中文说明：基于对网络图的节点和连线的表示，建立了以弧集为基础的粒子群算法，用来解决旅行商最短路程优化问题，程序中网络图每次生成皆为随机
English Description：
Based on the representation of nodes and lines in network graph, a particle swarm optimization algorithm based on arc set is established to solve the shortest route optimization problem of traveling salesman. Every generation of network graph in the program is random