交通图最短路径程序,可直接计算到达的城市间的距离，由于两个城市间距离是互相的，所以采用最优化算法-shortest path map traffic procedures can directly arrive at the inter-city distance, As the distance between the two cities is mutual and the use of optimization algorithms

基于VB语言的最短路径计算 最优化算法-Based on the shortest path calculation VB language optimization algorithms