<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[However_day的博客]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/However_day</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; However_day]]></copyright><item><title><![CDATA[浮点数的表示之IEEE754record+浮点数加减]]></title><link>https://blog.youkuaiyun.com/However_day/article/details/120772058</link><guid>https://blog.youkuaiyun.com/However_day/article/details/120772058</guid><author>However_day</author><pubDate>Thu, 14 Oct 2021 20:53:36 +0800</pubDate><description><![CDATA[1.浮点数的表示之IEEE754















2.浮点数的加减










]]></description><category></category></item><item><title><![CDATA[计算机组成原理cache与主存映射的record]]></title><link>https://blog.youkuaiyun.com/However_day/article/details/120728267</link><guid>https://blog.youkuaiyun.com/However_day/article/details/120728267</guid><author>However_day</author><pubDate>Tue, 12 Oct 2021 18:05:22 +0800</pubDate><description><![CDATA[总结：
























]]></description><category></category></item><item><title><![CDATA[如何在百度网盘网页端实现视频的快速播放最新版]]></title><link>https://blog.youkuaiyun.com/However_day/article/details/118960309</link><guid>https://blog.youkuaiyun.com/However_day/article/details/118960309</guid><author>However_day</author><pubDate>Wed, 21 Jul 2021 10:21:17 +0800</pubDate><description><![CDATA[网上找了好多的关于百度网盘加速的东西，但是好像都失效了，最后我是下载的firefox 标准版，里面有自带的视频加速，美滋滋啊，gkd啊

下载地址：https://www.firefox.com.cn/




]]></description><category></category></item><item><title><![CDATA[navicat导出数据库文档记录（毕设自用）照着做就行]]></title><link>https://blog.youkuaiyun.com/However_day/article/details/116557975</link><guid>https://blog.youkuaiyun.com/However_day/article/details/116557975</guid><author>However_day</author><pubDate>Sun, 09 May 2021 08:01:14 +0800</pubDate><description><![CDATA[新建查询


SELECT
COLUMN_NAME 列名,
DATA_TYPE 字段类型,
COLUMN_KEY 索引,
CHARACTER_MAXIMUM_LENGTH 长度,
IS_NULLABLE 是否为空,
COLUMN_DEFAULT 默认值,
COLUMN_COMMENT 备注
FROM
INFORMATION_SCHEMA.COLUMNS
where
table_schema ='数据库名称'
and
table_name = '表名称'











然后一直下一步，点击开始开始..]]></description><category></category></item><item><title><![CDATA[面向对象三大特征的理解（为啥定义抽象类）]]></title><link>https://blog.youkuaiyun.com/However_day/article/details/115399552</link><guid>https://blog.youkuaiyun.com/However_day/article/details/115399552</guid><author>However_day</author><pubDate>Fri, 02 Apr 2021 17:03:56 +0800</pubDate><description><![CDATA[面向对象的三大特征一、基本介绍1. 封装2.继承2.1、重写2.2、重载3、多态4、为什么要定义抽象类？？？抽象类和接口的区别
一、基本介绍
1. 封装
    封装是指把一个对象的状态信息（也就是属性）隐藏在对象内部，不允许外 
 部对象直接访问对象的内部信息。但是可以提供一些可以被外界访问的方法 
 来操作属性。

下面就是一个例子
public class Student {
    private int id;//id属性私有化
    private String name;//name属性私有]]></description><category></category></item><item><title><![CDATA[成员变量和类变量和局部变量的终极总结]]></title><link>https://blog.youkuaiyun.com/However_day/article/details/115384205</link><guid>https://blog.youkuaiyun.com/However_day/article/details/115384205</guid><author>However_day</author><pubDate>Thu, 01 Apr 2021 21:22:22 +0800</pubDate><description><![CDATA[成员变量和类变量、局部变量区别一.理解二.成员变量和类变量的区别1、成员变量和类变量的区别2、调用方式不同3、别名不同4、数据存储位置不同二、弊端：三、什么时候定义静态成员呢？或者说：定义成员时，到底需不需要被静态修饰呢？1、成员变量。（数据共享时静态化）2、成员函数。（方法中没有调用特有数据时就定义成静态）3、成员变量和静态变量的区别：
一.理解
   由static修饰的变量称为静态变量，其实质上就是一个
   全局变量。如果某个内容是被所有对象所共享，那么该
   内容就应该用静态修饰；没有被静态修饰]]></description><category></category></item><item><title><![CDATA[java数据结构那些事]]></title><link>https://blog.youkuaiyun.com/However_day/article/details/112851926</link><guid>https://blog.youkuaiyun.com/However_day/article/details/112851926</guid><author>However_day</author><pubDate>Tue, 19 Jan 2021 21:59:13 +0800</pubDate><description><![CDATA[学习一项语言，除了一些基本语法的使用方法，最重要的无外乎其常用数据结构，其实学习一项语言不难，真正难的是

用语言去解决实际问题，其中我感觉里面有数组，ArrayList，ListedList ，Stack，HashSet，Dictionary

其中Collections是一个类，容器的工具类,就如同Arrays是数组的工具类

我们都知道数组是最基本的数据结构，但普通的数组的命名（int a[10]={.......}）有可能造成数组大小的浪费或者数组不够用

的情况，所以我们用ArrayList解决问]]></description><category></category></item><item><title><![CDATA[python菜鸟记录]]></title><link>https://blog.youkuaiyun.com/However_day/article/details/112545367</link><guid>https://blog.youkuaiyun.com/However_day/article/details/112545367</guid><author>However_day</author><pubDate>Tue, 12 Jan 2021 21:08:52 +0800</pubDate><description><![CDATA[上一篇因为不会调用类对象里面的函数，所以就把类的构建给删了，直接把里面的函数放出来了，哈哈，今天终于知道了，

调用的时候直接实例化对象即可（啊这不就是以前使用Java对象的思想吗）

特以此记录





self代表类的实例，而非类

类的方法与普通的函数只有一个特别的区别——它们必须有一个额外的第一个参数名称, 按照惯例它的名称是 self。

self只有在类的方法中才会有，独立的函数或方法是不必带有self的。

self在定义类的方法时是必须有的，虽然在调用时不必传入相应的参数。


s...]]></description><category></category></item><item><title><![CDATA[python数据结构记录]]></title><link>https://blog.youkuaiyun.com/However_day/article/details/112471566</link><guid>https://blog.youkuaiyun.com/However_day/article/details/112471566</guid><author>However_day</author><pubDate>Mon, 11 Jan 2021 20:46:19 +0800</pubDate><description><![CDATA[数据结构：


]]></description><category></category></item><item><title><![CDATA[python最基础的一些语法]]></title><link>https://blog.youkuaiyun.com/However_day/article/details/112389660</link><guid>https://blog.youkuaiyun.com/However_day/article/details/112389660</guid><author>However_day</author><pubDate>Sun, 10 Jan 2021 13:10:07 +0800</pubDate><description><![CDATA[复习记录

输出格式


str='helloworld'
 
print(str)                 # 输出字符串
print(str[0:-1])           # 输出第一个到倒数第二个的所有字符
print(str[0])              # 输出字符串第一个字符
print(str[2:5])            # 输出从第三个开始到第五个的字符
print(str[2:])             # 输出从第三个开始后的所有字符
print(str[1:5:]]></description><category></category></item><item><title><![CDATA[基于栈的符号匹配]]></title><link>https://blog.youkuaiyun.com/However_day/article/details/107736011</link><guid>https://blog.youkuaiyun.com/However_day/article/details/107736011</guid><author>However_day</author><pubDate>Sat, 01 Aug 2020 20:11:44 +0800</pubDate><description><![CDATA[//StackFile.h

#include&lt;stdio.h&gt;
#include&lt;stdlib.h&gt;
#define MaxSize 10
typedef struct{
	char data[MaxSize];
	int top;
}SqStack; 
void InitStack(SqStack S){
	S.top==-1;
}
bool Push(SqStack &amp;S,char x){
	if(S.top==MaxSize==-1)
	return false;
.]]></description><category></category></item><item><title><![CDATA[matlab中max，find，min函数的总结]]></title><link>https://blog.youkuaiyun.com/However_day/article/details/105543592</link><guid>https://blog.youkuaiyun.com/However_day/article/details/105543592</guid><author>However_day</author><pubDate>Wed, 15 Apr 2020 21:49:48 +0800</pubDate><description><![CDATA[1。max函数的基本用法

.①  C = max(max(A))，返回矩阵最大值

②  D = max(A,[],1)，返回每一行的最大值，即mx1的行向量

③  E = max(A,[],2)，返回每一列的最大值，即1xm的列向量

④  F = max(A,8)，当元素小于8，用8填充

⑤  [U V] = max(A)，返回行列最大元素的行号与列号



2.find()...]]></description><category></category></item><item><title><![CDATA[编译原理的FIRST、FOLLOW、FIRSTVT、LASTVT的求法总结]]></title><link>https://blog.youkuaiyun.com/However_day/article/details/105412385</link><guid>https://blog.youkuaiyun.com/However_day/article/details/105412385</guid><author>However_day</author><pubDate>Thu, 09 Apr 2020 16:35:50 +0800</pubDate><description><![CDATA[首先呢First和Follow是一对，而Firstvt和Lastvt是一对。

First和Follow是为了画预测分析表的（在LL（1）分析法处）。

而Firstvt和Lastvt是为了画算符优先关系表。

First这里面包含了组成First（A）的两种情况：以终结符开头， 当然要把这个终结符放到A的First里以非终结符开头， 先把C的First放到A的First里再看如果C的First中...]]></description><category></category></item><item><title><![CDATA[matlab日常（2）]]></title><link>https://blog.youkuaiyun.com/However_day/article/details/105285876</link><guid>https://blog.youkuaiyun.com/However_day/article/details/105285876</guid><author>However_day</author><pubDate>Fri, 03 Apr 2020 22:02:36 +0800</pubDate><description><![CDATA[求函数正在上传…重新上传取消转存失败重新上传取消，初始点为正在上传…重新上传取消转存失败重新上传取消的解，并绘制图形。
]]></description><category></category></item><item><title><![CDATA[matlab日常]]></title><link>https://blog.youkuaiyun.com/However_day/article/details/105238637</link><guid>https://blog.youkuaiyun.com/However_day/article/details/105238637</guid><author>However_day</author><pubDate>Wed, 01 Apr 2020 10:03:29 +0800</pubDate><description><![CDATA[时间滴滴嗒滴犹似流水，如水似墨生活无需感伤，无需凝滞，心怀坦然，戒奢戒躁



阅读题：有如下数据：


			X
			
			
			1
			
			
			1.1
			
			
			1.2
			
			
			1.3
			
			
			1.4
			
		
			y
			
			
			1.00000
			
			
			1.23368
			
			
			1.55271...]]></description><category></category></item><item><title><![CDATA[爬虫初始练手]]></title><link>https://blog.youkuaiyun.com/However_day/article/details/104525419</link><guid>https://blog.youkuaiyun.com/However_day/article/details/104525419</guid><author>However_day</author><pubDate>Wed, 26 Feb 2020 21:32:03 +0800</pubDate><description><![CDATA[1.爬虫新手要点：了解request

2.xpath的书写方法，百度即可


encoding='utf8'
import json
import requests
from lxml import etree
def getPage(n):
    #选择你要爬的网址，其中n为页数
    url=f'https://maoyan.com/board/4?offset={n*10}'#.for...]]></description><category></category></item><item><title><![CDATA[jdbc链接Orcale并且实现查询]]></title><link>https://blog.youkuaiyun.com/However_day/article/details/101473371</link><guid>https://blog.youkuaiyun.com/However_day/article/details/101473371</guid><author>However_day</author><pubDate>Thu, 26 Sep 2019 20:42:23 +0800</pubDate><description><![CDATA[（一）照着教程敲了一遍主要知晓是要知晓Statement executeQuerry 以及ResultSet语句的含义


package com.company;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLExceptio...]]></description><category></category></item><item><title><![CDATA[JDBC的导入与测试笔记]]></title><link>https://blog.youkuaiyun.com/However_day/article/details/101314660</link><guid>https://blog.youkuaiyun.com/However_day/article/details/101314660</guid><author>However_day</author><pubDate>Thu, 26 Sep 2019 17:57:37 +0800</pubDate><description><![CDATA[一、基本原理

1.数据持久化：关电仍然保存



2.JDBA：直接访问数据库，jabc就是Java访问数据库的基石，

 说白了就是一个api，提供了一个统一的路径的访问方式。



3.接口实现方式





 •本地协议的JDBC的驱动程序：JDBC通过控制驱动程序实现对数据库的访问



4.Driver接口：数据库厂商提供的接口。



二、jar包导入ide...]]></description><category></category></item><item><title><![CDATA[用链表实现栈和队列]]></title><link>https://blog.youkuaiyun.com/However_day/article/details/100623992</link><guid>https://blog.youkuaiyun.com/However_day/article/details/100623992</guid><author>However_day</author><pubDate>Sun, 08 Sep 2019 13:16:33 +0800</pubDate><description><![CDATA[一、我们知道在Java中是没有指针的，那么如何在Java中创建链表呢，自我感觉比C++的好理解，Java中用类创建一个包括数据与next的类的引用就可以了。

1.首先是一个基本链表节点类的创建


public class Link {
    public long dDate;
    public Link next;

    public Link(long dd){
        ...]]></description><category></category></item><item><title><![CDATA[后缀表达式的计算]]></title><link>https://blog.youkuaiyun.com/However_day/article/details/100042080</link><guid>https://blog.youkuaiyun.com/However_day/article/details/100042080</guid><author>However_day</author><pubDate>Fri, 23 Aug 2019 16:54:49 +0800</pubDate><description><![CDATA[1.新建栈类，里面包括基本对象


public class StackX {
    private int maxSize;
    private int [] stackArray;
    private int top;

    public StackX(int size){
        maxSize=size;
        stackArray=new int[max...]]></description><category></category></item></channel></rss>