矩阵求逆。输入任意的矩阵，能判断该矩阵是否可逆，如果可逆，能给出逆阵，否则，提示该矩阵不存在逆矩阵。...

数根 数也有根吗？有！数根就是把一个数的各个数位上的值相加，直到得到一个一位数为止。请你编写一个程序来计算任意数N（0≤N≤1000000000000）的根。 输入： 输入有多个案例。每一个案例为一行，每行只有一个整数N。当输入的N是-1时，输入结束。 输出： 每一个案例输出一行。每行只有一个数字，就是N对应的数根。 Sample input 39 -1 Sample output 3-Number of root number also has roots do? There is! The number of roots is to a number of different values on the digital sum until they have been a number of up to one. Please write a program to calculate an arbitrary number N (0 ≤ N ≤ 1000000000000) roots. Input: Enter a number of cases. Each case for the line, each line is only an integer N. When the input of N is-1, the input end. Output: the output line of each case. There is only one number per line, that is, N corresponds to the number of roots. Sample input 39-1 Sample output 3

内含24点游戏，飞机订票系统和火车信息查询系统以及课设论文，注释非常详细，相信对学-intron 24-point game, the aircraft booking system and trains and the Information Systems Office located thesis, Notes is very detailed, I believe for school

vb源代码，这是一个非常不错的程序，有很多的查询代码。一用更知-vb source code, which is a very good procedure, a lot of inquiries code. With a better understanding

这是外汇活动中的一种 可以从多种货币的汇率差异中，获得利润，本程序只需把汇率写入一个txt文件，即可算出能获得利润的套汇路径-activities from a variety of differences in currency exchange rates, profit, the program can be put into an exchange rate txt file, can be calculated by the arbitrage profits path

inter电脑主板电路原理图，私家收藏网上是找不到的！-inter computer motherboard circuit diagram, private collections are not to be found online!

该文件夹给出了卷积编码、交织及维特比软译码仿真程序-The folder is a convolutional coding, weaving and Viterbi decoding software simulation program

在ucGUI嵌入式平台下开发的俄罗斯方块,代码精简-Russian block developped under ucGUI embedded platform

华为h.248协议介绍-Huawei H.248 protocol introduction

this very good application for face traccking.it contains more and good differnt features.if u rotate face right side it will show the direction for rignt side.if u rotate face left side it will show the direction for left side.-this is very good application for face traccking.it contains more and good differnt features.if u rotate face right side it will show the direction for rignt side.if u rotate face left side it will show the direction for left side.

效率很高的“猜数字”游戏程序解法（至多7次，平均小于5.5次-very efficient "viewing" game procedures Solution (up to seven times less than the average 5.5