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使用三态树实现多个注册表子键的选择,好案例(Three states was used to implement multiple registry key choice, a good case)

说明：  Background Given a set of rectangles {R1, R2, …, Rn}, compute the area of their common intersection. i.e., Area(R1∩R2∩…∩Rn) The edges of the rectangles R1, R2, …, Rn, are either vertical or horizontal lines. For example, the intersection of 4 rectangles, R1, R2, R3, and R4, in the following figure is the shaded rectangle. Input The input contains (N + 1) lines. The first line specifies the number of rectangles N, where 1 < N < 1000. Since the sides of the rectangles are parallel to the x-axis and y-axis, each rectangle is bounded by the lines x = x1, x = x2, y = y1 and y = y2 and each subsequent line of the input file thus specifies one rectangle in the following format: x1 x2 y1 y2 such that 0 <= x1 < x2 <= 10000 and 0 <= y1 < y2 <= 10000, and x1, x2, y1 and y2 are integers. Output The output file contains the area of the intersection of all the rectangles.

路线竞走游戏,游戏规则详见源代码注释部分,全C语言编程-walking routes game, the rules of the game as detailed source notes, the entire C language programming

潮流计算，适用于电力系统专业的学生，非常实用，一看就懂(flow calculation applied to the power system of professional students, very practical, one can understand it)

基本功能都有，可自定义波特率、校验位、数据位、停止位，并且能够收发数据(Basic functions are available. It can customize baud rate, check bits, data bits, stop bits, and can send and receive data.)

用MATLAB绘制voroni图，随机产生点数，边界区域可调。(Using MATLAB to draw voroni diagram, the number of points is generated randomly and the boundary area can be adjusted.)

ECOS 源码，ECOS 是一个非常优秀的完全免费的源码开放的嵌入式实时系统，大伙一块学习学习(ECOS source, ECOS is a very good free open-source embedded real-time systems, and everyone learn a)

fluent 气液传质udf ，可模拟水界面对甲苯的吸收(fluent gas-liquid mass transfer udf, can simulate the absorption of toluene on the water interface)

解决manjaro安装过程由于显卡驱动问题造成的卡死现象， 开机进入bootloader选择nofree，光标移动到Boot,按E，在删除drive=xxx一直到空格的一串，添加代码。(To solve the problem of jamming caused by graphics card driver during the installation of manjaro, Boot into bootloader select no free, move the cursor to Boot, press E, delete drive = XXX until the blank string, add code.)

数字Costas环的matlab仿真，costas matlab实现BPSK的costas环载波同步(MATLAB writes COSTAS ring, costas matlab realizes BPSK costas ring carrier synchronization)