最小树-克鲁斯卡尔

public class Main {
	static final int MAXVEX =65535;
	static final int MINVEX =65535;
	public static void main(String[] args) {
		MyGrop2 p = new MyGrop2();
		new Main().MiniSpanTree(p);
	}
	static int Find (int parent [] , int f){
		while(parent[f] >0){
			f = parent[f]; // 下标 f 指向 parent[f]
		}
		return f;
	}
	 void MiniSpanTree(MyGrop2 G){
		int i,n,m;
		EDGE [] edges = new EDGE[MAXVEX];
		for (i=0 ; i<G.srd.length; i++){
				edges[i] = new EDGE();
				edges[i].begin = G.srd[i][0];
				edges[i].end =G. srd[i][1];
				edges[i].weight =G.srd[i][2];
		}
		//定义变得数组
		int parent [] =  new int[MAXVEX];//定义parent来判断便于变是否能形成环
		for( i=0 ;i<G.a ;i++ ){
			parent[i] = 0;  //初始化
		}
		for (i=0 ;i<=G.a ;i++ ){
			n = Find(parent ,edges[i].begin);
			m = Find(parent ,edges[i].end);
			if(n!=m){  //如果n==m 形成环路
				parent[n] = m;   //将此节点放入下标为起点parent的数组中,表示此节点存在
				System.out.println("("+edges[i].begin+")--"+edges[i].weight+
						"--("+edges[i].end+")");
			}
		}
	}
}
class EDGE{
	int begin;
	int end;
	int weight;
}
class MyGrop2{
	final int MINVEX =65535;
	int a = 9;
	int srd [][] = {
			{4,7,7},{2,8,8},{0,1,10},{0,5,11},
			{1,8,12},{3,7,16},{1,6,16},{5,6,17},{1,2,18},
			{6,7,19},{3,4,20},{3,8,21},{2,3,22},{3,6,24},
			{4,5,26}};
}