kcode

用mathematics对boost变换器进行编程，得到分岔混沌图(using mathematics to get the bifurcation and chaos diagram of boost converter)

对三维环境进行路径规划()

学生成绩管理程序 编制一个统计学生考试分数的管理程序。 设学生成绩已以一个学生一个记录的形式存储在文件中， 每位学生记录包含的信息有：姓名，学号和各门功课的成绩。 程序具有以下几项功能：求出各门课程的总分，平均分，按姓名， 按学号寻找其记录并显示，浏览全部学生成绩和按总分由高到低显示学生信息等-The preparation of student performance management process of a statistical test scores of students of the management process. For student achievement to a student has a record stored in the document, each student records contain information are: name, school subjects and the results. Procedures have the following functions: to derive the course of the total, average, by name, by the school and its records to find its shows, browse all students score high to low according to the results and information that students

The fourth edition of the python learning manual

说明：  DUCUMENT PLAXIS UTILISATION

说明：  根据输入的月、日、时，来计算太阳方位角和高度角(According to the input month, day, hour, to calculate the solar azimuth Angle and altitude Angle)

堆栈的基本应用（用于通讯录）适于初学者加深对其理解学习。-The basic application of the stack (for address book) for beginners to learn to deepen their understanding.

本微信小程序主要是让编程者学习这种微信小程序的编写方法，根据单选题的编写方法，写出的模拟驾照考试的界面和功能，在考生选择答案后会自动换题进入下一题等，界面如图所示，与驾照考试软件的界面风格似乎挺像。

VC++实现让软件窗口多模式显示的源码实例，可以让窗体在精简、简洁模式下显示，在简洁模式下的时候，窗体的主体窗口不显示，只显示标题栏和菜单栏，另外程序中的关于窗口还实现了动画风格，还有文字滚动等特效，这个源码里的一些小技巧还是想当实用的。

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.