采用A*算法计算8数码问题和数独问题，界面都是采用windows程序设计api接口函数编写。-The program uses the A* algorithm to calculate 8 numbers problem and several unique problems, and the interface uses windows api programming interface function to write.

用java写的层次聚类，其中距离函数是complete（即最大值优先）(Cluster(agglomerative clustering, complete linkage method) to analyze API usage.)