<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[YchAlexandra的博客]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/YchAlexandra</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; YchAlexandra]]></copyright><item><title><![CDATA[爬虫入门（一）]]></title><link>https://blog.youkuaiyun.com/YchAlexandra/article/details/112212949</link><guid>https://blog.youkuaiyun.com/YchAlexandra/article/details/112212949</guid><author>YchAlexandra</author><pubDate>Tue, 05 Jan 2021 09:50:16 +0800</pubDate><description><![CDATA[什么是爬虫
爬虫就是自动化读取网络数据的应用程序

爬虫的原则

遵守法律，爬虫工具也不是法外之地。
注意爬取数据时不能影响被爬网站正常运营。
经常审查爬取数据，不能包含用户数据等敏感数据。如果包含应立即停止，修改程序。

反爬机制
目前，许多门户网站都采取了一定的反爬策略。
例如：


UA检测
IP封锁
等

反反爬策略

UA伪装
代理IP


...]]></description><category></category></item><item><title><![CDATA[更相减损法求最大公因数]]></title><link>https://blog.youkuaiyun.com/YchAlexandra/article/details/109149657</link><guid>https://blog.youkuaiyun.com/YchAlexandra/article/details/109149657</guid><author>YchAlexandra</author><pubDate>Sun, 18 Oct 2020 20:54:27 +0800</pubDate><description><![CDATA[问题描述
在之前的博客中提到使用辗转相除法求最大公约数的方法，现在介绍另外一种更容易理解的方法——更相减损法
算法思想
Created with Raphaël 2.2.0开始确认？结束我的操作yesno
int devider(int num1,int num2)
{
    while(num1!=num2)
    {
        if(num1&gt;num2)
        {
            num1=num1-num2;
        }
        else
      ]]></description><category></category></item><item><title><![CDATA[PHP MySQL(Mariadb)乱码解决]]></title><link>https://blog.youkuaiyun.com/YchAlexandra/article/details/104849789</link><guid>https://blog.youkuaiyun.com/YchAlexandra/article/details/104849789</guid><author>YchAlexandra</author><pubDate>Fri, 13 Mar 2020 21:20:04 +0800</pubDate><description><![CDATA[mysqli_set_charset($conn,"utf8");

注意 字符集是utf8不是utf-8

]]></description><category></category></item><item><title><![CDATA[Python换源(pip)]]></title><link>https://blog.youkuaiyun.com/YchAlexandra/article/details/104780968</link><guid>https://blog.youkuaiyun.com/YchAlexandra/article/details/104780968</guid><author>YchAlexandra</author><pubDate>Tue, 10 Mar 2020 19:50:30 +0800</pubDate><description><![CDATA[发发发

]]></description><category></category></item><item><title><![CDATA[Anaconda安装工具包]]></title><link>https://blog.youkuaiyun.com/YchAlexandra/article/details/104215277</link><guid>https://blog.youkuaiyun.com/YchAlexandra/article/details/104215277</guid><author>YchAlexandra</author><pubDate>Fri, 07 Feb 2020 20:42:54 +0800</pubDate><description><![CDATA[Anaconda是Python的一个发行版默认是使用conda安装工具包

conda换源

Windows版：


conda config --add channels https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/free/ 
conda config --add channels https://mirrors.tuna.tsingh...]]></description><category></category></item><item><title><![CDATA[C++链接MySQL/Mariadb]]></title><link>https://blog.youkuaiyun.com/YchAlexandra/article/details/104195029</link><guid>https://blog.youkuaiyun.com/YchAlexandra/article/details/104195029</guid><author>YchAlexandra</author><pubDate>Thu, 06 Feb 2020 13:59:32 +0800</pubDate><description><![CDATA[本次试验使用的是Qt5.13.2在Ubuntu18.04下进行：

安装MySQL/Mariadb后需要安装lib-mysqlclient/lib-mariadbclient。

本次实验使用的是Mariadb的原生API，对应的库文件路径为


/usr/lib/x86_64-linux-gnu/

引用头文件路径为


/usr/include/mysql/

注意：在QT添加头文件只需要右键...]]></description><category></category></item><item><title><![CDATA[求小于N的全部质数（素数）]]></title><link>https://blog.youkuaiyun.com/YchAlexandra/article/details/103284016</link><guid>https://blog.youkuaiyun.com/YchAlexandra/article/details/103284016</guid><author>YchAlexandra</author><pubDate>Wed, 27 Nov 2019 21:36:18 +0800</pubDate><description><![CDATA[#include &lt;iostream&gt;
using namespace std;

int main()
{
    int n;
    cin&gt;&gt;n;
    for(int i=1;i&lt;=n;i++)
    {
        int flag=0;
        for(int j=2;j&lt;i;j++)
        {
            ...]]></description><category></category></item><item><title><![CDATA[编程求解最大公约数和最小公倍数]]></title><link>https://blog.youkuaiyun.com/YchAlexandra/article/details/103283468</link><guid>https://blog.youkuaiyun.com/YchAlexandra/article/details/103283468</guid><author>YchAlexandra</author><pubDate>Wed, 27 Nov 2019 21:03:32 +0800</pubDate><description><![CDATA[问题描述：

输入两个整数，输出其


#include &lt;iostream&gt;
using namespace std;

int gcm(int m,int n)
{
    int temp;
    if(m&gt;n)
    {
        swap(m,n);
    }
    temp=m;
    while(temp!=0)
    {
        temp...]]></description><category></category></item><item><title><![CDATA[用非递归方法解决递归问题（1）]]></title><link>https://blog.youkuaiyun.com/YchAlexandra/article/details/102880665</link><guid>https://blog.youkuaiyun.com/YchAlexandra/article/details/102880665</guid><author>YchAlexandra</author><pubDate>Sun, 03 Nov 2019 11:34:49 +0800</pubDate><description><![CDATA[问题描述：

设有函数   f(n)=n 0&lt;=n&lt;=5，f(n)=f(n-1)-f(n-5)  n&gt;5。用非递归方式解决


#include &lt;iostream&gt;
#include &lt;queue&gt;
#include &lt;cmath&gt;
using namespace std;

int f(int n){
    queue&l...]]></description><category></category></item><item><title><![CDATA[python3.x 安装urllib]]></title><link>https://blog.youkuaiyun.com/YchAlexandra/article/details/88957255</link><guid>https://blog.youkuaiyun.com/YchAlexandra/article/details/88957255</guid><author>YchAlexandra</author><pubDate>Mon, 01 Apr 2019 21:05:30 +0800</pubDate><description><![CDATA[1)只装python3.x的用户


pip3 install urllib_kerberos-0.2.0

或者下载离线包

解压之后进入解压目录有powershell (cmd亦可)输入


python setup.py install

2)安装Anaconda的用户


pip install urllib_kerberos-0.2.0
...]]></description><category></category></item><item><title><![CDATA[对于二叉树深度的计算]]></title><link>https://blog.youkuaiyun.com/YchAlexandra/article/details/86078741</link><guid>https://blog.youkuaiyun.com/YchAlexandra/article/details/86078741</guid><author>YchAlexandra</author><pubDate>Tue, 08 Jan 2019 15:32:45 +0800</pubDate><description><![CDATA[数据结构中树结构是非常重要的一种结构
下面给出求深度的代码
#include &amp;lt;iostream&amp;gt;
using namespace std;
 
 
template &amp;lt;class T&amp;gt;
struct tere
{
    T data;
    tere *l;
    tere *r;
};
template &amp;lt;class T&amp;gt;
class tee
{
  ...]]></description><category></category></item><item><title><![CDATA[CMD查看Win10注册码]]></title><link>https://blog.youkuaiyun.com/YchAlexandra/article/details/86077686</link><guid>https://blog.youkuaiyun.com/YchAlexandra/article/details/86077686</guid><author>YchAlexandra</author><pubDate>Tue, 08 Jan 2019 15:19:55 +0800</pubDate><description><![CDATA[(Get-WmiObject -query 'select * from SoftwareLicensingService').OA3xOriginalProductKey


]]></description><category></category></item></channel></rss>