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advancedxy's blogScala Programmer && Open Souce Project Contributor && Vimer
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http://www.advancedxy.com/
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xianjin ye
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CHINA
View this contact
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xianjin ye
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yq campus o●●●●●●●●●●● university
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CHINA
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advancedxy's blog | advancedxy.com Reviews
https://advancedxy.com
Scala Programmer && Open Souce Project Contributor && Vimer
advancedxy.com
Permutations and Cantor expression · Exploring the world
http://www.advancedxy.com/blog/2015/01/16/permutations-and-cantor
Permutations and Cantor expression. 16 Jan, 2015. Middot; Read in about 3 min · (458 Words). Cantor Expression And nth Permutation. Permutation(排列) 和 Combination(组合) 是数学中的经典计数问题, 高中的数学中有一 小部分知识是关于计算排列数和组合数的, 在大学的后续学习中, 排列和组合更是在统计概 率应用颇多. 而在计算机科学领域, 我们更关心的是列出排列和组合. 本文是我在完成 hackerrank 上面的 Project Euler #24. 后, 以及之前在 Leetcode. 刷题的时 候碰到的排列相关的问题, 决定写篇小文章来记述一下其中涉及到 nth permutation 和 next permutation 问题. 序列[1, 2, 3] 的全部排列依序为[1,2,3], [1,3,2], [2,1,3], [2,3,1], [3,1,2], [3,2,1]. X = a nn! A {n 1}(n 1)! 1 比第四个数小的数...
overview of lz4 compression algorithm · Exploring the world
http://www.advancedxy.com/blog/2014/01/15/overview-of-lz4-compression-algorithm
Overview of lz4 compression algorithm. 15 Jan, 2014. Middot; Read in about 1 min · (105 Words). Google Code项目上的介绍文字. {% blockquote Yann Collet http:/ code.google.com/p/lz4/. Lz4介绍 %} LZ4 is a very fast lossless compression algorithm, providing compression speed at 400 MB/s per core, scalable with multi-cores CPU. It also features an extremely fast decoder, with speed in multiple GB/s per core, typically reaching RAM speed limits on multi-core systems. {% endblockquote %}. 2012 - 2016 advancedxy.com.
Interview questions: union find solutions · Exploring the world
http://www.advancedxy.com/blog/2014/02/13/interview-questions-union-find-solutions
Interview questions: union find solutions. 13 Feb, 2014. Middot; by Xianjin YE · Read in about 2 min · (367 Words). 最近在学习Coursera上的 Algorithms, Part I. 其每个week除了正常的Programming Assignment外还有面试问题.由于面试问题没有提交评分要求,想来在blog这里分享解决方案应该是没有违反honor code的.故这篇blog将是Algorithms面试问题题解系列的第一篇. 这是个非常典型的Union Find问题.由于题目中给定了友谊是等价关系,也即表示友谊有自反性(自己是自己的朋友),传递性(A和B是朋友,B和C是朋友,那么A和C也是朋友).那么什么时候整个网络是联通的? A和所有其他成员都是朋友(不管是直接朋友还是间接朋友,从等价关系上来看,这两个是一致的). 用Union Find的来建模上述问题便是:. 一开始所有人都只是跟自己是朋友 - Union Find数据初始化. 首先,得确定一个问题,就是remove和find操...
Problems with Mongodb deployment · Exploring the world
http://www.advancedxy.com/blog/2013/12/22/arrays-in-mongodb
Problems with Mongodb deployment. 22 Dec, 2013. Middot; Read in about 1 min · (102 Words). 大约一个月前,我们的开发向我们提出他们一直在用的mongodb集群插入速度极其缓慢,希望我们能够登录到机器查看一下机器的状态信息. 我上去mongodb集群(这个原先不是我维护的)一看,发现他们创建的索引过多,索引的大小基本把整个集群所拥有的内存占完了.当然,同时 集群机器的负载,磁盘io一切正常.对于这样的现象,我首先要求他们将多余的索引删除,比如说是用于专门删除数据的ttl索引.对于这类索引 在数据量比较大的情况下,其实占用的内存量还是比较大的.但删除部分索引只能解放一部分索引,在综合考虑业务逻辑后,我向他们提出按时间对数据库进行分库. 为什么不进行分表呢? 导入速度的缓慢,要导入数据的集群没有使用hash字段来做分区键,新建立的数据库默认只在primary上,导入数据的时候所有写只在一个磁盘上. 有大量的网络流量,必然是数据在传输,但是我们的mongos传输出去的网络数据和接受回来的网络数据相差了一个数量级,而且这只在...
hhkb pro 2 入手 · Exploring the world
http://www.advancedxy.com/blog/2013/09/12/hhkb-pro-2-ru-shou
Hhkb pro 2 入手. 12 Sep, 2013. Middot; Read in about 1 min · (33 Words). Hhkb一直是心中的神器,执念甚深.去年在北京实习的时候,买了个hhkb lite的键盘,个人用下来感觉还是不错的.当然,身边多位基友提出:. 上述这些评价都无损我的hhkb的喜爱.个人认为既然薄膜的键盘都能够契合我的心意,想来hhkb pro的电容键盘应该是更加让人满意.于是, 在拿到全币卡的信用卡后就在日亚上入手了. 最开始是想入手hhkb pro type s,想着反正就差小几百的钱,直接一步到位了.可惜,在日亚上看下来发现type s不是amazon官方销售的,而是 PFU出售的,这样发货速度就慢下去了.并且,下单后一段时间内,信用卡还没扣钱,觉得速度太慢,就改下单pro 2了. 2012 - 2016 advancedxy.com.
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advancedxy (Xianjin YE) · GitHub
https://github.com/advancedxy
X61;dvancedxy@gmail.com. Http:/ www.advancedxy.com. May 24, 2011. Scala solutions for hackerrank. SBT plugin for Intellij IDEA plugin's developers. Library for Algorithm Contest. 36 contributions in the last year. Summary of pull requests, issues opened, and commits. Learn how we count contributions. Advancedxy has no activity during this period. You can't perform that action at this time. You signed in with another tab or window. Reload. To refresh your session. To refresh your session.
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advancedxdarkness.blogspot.com
ADVANCED x DARKNESS
Free Spooky Fun and Dark Halloween Links! Click The Links Below. My favorite creepy, silly, spooky videos). The Dragon and The Rat- Animation. Aeon Flux- Animation (PG-13). Cemetary Dare Ghost Girl- Video. Scary Doll- Animation Index. Ana Somnia- Dream Animation Project. Can't Play Dead" Stop Motion -video. Can't Play Dead" Stop Motion -photos. A Few Weird Jason Willis Video Favs. TheHOUSE- Interactive Haunted House (PG-13). Ignore "The Halloween Special", it's lame). Name that Candybar- 1 Game. Campfire...
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Maximize your Lotus investment with hands-on learning. To build exceptional XPages. Take your XPages to the next level and dive into the Java Design Element, the Dojo Base Library, and mobile development. Get hands-on experience with client- and server-Side JavaScript, the Extension Library, JSON, and more. Find out what you need to know to lock down security on your XPages and improve your XPage application performance. Bring your laptop and put what you’ve learned to use right away!
Advanced Cross Training » Lehigh Valley, PA | Just another WordPress weblog
Advanced Cross Training Lehigh Valley, PA. Welcome to Advanced Cross Training. We are the performance enhancing specialists. We offer group classes as well as personal training and are proud to be serving the Lehigh Valley, PA including Easton, Bethlehem, Allentown, Stroudsburg and Phillipsburg. Whether you are an athlete, fitness enthusiast, or want to lose weight and get fit, we have a program for you. The Summer 2012 Youth Athletic Development Program is a GO! Digital Creativity: J Taylor Design.
advancedxy's blog
Jan 16, 2015. Permutations and Cantor expression. Jan 9, 2015. Feb 13, 2014. Interview questions: union find solutions. Jan 15, 2014. Overview of lz4 compression algorithm. Dec 22, 2013. Problems with Mongodb deployment. Nov 21, 2013. How to setup logrotate script for mongodb. Sep 12, 2013. Hhkb pro 2 入手. Sep 3, 2013. Get twitter's timeline back to octopress. Scala Programmer & Open Souce Project Contributor & Vimer.
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Advanced Motorsports Yamaha Union ON
Welcome to Advanced Motorsports Ltd. the area's number one servicing dealer. New non Current Inventory. Was started in April 2004 by current owners Larry Parker and Dean Parker . We began as a small shop doing parts and service only, until 2006 when Yamaha came on board. We are a small family business that prides itself on honesty, integrity and personal service. In closing, our friendly knowledgeable staff is available at all times to meet your sales or service needs. At Advanced Motorsports we realize ...
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