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Oracle 常用SQL
1.创建表CREATE TABLE emp_test (ID NUMBER(5,2) PRIMARY KEY, NAME VARCHAR2(20) UNIQUE, BIRTHDAY DATE);--修改表名ALTER TABLE emp_test RENAME TO TEST1;--修改表列名Alt...
分类:数据库   时间:2014-08-21 16:30:24    阅读次数:336
【Leetcode】4sum
Given an array S of n integers, are there elements a, b, c, and d in S such that a + b + c + d = target? Find all unique quadruplets in the array whic...
分类:其他好文   时间:2014-08-20 14:06:32    阅读次数:182
小总结#1——最小边最大
给你n个点,m条边,让你求一条路径,使得s到t的最短边最长这类问题,不是MST就是二分+判断例如:1.NOIP2013day1t3 火车运输 MST+树上倍增2.CH ROUND 52 A 拆地毯 类似MST3.BZOJ1614: [Usaco2007 Jan]Telephone Lines架设电....
分类:其他好文   时间:2014-08-19 23:57:05    阅读次数:433
每日算法之四十二:Permutation Sequence (顺序排列第k个序列)
The set [1,2,3,…,n] contains a total of n! unique permutations. By listing and labeling all of the permutations in order, We get the following sequence (ie, for n = 3): "123""132""213""231""3...
分类:其他好文   时间:2014-08-19 22:34:25    阅读次数:288
jQuery.Callbacks之demo
jQuery.Callbacks是jquery在1.7版本之后加入的,是从1.6版中的_Deferred对象中抽离的,主要用来进行函数队 列的add、remove、fire、lock等操作,并提供once、memory、unique、stopOnFalse四个option进行一些特 殊的控制,这是j...
分类:Web程序   时间:2014-08-19 20:23:25    阅读次数:265
daan
1:alter table TABLE_Aadd constraint uinx_table_a unique (STUDID);2:题目有问题,table_b 中没有张飞update table_b tset t.studscore = (select s.studscorefrom table_...
分类:其他好文   时间:2014-08-19 16:06:44    阅读次数:165
Making Properties Nonenumerable
We implemented a Set class by using  "object id" properties to map objects.  Every object has a unique object id. In order to ensure the same object is added only once, we make the id a property of th...
分类:其他好文   时间:2014-08-19 12:53:24    阅读次数:200
std::map插入已存在的key时,key对应的内容不会被更新
std::map插入已存在的key时,key对应的内容不会被更新,如果不知道这一点,可能会造成运行结果与预期的不一致“Because element keys in amapare unique, the insertion operation checks whether each inserte...
分类:其他好文   时间:2014-08-19 10:38:03    阅读次数:226
[LeetCode] Permutation Sequence
The set [1,2,3,…,n] contains a total of n! unique permutations.By listing and labeling all of the permutations in order, We get the following sequence...
分类:其他好文   时间:2014-08-18 23:29:23    阅读次数:207
Unique Binary Search Trees II
Given n, generate all structurally unique BST's (binary search trees) that store values 1...n.For example,Given n = 3, your program should return all ...
分类:其他好文   时间:2014-08-18 21:58:52    阅读次数:260
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