最小树结构-普利姆

标签：编程   二叉树   数据   java   结构   

import java.util.Scanner;
//普利姆
public class Main {
	static final int MAXVEX =65535;
	static final int MINVEX =65535;
	public static void main(String[] args) {
		MyGrop p = new MyGrop();
		MinSpanTree_frim(p);
	}
	static void MinSpanTree_frim (MyGrop G){
		 int min , i , j , k;
		 int[] adjvex = new int[MAXVEX]; //保存相关定位点得下标
		 int[] lowcost =  new int[MAXVEX];//保存相关定点间边的权值
		 adjvex [0]=0;   //V0作为最小数的跟的开始
		 lowcost [0]=0;  //V0diyige加入
		 //初始化从操作
		 for(i =1 ;i<G.a ;i++ ){
			 lowcost[i] = G.src[0][i];//将零阶矩阵第0行数据填入
			 adjvex [i]=0;
		 }
		 //构造最小数
		 for (i=1 ;i<G.a; i++){
			 min = MINVEX;
			 j=1;
			 k=0;
			 //遍历节点
			 while(j<G.a){
				 //    自己和自己连线               
				 if(lowcost[j]!=0 && lowcost[j] <min){
					 min = lowcost[j];
					 k=j;//发现较小的下标
				 }
				 j++;
			 }
			 System.out.println("("+adjvex[k]+")--"+lowcost[k]+"--("+k+")");
			 lowcost[k]=0;//将权值设置为零
			 for(j=1;j<G.a;j++){
				 if(lowcost[j]!=0 && G.src[k][j]<lowcost[j]){
					 lowcost[j] = G.src[k][j];
					 adjvex[j] =k;
				 }
			 }
		 }
	}
}

class MyGrop{
	final int MINVEX =65535;
	int a = 9;
	int src[][] = 
		{
		 {0,10,MINVEX ,MINVEX ,MINVEX,11 ,MINVEX ,MINVEX,MINVEX },
		 {10,0,18,MINVEX ,MINVEX ,MINVEX,16,MINVEX,12},
		 {MINVEX,18,0,22,MINVEX,MINVEX,MINVEX,MINVEX,8},
		 {MINVEX,MINVEX,22,0,20,MINVEX,MINVEX,16,21},
		 {MINVEX,MINVEX,MINVEX,20,0,26,MINVEX,7,MINVEX},
		 {11,MINVEX,MINVEX,MINVEX,26,0,17,MINVEX,MINVEX},
		 {MINVEX,16,MINVEX,MINVEX,MINVEX,17,0,19,MINVEX},
		 {MINVEX,MINVEX,MINVEX,16,7,MINVEX,19,0,MINVEX},
		 {MINVEX,12,8,21,MINVEX,MINVEX,MINVEX,MINVEX,0}};
	void setFun(){
		Scanner Scan = new Scanner(System.in);
		int i=0;int j=0;
		while(i++<a){
			while(j++<a){
				src[i][j]=Scan.nextInt();
			}
		}
	}
}

最小树结构-普利姆

标签：编程   二叉树   数据   java   结构   

原文地址：http://blog.csdn.net/u012651389/article/details/44922547