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poj 1815
DescriptionIn modern society, each person has his own friends. Since all the people are very busy, they communicate with each other only by phone. You...
分类:其他好文   时间:2014-06-15 20:44:45    阅读次数:162
LeetCode——Path Sum
Given a binary tree and a sum, determine if the tree has a root-to-leaf path such that adding up all the values along the path equals the given sum. For example: Given the below binary tree and sum ...
分类:其他好文   时间:2014-06-15 19:26:23    阅读次数:207
【Leetcode】Search a 2D Matrix
Write an efficient algorithm that searches for a value in an m x n matrix. This matrix has the following properties: Integers in each row are sorted from left to right.The first integer of each...
分类:其他好文   时间:2014-06-15 14:12:44    阅读次数:238
clustered and nonclustered indexes
SQL Server has two basics kinds of indexes. They are clustered and nonclustered indexes. There are some fundamental differences to the two which are k...
分类:其他好文   时间:2014-06-15 06:30:52    阅读次数:197
dbms_tdb包解析
The procedure or function in this packagechecks if a database is ready to betransported to a target platform.and if a database has external tables,dir...
分类:数据库   时间:2014-06-15 00:38:40    阅读次数:412
hust 1054 Broken Keyboard
题目描述Bruce Force's keyboard is broken, only a few keys are still working. Bruce has figured out he can still type texts by switching the keyboard layou...
分类:其他好文   时间:2014-06-14 21:00:09    阅读次数:444
LeetCode OJ平台上Maximum Subarray题目O(n)复杂度解决方案
原始题目如下,意为寻找数组和最大的子串,返回这个最大和即可。 Find the contiguous subarray within an array (containing at least one number) which has the largest sum. For example, given the array [?2,1,?3,4,?1,2,1,?5,4], the...
分类:其他好文   时间:2014-06-14 15:08:00    阅读次数:224
由JDK源码学习HashMap
HashMap基于hash表的Map接口实现,它实现了Map接口中的所有操作。HashMap允许存储null键和null值。这是它与Hashtable的区别之一(另外一个区别是Hashtable是线程安全的)。另外,HashMap中的键值对是无序的。下面,我们从HashMap的源代码来分析Has.....
分类:其他好文   时间:2014-06-14 09:43:49    阅读次数:304
SSH RSA host key for has changed and you have requeste
今天在209服务器上要远程登录另外一台54的服务器,结果用ssh连接提示如下错误:[root@NHL~]#sshroot@10.40.49.54 @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ @WARNING:REMOTEHOSTIDENTIFICATIONHASCHANGED!@ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@..
分类:其他好文   时间:2014-06-13 21:02:04    阅读次数:326
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