用kruskal算法找最接近点对并分组。如我给出的测试数据，给定2000个多点，将最接近的点放在一个组里，最后分成九个组。程序可直接运行。-Algorithm used to find the closest point kruskal and groups. If I give the test data given over 2000 points, the closest point in a group, and finally divided into nine groups. Pro