在c语言环境下实现快速傅立叶变换的功能，c实现fft变换

原题为： 1．有5栋5种颜色的房子 2．每一位房子的主人国籍都不同 3．这五个人每人只喝一个牌子的饮料，只抽一个牌子的香烟，只养一种宠物 4．没有人有相同的宠物，抽相同牌子的烟，喝相同牌子的饮料 已知条件： 1．英国人住在红房子里 2．瑞典人养了一条狗 3．丹麦人喝茶 4．绿房子在白房子的左边 5．绿房子主人喝咖啡 6．抽pallmall烟的人养了一只鸟 7．黄房子主人抽dunhill烟 8．住在中间房子的人喝牛奶 9．挪威人住在第一间房子 10．抽混合烟的人住在养猫人的旁边 11．养马人住在抽dunhill烟人的旁边 12．抽bluemaster烟的人喝啤酒 13．德国人抽prince烟 14．挪威人住在蓝房子旁边 15．抽混合烟的人的邻居喝矿泉水 问题：谁养鱼？ 这道迷题出自1981年柏林的德国逻辑思考学院。 据说世界上只有2％的人能出答案。 就连大名鼎鼎的爱因斯坦也成为此题大伤脑筋。-original entitled : 1. Have five five colors of the two houses. Each a master of the house three different nationality. Each of these five individuals only drink one brand of beverages, just the one brand of cigarettes, only raised a pet 4. No one has the same pet, and pumping the same brand of cigarettes, drink the same brand of beverages known conditions : 1. Britons living in Red House Lane 2. Swede custody of a dog 3. Denmark tea 4. Green house at the White house left five. Green coffee house owner 6. Pallmall pumpin

C语言基本排序算法，经过测试！-C language basic sorting algorithm, the test!

本文档提供了基于openssl的ECDSA算法实现  提供了密钥对生成，签名，验签，获得椭圆曲线的值，设置椭圆曲线的值等接口。

给定n个结点的有向图的邻接矩阵，可判断该图是否为强连通的，单向连通的，或弱连通的。-For a given n-node directed graph adjacency matrix, can determine whether the plan strongly connected, and one-way connected, or weak connectivity.

3D克希霍夫偏移程序。利用c语言编写的三维迭前偏移的代码，算法结果正确，精度高，具有很好的实用性-The use of three-dimensional Diego c language code before the cheap, algorithms result is correct, high precision, with a good practical 

分段算法的程序，很好的。绝对简练-Segmentations procedures very well. Absolutely concise

客户端之间发送PING报文，客户端接受其他客户端的PING报文，回复信息。个人想法：通过UDP连接，客户端与服务器建立连接，登录只要用户名（不能重复），能从服务器查询在线用户。

提供一个直接搜索算法程序，具有全局寻优能力。-provide a direct search procedures, and have an overall optimization capabilities.

数值积--- 复合求积公式对积分问题的求解功能 用复合梯形求积公式和复合抛物线公式，对给定的积分问题进行计算。-plot--- composite numerical quadrature formula to solve the problem of integration functions for composite trapezoidal plot formula and compound parabolic formula, the right to issue integral calculation.

应用背景2011: Peer-to-Peer 38 and 60 GHz in Austin Texas Cellular (rooftop-to-ground) 2012: Cellular 28 GHz in New York City 2013: Cellular and Backhaul 72 GHz in New York City 2013: Capacity Analysis and Channel Models for 5G关键技术Links made at large range of receiver and transmitter angles • Many scatterers near both RX and TX when placed 1.5m above ground • Antenna Beam-steering can help make several NLOS links • Objects, such as brick, reflect 38 GHz better than 60 GHz due to lower diffusive scattering.