Evaluate_J.py

编译器，语法分析程序，词法分析程序，词法生成器(Compiler, Grammar Analysis Program, Lexical Analysis Program, Lexical Generator)

Visual C#修改计算机名，修改电脑名称为另一个自定义的新名称，代码较简单，这里不多做介绍了，运行界面如示例截图所示。以下为核心部分代码，先睹为快，完整源码项目请下载： 　　[DllImport("kernel32.dll")] 　　private static extern int SetComputerName(string ipComputerName);//重写API函数 　　private void Frm_Main_Load(object sender, EventArgs e) 　　{ 　　 Computer computer = new Computer();//创建计算机对象 　　 textBox1.Text = computer.Name;//显示计算机名称 　　} 　　private void button1_Click(object sender, EventArgs e) 　　{ 　　 if (textBox2.Text == "")//判断计算机名称是否为空 　　 { 　　 MessageBox.Show("计算机名称不能为空！"); 　　 } 　　 else 　　 { 　　 SetComputerName(textBox2.Text);//修改计算机名称 　　 MessageBox.Show("计算机名称修改成功，请重新启动计算机使之生效！"); 　　 } 　　}

用Verilog语言编写程序实现8比特约翰逊计数器(Write a program in Verilog language to implement the 8 bit Johnson counter.)

用VB实现windows关机 用VB实现windows关机-windows with VB with VB shutdown windows shutdown

VB6实现图片旋转操作，类似PhotoShop中的旋转功能，可进行图片的360度、270度、90度旋转，右侧为结果区，左侧图像可出每一步旋转后的效果，比较简单的VB图像操作例子。

51单片机C语言学习杂记!里面有作者的经验之谈!(51 microcontroller C language learning miscellanies! Inside the author explains!)

俄罗斯方块是一款风靡全球的掌上游戏机和PC机游戏，它造成的轰动与创造的经济价值可以说是游戏史上的一件大事。它由俄罗斯人阿列克谢• 帕基特诺夫发明，故得此名。俄罗斯方块的基本规则是移动、旋转和摆放游戏自动输出的各种方块，使之排列成完整的一行或多行并且消除得分。它看似简单却变化无穷，俄罗斯方块上手极其简单，但是要熟练地掌握其中的操作与摆放技巧，难度却不低。作为家喻户晓老少皆宜的大众游戏，其普及程度可以说是史上任何一款游戏都无法相比的。相信大多数人都还记得为它痴迷得茶不思饭不想的那个俄罗斯方块时代。由于俄罗斯方块具有的数学性、动态性与知名度，也经常拿来作为游戏程序设计的练习题材。(Tetris is a popular the global handheld console and PC games, it caused a sensation with the creation of economic value can be said that the game in the history of a major event. It invented by the Russians Alexey • Pajitnov, it was this name. The basic rules of Tetris moving, rotating and placing games automatically output a variety of boxes, arranged in a complete one or more lines and eliminate the score. It seems simple, but endless variations, Tetris is extremely simple to get started, but to be proficient in the operation and placed skills, the difficulty is not low. As the household ages Volkswagen games, its pervasiveness can be said that the history can not be compared to any game. I believe most people still remember it was obsessed tea does not think Rice did not want that Tetris era. Tetris has math, dynamic and well-known, often being used as the theme of game programming practice.)

说明：  K近邻算法。(k-Nearest Neighbor，KNN)，是一个理论上比较成熟的方法，也是最简单的机器学习算法之一。该方法的思路是：在特征空间中，如果一个样本附近的k个最近(即特征空间中最邻近)样本的大多数属于某一个类别，则该样本也属于这个类别。(K-nearest neighbor algorithm. K-nearest neighbor (KNN) is a mature method in theory and one of the simplest machine learning algorithms. The idea of this method is: in the feature space, if most of the k nearest (i.e. the nearest) samples near a sample belong to a certain category, then the sample also belongs to this category.)

经典的群面试题 欢迎下载哦 说不定有意外的惊喜-Classic group face questions welcome download Oh maybe there are surprises

论坛源码，采用ACCESS数据库，可不需修改而直接使用-Forum source using ACCESS database, without modification, the use of direct