启发式搜索算法是人工智能里面比较重点的一种算法，A算法又是启发式搜索里面比较典型的算法，这里用A算法做了一个小程序，以便我们更好的理解A算法。-Heuristic search algorithm is the focus of the artificial intelligence inside is A kind of algorithm, the algorithm is A heuristic search in the typical algorithm, here with A algorithm made A small program, so that we can better understand A algorithm.