学数据结构时最简单的两个应用的实现。一个是停车场，含有工程文件在内的所有文件。一个是通讯录，只有cpp文件。请在vc下运行，其他环境可能需要其他头文件。-Two simple applications using the knowaledge of <data structure and algorithm>. One is a parking app, with all files included. Another is a phone book . Both run wi

精确估计双音多频信号的频率 ◆通过不同窗函数，画语图分析双音多频信号 ◆估计各个时段的频率，频谱分辨率要求≤10Hz（含戈泽尔算法） ◆检测信号包含的电话号码信息 -Accurate estimation of the frequency of a dual tone multi frequency signal. ◆Through different window functions, the picture is drawn to analyze the dual ton