中文说明：parzen窗法，功能是根据样本进行概率密度函数估计。实现了对正态分布概率密度函数和均匀分布双峰概密函数进行估计
English Description：
The function of Parzen window method is to estimate the probability density function according to the samples. The probability density function of normal distribution and bimodal probability density function of uniform distribution are estimated