yuesehuhuan

建立试题库文件，随机产生n个题目； 题目涉及加减乘除，带括弧的混合运算； 利用栈求解表达式的值； 随时可以退出； 保留历史分数，能回顾历史，给出与历史分数比较后的评价( The establishment of test database file, the subject of n randomly generated topics related to addition, subtraction, mixed operations with parentheses use the value of the expression stack solution ready to quit to preserve the historical scores, can look back at history, and history gives the comparison of scores Evaluation 保留历史分数，能回顾历史，给出与历史分数比较后的评价)

用分治算法（O(nlogn)复杂度）实现寻找n个点中最邻近点对,输出为最邻近距离的平方(Looking for n points nearest point, the output of the nearest neighbor distance squared using the divide-and-conquer algorithm (O (nlogn) complexity))

说明：  用链表的方式实现多项式的加减，其中结构体包含幂次和系数。(Polynomial addition and subtraction with a list of ways in which the structure and contains the power of coefficients.)

这个是数据结构课程设计中阿黄的CD的程序代码的工程文件包(This is a data structure curriculum design A yellow CD program code works package)

说明：  该程序实现二叉树的遍历功能，能够打印出二叉树的节点(The program realization of the binary tree traversal function, is capable of printing out the binary tree node)

说明：  数据结构课上作业实现了一个多项式乘法的功能有注解(Job class data structure implements a polynomial function of multiplication comments)

输入N个点的坐标，判断这N个点能否构成一个凸多边形。(Enter the coordinates of N points, to determine whether the N points form a convex polygon.)

此程序用于解决8皇后问题，运行后输出8皇后问题的所有解(This program is used to solve the 8 queens problem, all solutions of 8 queens problem output operation.)

电梯模拟，实现一个模拟电梯的环境，用C程序实现的，封装良好(elevator modify)

有助于c++的初学者在平日的学习中更好的学习(Contribute to better learning c++ beginners learning on weekdays)