有趣的小程序(螺旋矩阵输出)

在VC下的一个小型计算器-the VC of a small calculator

A simple and fast implementation of a Kalman Filter.

糊涂先生给他的五个朋友写信，他写了五封信，但是当他的朋友收到信后，都告诉他：“你的信寄错了”。那么请你计算一下：出现这种情况的概率有多少？（假设糊涂先生是随机地往信封里装信的），你能不能把所有的情况都列出来呢-Mr. foolish to write him five friends, he wrote five letters, but when his friend received a letter, told him:

资源描述本程序是关于模糊粒子群优化算法的程序，具有用于优化函数等功能，通过改变代价函数优化不同函数等。

To solve Ax = b given an initial approximation x(0).**   INPUT:   the number of equations and unknowns n; the entries*            A(I,J), 1

这是一个实现二叉树的代码，关于二叉树的所有操作都在其中，遍历、增加、删除、修改等。生成一个二叉树，先生成一个根节点，之后插入的节点的值与其比较，小于则放在左边，大于则放在右边。依次如此下去，可得一个完整的二叉树。二叉树主要是用来组织数据的，通过这种组织方式可以很好地对数据进行相应的增删查改等基础操作。

应用背景 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS"" AND  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF  * SUCH DAMAGE.关键技术 * Redistribution and use in source

雅克比算法，计算结构自振特征的基本方法，可求解结构的所有阶次振型和自振频率-Jacques algorithm to calculate structural vibration characteristics of the basic methods can solve all the structural order of vibration and vibration frequency

对以下6种常用的内部比较排序算法进行比较，气泡排序，直接插入排序、简单选择排序、快速排序、shell排序、堆排序。

using System; using System.Drawing; using System.Collections; using System.ComponentModel; using System.Windows.Forms; using System.Data; using System.Runtime.InteropServices; using System.IO; namespace 计算器 { /// /// Form1 的摘要说明。 /// public class Form1 : System.Windows.Forms.Form { private System.Windows.Forms.TextBox textBox1; private System.Windows.Forms.Label label1; private System.Windows.Forms.Button button1; private System.Windows.Forms.Button button2; private System.Windows.Forms.Button button3; private System.Windows.Forms.Button button4; private System.Windows.Forms.Button button5; private System.Windows.Forms.Button button6; private System.Windows.Forms.Button button7; private System.Windows.Forms.Button button8; private System.Windows.Forms.Button button9; private System.Windows.Forms.Button button11; private System.Windows.For