阿里电面问到了相关的知识，在网上找到这方面的文章。这几个关键字是查询递归数据的，形成一个树状结构。目前只有oracle支持，其他数据都要结合存储过程实现语法：
select * from some_table [where 条件1] connect by [条件2] start with [条件3....
分类：
数据库 时间：
2014-06-07 03:43:40
阅读次数：
241
Validate if a given string is numeric.Some
examples:"0"=>true" 0.1 "=>true"abc"=>false"1
a"=>false"2e10"=>trueNote:It is intended for the problem stat...
分类：
其他好文 时间：
2014-06-04 20:54:02
阅读次数：
326
Follow up for "Unique Paths":Now consider if
some obstacles are added to the grids. How many unique paths would there be?An
obstacle and empty space i...
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其他好文 时间：
2014-06-04 19:54:55
阅读次数：
258
一道记忆搜索题，记忆搜索题就是搜索的形式+DP的思想！题目：FatMouse has
stored some cheese in a city. The city can be considered as a square grid of
dimension n: each grid locatio...
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其他好文 时间：
2014-06-03 14:14:28
阅读次数：
466
DescriptionAn ascending sorted sequence of
distinct values is one in which some form of a less-than operator is used to
order the elements from smalle...
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其他好文 时间：
2014-05-30 14:31:10
阅读次数：
297
The sound of a mosquito can mean trouble in many
parts of the world.The bite of a mosquito can be deadly.Today, we will hear
about some of the disease...
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其他好文 时间：
2014-05-29 18:03:42
阅读次数：
246
Have we missed some critical information from
this article? Are you a company, organisation or research group operating in
this region and feel you wa...
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其他好文 时间：
2014-05-28 04:06:31
阅读次数：
337
回文数是指这样的数字：正读和倒读都是一样的。如：595，2332都是回文数，234不是回文数。注意：负数不是回文数Determine whether an
integer is a palindrome. Do this without extra space.Some hints:Could ne...
分类：
其他好文 时间：
2014-05-27 23:44:17
阅读次数：
459
Determine whether an integer is a palindrome. Do
this without extra space.Some hints:Could negative integers be palindromes? (ie,
-1)If you are thinki...
分类：
其他好文 时间：
2014-05-26 18:07:52
阅读次数：
217
DescriptionThere are n houses in the village and
some bidirectional roads connecting them. Every day peole always like to ask
like this "How far is it...
分类：
其他好文 时间：
2014-05-25 22:47:22
阅读次数：
283
