<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[po_csdn的专栏]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/po_csdn</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; po_csdn]]></copyright><item><title><![CDATA[【鸟哥 linux 基础篇】 第12章 正规表示法与 文件格式化处理]]></title><link>https://blog.youkuaiyun.com/po_csdn/article/details/36186715</link><guid>https://blog.youkuaiyun.com/po_csdn/article/details/36186715</guid><author>po_csdn</author><pubDate>Tue, 01 Jul 2014 14:57:46 +0800</pubDate><description><![CDATA[注意^符号，在[]内部bi]]></description><category></category></item><item><title><![CDATA[【算法入门经典】 已知树的前序遍历和中序遍历，求后序遍历]]></title><link>https://blog.youkuaiyun.com/po_csdn/article/details/36051703</link><guid>https://blog.youkuaiyun.com/po_csdn/article/details/36051703</guid><author>po_csdn</author><pubDate>Mon, 30 Jun 2014 22:26:10 +0800</pubDate><description><![CDATA[样例输入：
DBACEGF ABCDEFG
BCAD CBAD


样例su]]></description><category></category></item><item><title><![CDATA[【鸟哥 linux 基础篇】 第11章 认识与学习BASH]]></title><link>https://blog.youkuaiyun.com/po_csdn/article/details/36003701</link><guid>https://blog.youkuaiyun.com/po_csdn/article/details/36003701</guid><author>po_csdn</author><pubDate>Mon, 30 Jun 2014 15:57:37 +0800</pubDate><description><![CDATA[用户通过shell控制系统内核，bash为其中一种shell。]]></description><category></category></item><item><title><![CDATA[【UvaOJ 重要！】【基础题目】【Maths - Number Theory】 10392 - Factoring Large Numbers]]></title><link>https://blog.youkuaiyun.com/po_csdn/article/details/34927557</link><guid>https://blog.youkuaiyun.com/po_csdn/article/details/34927557</guid><author>po_csdn</author><pubDate>Thu, 26 Jun 2014 21:29:49 +0800</pubDate><description><![CDATA[题目链接：http://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=100&page=show_problem&problem=1333


题目意思为，输入一个大数（个+long long）]]></description><category></category></item><item><title><![CDATA[【鸟哥 linux 基础篇】 第9章 Linux 磁盘与文件系统的压缩与打包]]></title><link>https://blog.youkuaiyun.com/po_csdn/article/details/30476833</link><guid>https://blog.youkuaiyun.com/po_csdn/article/details/30476833</guid><author>po_csdn</author><pubDate>Fri, 13 Jun 2014 15:25:29 +0800</pubDate><description><![CDATA[Linux常见压缩指令]]></description><category></category></item><item><title><![CDATA[【鸟哥 linux 基础篇】 第8章 Linux 磁盘与文件系统管理]]></title><link>https://blog.youkuaiyun.com/po_csdn/article/details/30324747</link><guid>https://blog.youkuaiyun.com/po_csdn/article/details/30324747</guid><author>po_csdn</author><pubDate>Thu, 12 Jun 2014 23:27:51 +0800</pubDate><description><![CDATA[EXT文件系统]]></description><category></category></item><item><title><![CDATA[【鸟哥 linux 基础篇】 第7章 Linux档案与目录管理]]></title><link>https://blog.youkuaiyun.com/po_csdn/article/details/30319203</link><guid>https://blog.youkuaiyun.com/po_csdn/article/details/30319203</guid><author>po_csdn</author><pubDate>Thu, 12 Jun 2014 22:28:27 +0800</pubDate><description><![CDATA[四个操作目录的指令


cd：变换目录


pwd：显示当前目录


mkdir：建立新目录


rmdir：删除空目录  也可用 
rm -r 目录名 来删除整个非空目录





环境变量


诸如ls这样的指令，实际存在绝对路径 /bin/ls 中，但是无论当前处在哪个目录下，均可以执行ls命令，这是因为当前账户的/bin被放入了环境变量PATH中]]></description><category></category></item><item><title><![CDATA[【鸟哥 linux 基础篇】 第6章 Linux的档案权限与目录配置]]></title><link>https://blog.youkuaiyun.com/po_csdn/article/details/30287233</link><guid>https://blog.youkuaiyun.com/po_csdn/article/details/30287233</guid><author>po_csdn</author><pubDate>Thu, 12 Jun 2014 21:02:16 +0800</pubDate><description><![CDATA[使用者和群组
啊]]></description><category></category></item><item><title><![CDATA[【鸟哥 linux 基础篇】 第1章 - 第5章]]></title><link>https://blog.youkuaiyun.com/po_csdn/article/details/30285265</link><guid>https://blog.youkuaiyun.com/po_csdn/article/details/30285265</guid><author>po_csdn</author><pubDate>Thu, 12 Jun 2014 19:58:56 +0800</pubDate><description><![CDATA[Unix 的前身是由贝尔实验室(Bell lab.)的 Ken Thompson 利用汇编yu, 后来在 1971-1973 年间由 Dennis Ritchie 以 C 秳序询觊迚行改写,才称为 Unix。]]></description><category></category></item><item><title><![CDATA[【鸟哥 linux 基础篇】 第0章 计算机概论]]></title><link>https://blog.youkuaiyun.com/po_csdn/article/details/30284845</link><guid>https://blog.youkuaiyun.com/po_csdn/article/details/30284845</guid><author>po_csdn</author><pubDate>Thu, 12 Jun 2014 19:44:15 +0800</pubDate><description><![CDATA[1.计算机包括五大单元：输入、输出、cpu内部控制单元、算术逻辑单元、主存储器。
2.CPU处理的数据来自内存。
3.CPU的设计理念主要分为：精简指令集（RISC）和复杂指令集（CISC）。
4.CPU频率：外频指的是CPU与外部组件进行数据传输时的速度，倍频指的是CPu内部用来加速工作效能的一个倍数，二者相乘为cpu的频率。
5.一般的主板芯片分为南北桥，北桥的总线称为系统总线，为内存]]></description><category></category></item><item><title><![CDATA[【UvaOJ】【基础题目】【Maths - Number Theory】 408和350 伪随机数]]></title><link>https://blog.youkuaiyun.com/po_csdn/article/details/25820761</link><guid>https://blog.youkuaiyun.com/po_csdn/article/details/25820761</guid><author>po_csdn</author><pubDate>Wed, 14 May 2014 17:55:33 +0800</pubDate><description><![CDATA[这两道题就不给出题目，两道题s]]></description><category></category></item><item><title><![CDATA[【UvaOJ】【基础题目】【Maths - Number Theory】 10110 - Light, more light]]></title><link>https://blog.youkuaiyun.com/po_csdn/article/details/25819717</link><guid>https://blog.youkuaiyun.com/po_csdn/article/details/25819717</guid><author>po_csdn</author><pubDate>Wed, 14 May 2014 17:49:53 +0800</pubDate><description><![CDATA[Light, more light




The Problem
There is man named "mabu" for switching on-off light in our University. He switches on-off the lights in a corridor. Every bulb has its own toggle switch. That ]]></description><category></category></item><item><title><![CDATA[【UvaOJ】【基础题目】【Maths - Misc】 10014 - Simple calculations]]></title><link>https://blog.youkuaiyun.com/po_csdn/article/details/25819317</link><guid>https://blog.youkuaiyun.com/po_csdn/article/details/25819317</guid><author>po_csdn</author><pubDate>Wed, 14 May 2014 17:41:55 +0800</pubDate><description><![CDATA[Simple calculations 
The Problem


There is a sequence of n+2 elements a0, a1,…, an+1 (n 
The Input


The first line is the number of test cases, followed by a blank line.
For each test case,]]></description><category></category></item><item><title><![CDATA[【UvaOJ】【基础题目】【Maths - Misc】 10970 - Big Chocolate]]></title><link>https://blog.youkuaiyun.com/po_csdn/article/details/25817331</link><guid>https://blog.youkuaiyun.com/po_csdn/article/details/25817331</guid><author>po_csdn</author><pubDate>Wed, 14 May 2014 17:33:06 +0800</pubDate><description><![CDATA[Big Chocolate
Mohammad has recently visited Switzerland. As he loves his friends very much, he decided to buy some chocolate for them, but as this fine chocolate is very expensive(You know Mohammad i]]></description><category></category></item><item><title><![CDATA[【UvaOJ】【基础题目】【Maths - Misc】 10916 - Factstone Benchmark]]></title><link>https://blog.youkuaiyun.com/po_csdn/article/details/25817013</link><guid>https://blog.youkuaiyun.com/po_csdn/article/details/25817013</guid><author>po_csdn</author><pubDate>Wed, 14 May 2014 17:18:50 +0800</pubDate><description><![CDATA[Problem B: Factstone Benchmark
Amtel has announced that it will release a 128-bit computer chip by 2010, a 256-bit computer by 2020, and so on, continuing its strategy of doubling the word-size every]]></description><category></category></item><item><title><![CDATA[【UvaOJ】【基础题目】【Maths - Misc】 107 - The Cat in the Hat]]></title><link>https://blog.youkuaiyun.com/po_csdn/article/details/25301153</link><guid>https://blog.youkuaiyun.com/po_csdn/article/details/25301153</guid><author>po_csdn</author><pubDate>Thu, 08 May 2014 13:56:42 +0800</pubDate><description><![CDATA[﻿﻿





 The Cat in the Hat 






Background
(An homage to Theodore Seuss Geisel)
The Cat in the Hat is a nasty creature,
But the striped hat he is wearing has a rather nifty feature.]]></description><category></category></item><item><title><![CDATA[【UvaOJ】【基础题目】【Maths - Misc】 846 - Steps]]></title><link>https://blog.youkuaiyun.com/po_csdn/article/details/25301313</link><guid>https://blog.youkuaiyun.com/po_csdn/article/details/25301313</guid><author>po_csdn</author><pubDate>Thu, 08 May 2014 13:55:08 +0800</pubDate><description><![CDATA[﻿﻿





  Steps 





One steps through integer points of the straight line. The length of a step must be nonnegative and can be by one bigger than, equal to, or by one smaller than the le]]></description><category></category></item><item><title><![CDATA[【UvaOJ】【基础题目】【Maths - Misc】 10790 - How Many Points of Intersection?]]></title><link>https://blog.youkuaiyun.com/po_csdn/article/details/25300813</link><guid>https://blog.youkuaiyun.com/po_csdn/article/details/25300813</guid><author>po_csdn</author><pubDate>Thu, 08 May 2014 13:50:31 +0800</pubDate><description><![CDATA[﻿﻿





  How Many Points of Intersection? 





We have two rows. There are a dots on the top row and b dots
 on the bottom row. We draw line segments connecting every dot on the top row]]></description><category></category></item><item><title><![CDATA[【算法入门经典】 重要库函数汇总]]></title><link>https://blog.youkuaiyun.com/po_csdn/article/details/25300325</link><guid>https://blog.youkuaiyun.com/po_csdn/article/details/25300325</guid><author>po_csdn</author><pubDate>Thu, 08 May 2014 13:40:10 +0800</pubDate><description><![CDATA[﻿﻿
1.atoi 用于字符串数组转换为int，string类型要通过string.c_str()之后才能用atoi


2.strcmp 用于字符串数组的比较，相等返回0，前者大于后者返回正值，后者大于前者返回负值。


3.floor 返回小于参数的最大整数，用于截断小数部分


3.stl中map的库函数find（key） ，查找键值key所在的索引iterator]]></description><category></category></item><item><title><![CDATA[【算法入门经典】 qsort和sort的区别]]></title><link>https://blog.youkuaiyun.com/po_csdn/article/details/25300247</link><guid>https://blog.youkuaiyun.com/po_csdn/article/details/25300247</guid><author>po_csdn</author><pubDate>Thu, 08 May 2014 13:39:01 +0800</pubDate><description><![CDATA[qsort和sort的区别 


 


First  qsort


基本快速排序的方法，每次把数组分成两分和中间的一个划分值，而对于有多个重复值的数组来说，基本排序的效率较低。集成在C语言库函数里面的的qsort函数，使用 三 路划分的方法解决这个问题。所谓三路划分，是指把数组划分成小于划分值，等于划分值和大于划分值的三个部分。


函数对buf 指向的数据按升序排序。]]></description><category></category></item></channel></rss>