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分类:其他好文   时间:2014-09-09 15:56:28    阅读次数:154
Leetcode 细节实现 Longest Common Prefix
Longest Common Prefix  Total Accepted: 17298 Total Submissions: 63704My Submissions Write a function to find the longest common prefix string amongst an array of strings. 题意...
分类:其他好文   时间:2014-09-09 13:16:38    阅读次数:135
mac 系统显示隐藏文件
苹果Mac OS X操作系统下,隐藏文件是否显示有很多种设置方法,最简单的要算在Mac终端输入命令。显示/隐藏Mac隐藏文件命令如下(注意其中的空格并且区分大小写):显示Mac隐藏文件的命令:defaults write com.apple.finder AppleShowAllFiles -bool true隐藏Mac隐藏文件的命令:defaults write com.apple.finder...
分类:其他好文   时间:2014-09-09 12:47:48    阅读次数:223
MapReduce:详解Shuffle过程
Shuffle过程是MapReduce的核心,也被称为奇迹发生的地方。要想理解MapReduce, Shuffle是必须要了解的。我看过很多相关的资料,但每次看完都云里雾里的绕着,很难理清大致的逻辑,反而越搅越混。前段时间在做MapReduce job 性能调优的工作,需要深入代码研究MapRedu...
分类:其他好文   时间:2014-09-09 11:33:18    阅读次数:207
Learn Python From 'Head First Python' [2] : Sharing
1.publish2.update print_lolPS:for Step 1.write the code in to a py file. put the py file into a folder named nester. new a py file named 'setup' and t...
分类:编程语言   时间:2014-09-09 10:44:28    阅读次数:309
页断裂(partial write)与doublewrite技术
mysql double write (二次写)是mysql innodb存储引擎的一个重要特性,本人这两天翻阅了相关的资料,结合自己已有的知识,说说自己对double write的理解,供各位看官参考。页断裂(partial write)double write技术innodb为解决页断裂(...
分类:其他好文   时间:2014-09-09 10:42:58    阅读次数:228
Leetcode dfs Sudoku Solver
Sudoku Solver  Total Accepted: 11799 Total Submissions: 56732My Submissions Write a program to solve a Sudoku puzzle by filling the empty cells. Empty cells are indicated by the character...
分类:其他好文   时间:2014-09-07 13:33:25    阅读次数:184
Search a 2D Matrix <leetcode>
Write an efficient algorithm that searches for a value in anmxnmatrix. This matrix has the following properties:Integers in each row are sorted from l...
分类:其他好文   时间:2014-09-07 10:58:14    阅读次数:185
ruby on rails上传报编码错误
Encoding::UndefinedConversionErrorinProductsController#create"\xFF"fromASCII-8BITtoUTF-8在使用ruby1.9.3做上传照片的时候,报这个错误,解决办法是将控制器里的File.open("#{Rails.root}/app/assets/p_w_picpaths/"+new_name,"w"){|file|file.write(img_data)}换为File.o..
分类:其他好文   时间:2014-09-07 03:22:55    阅读次数:199
Leetcode dfs Binary Tree Postorder Traversal II
Sudoku Solver  Total Accepted: 11752 Total Submissions: 56537My Submissions Write a program to solve a Sudoku puzzle by filling the empty cells. Empty cells are indicated by the character...
分类:其他好文   时间:2014-09-06 22:37:04    阅读次数:244
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