简单的A-star寻路算法，给出了几种不同的地图，并得到正确的寻路结果-A-star a simple routing algorithm, are given several different types of maps, and the results of the correct routing

本文对互联网上常用的MIME编码作了简单介绍，详细说明了Base64编码的原理和方法，并给出具体 实现的算法程序，最后讨论其在简单加密中的应用。-This commonly used on the Internet MIME encoding made a brief introduction, a detailed descr iption of the principles and methods of Base64 encoding, and gives concrete realiz