函数7)to_number8)聚合函数9)学生选课10)图书馆借阅基本--新建表:create table table1( id varchar(300) primary key, name varchar(200) not nul...
分类:数据库   时间:2014-05-12 16:11:47    阅读次数:590
【LeetCode】Longest Consecutive Sequence
Given an unsorted array of integers, find the length of the longest consecutive elements sequence.For example,Given[100, 4, 200, 1, 3, 2],The longest ...
分类:其他好文   时间:2014-05-10 20:06:26    阅读次数:404
Activity之间的信使--Bundle
两个Activity之间的传参的具体做法如下: 1.新建一个Bundle类 Bundle bundle=new Bundle(); 2.向Bundle类中放入数据(类似于map) bundle.putString("key" ," value"); 3.新建一个intent对象,并将该bund...
分类:其他好文   时间:2014-05-06 09:05:48    阅读次数:349
HDU 4718 The LCIS on the Tree(树链剖分)
Problem DescriptionFor a sequence S1, S2, ... , SN, and a pair of integers (i, j), if 1 2 #include 3 #include 4 #include 5 using namespace std...
分类:其他好文   时间:2014-05-05 23:50:08    阅读次数:445
google mapsDemo示例运行
①申请API KEY②SelectFile>Import>Android>Existing Android Code Into Workspaceand clickNext.导入google-play-services_lib③SelectFile>New>Other>Android Sample ...
分类:其他好文   时间:2014-05-05 23:05:06    阅读次数:344
用模型取代字典的好处
1.使用字典的坏处:一般情况下,设置数据和取出数据都使用“字符串类型的key”,编写这些key时,编译器不会有任何友善提示,需要手敲dict[@"name"] = @"Jack"; NSString *name = dict[@"name"];手敲字符串key,key容易写错 Key如果写错了,编译...
分类:其他好文   时间:2014-05-05 23:03:39    阅读次数:298
Leetcode | Longest Consecutive Sequence
Given an unsorted array of integers, find the length of the longest consecutive elements sequence.For example,Given [100, 4, 200, 1, 3, 2],The longest...
分类:其他好文   时间:2014-05-05 23:01:41    阅读次数:374
【LeetCode OJ】Longest Consecutive Sequence
Problem Link:http://oj.leetcode.com/problems/longest-consecutive-sequence/This problem is a classical problem where we can reduce the running time by ...
分类:其他好文   时间:2014-05-05 22:55:22    阅读次数:552
如何在 javascript / js 中 建立一个map
建立map的方式(其实用的是json实现方式) var a = {}; a["key1"] = "value1"; a["key2"] = "value2"; 既然是个map就有检索某个键是否存在的方法,这样写 if ("key1" in a) { // something } else { // something else } 简单的一句话声明map里面的key和valu...
分类:编程语言   时间:2014-05-02 19:21:46    阅读次数:332
[转]Installing python 2.7 on centos 6.3. Follow this sequence exactly for centos machine only
Okay for centos 6.4 also On apu.0xdata.loc, after this install was done$ which python /usr/local/bin/python$ python -VPython 2.7.3$ ls -ltr /usr/local...
分类:编程语言   时间:2014-05-02 12:53:59    阅读次数:609
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