旅行商问题（TSP）的最近邻（NN）算法

近邻算法产生不同的结果，取决于选择哪个城市作为起点。此功能决定近邻路线为多个出发点，并返回这些航线的最佳。

-TSP_NN Traveling Salesman Problem (TSP) Nearest Neighbor (NN) Algorithm

The Nearest Neighbor algorithm produces different results depending on which city is selected as the starting point. This function determines the Nearest Neighbor routes for multiple starting points and returns the best of those routes