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英文阅读--20140909NPR
From A Chinese Apartment ToWall Street Darling: The Rise Of Alibaba ==>华尔街宠儿Jack Ma speaks in Hangzhou, China, on May 10, 2013. Ma shot to fame as the...
分类:其他好文   时间:2014-09-11 22:13:42    阅读次数:351
mongodb集群的分布式锁的实现研究
分布式锁的作用 一般来讲,锁的作用是在于解决不同的执行流之间对于同一个资源的竞争而产生的问题。分布式锁的作用就在于解决分布式程序中,分布在不同机器上的执行流对于资源的竞争问题。在mongodb的cluster上,...
分类:数据库   时间:2014-09-11 19:38:22    阅读次数:291
Leetcode- Search Insert Position
Given a sorted array and a target value, return the index if the target is found. If not, return the index where it would be if it were inserted in order. You may assume no duplicates in the array。...
分类:其他好文   时间:2014-09-11 17:28:02    阅读次数:207
Leetcode dfs&dp Triangle
Triangle  Total Accepted: 17536 Total Submissions: 65508My Submissions Given a triangle, find the minimum path sum from top to bottom. Each step you may move to adjacent numbers on the row...
分类:其他好文   时间:2014-09-11 07:42:01    阅读次数:194
Leetcode: Sudoku Solver
Write a program to solve a Sudoku puzzle by filling the empty cells.Empty cells are indicated by the character '.'.You may assume that there will be o...
分类:其他好文   时间:2014-09-11 07:39:41    阅读次数:161
【LeetCode】Evaluate Reverse Polish Notation
Evaluate Reverse Polish NotationEvaluate the value of an arithmetic expression inReverse Polish Notation.Valid operators are+,-,*,/. Each operand may ...
分类:其他好文   时间:2014-09-10 14:09:30    阅读次数:182
[Leetcode][JAVA] Evaluate Reverse Polish Notation
Evaluate the value of an arithmetic expression inReverse Polish Notation.Valid operators are+,-,*,/. Each operand may be an integer or another express...
分类:编程语言   时间:2014-09-10 05:07:09    阅读次数:200
oracle cluster verfication utility failed
节点间的时间同步对于Oracle来说是非常重要的,在11g版本之前往往通过搭建NTP服务器完成时间同步。在Oracle11g中新增加了一个CTSS(ClusterTimeSynchronizationServices,集群时间同步服务)服务,用来完成集群节点间时间同步。在安装GridInfrastructure过程中,如果没有发现节..
分类:数据库   时间:2014-09-10 02:55:00    阅读次数:238
R语言数据挖掘相关包总结-转帖
与数据挖掘有关或者有帮助的R包和函数的集合。1、聚类常用的包: fpc,cluster,pvclust,mclust基于划分的方法: kmeans, pam, pamk, clara基于层次的方法: hclust, pvclust, agnes, diana基于模型的方法: mclust基于密度的方...
分类:其他好文   时间:2014-09-10 00:13:09    阅读次数:297
poj3349--Snowflake Snow Snowflakes(hash)
Snowflake Snow Snowflakes Time Limit: 4000MS   Memory Limit: 65536K Total Submissions: 31423   Accepted: 8297 Description You may have heard that no two snowflakes are al...
分类:其他好文   时间:2014-09-09 20:09:19    阅读次数:259
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