编写的warshall算法、级别划分的算法的综合性算法。由于课程没要求进行编写区域划分算法，而区域划分是级别划分的前提，因此该算法中也把区域算法进行了编程实现-Prepared warshall algorithm, the algorithm-level partition algorithm integrated. As the program did not require the preparation of regional division algorithm, which is the level of division of the regional division of the premise, so the algorithm is also the regional programming algorithm