Posted by : Unknown Friday, 26 June 2015

 

import java.io.*;
class ShortPath
{
     public int vertex;
    public int edge;
    public int arrval[][]=new int[10][10];
    public int neigh[]=new int[10];
    public int nonnei[]=new int[10];
    public int tempnei,ntnei;
    public void getdata() throws Exception
    {
BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
    System.out.println("ENTER NO OF VERTEX==>");
    vertex=Integer.parseInt(br.readLine());   
    System.out.println("ENTER NO OF EDGE==>");
    edge=Integer.parseInt(br.readLine());
    for(int i=0;i<vertex;i++)
    {
        for(int j=0;j<vertex;j++)
        {
            if(i==j)
                arrval[i][j]=0;
            else
                arrval[i][j]=999;
        }
    }
    for(int k=0;k<edge;k++)
    {
        System.out.println("ENTER THE EDGE V1-V2");
        int v1=Integer.parseInt(br.readLine());
        int v2=Integer.parseInt(br.readLine());
        System.out.println("ENTER THE EDGE COST==>");
        int cost=Integer.parseInt(br.readLine());
        arrval[v1][v2]=cost;
        arrval[v2][v1]=cost;
    }
    }

      public void process()throws Exception
    {
        int i,j,k;
        for(i=0;i<vertex;i++)
    {
        tempnei=0;
        ntnei=0;
        for(j=0;j<vertex;j++)
        {
            if(arrval[i][j]!=0 && arrval[i][j]!=999)
                tempnei++;
            else
                ntnei++;
        }
        neigh[i]=tempnei;
        nonnei[i]=ntnei;
    }
    for(k=0;k<vertex;k++)
    {
        System.out.println("THE NUMBER OF NEIGHBOUR VERTEX==>"+neigh[k]);
            System.out.println("THE NUMBER OF NON-NEIGHBOUR VERTEX==>"+nonnei[k]);
    }
    for(k=0;k<vertex;k++)
    {
        for(i=0;i<vertex;i++)
        {
            for(j=0;j<vertex;j++)
            {
             arrval[i][j]=min(arrval[i][j],arrval[i][k]+arrval[k][j]);
            }
        }
}
    }
    public void display()throws Exception
    {
    System.out.println("SHORTEST PATH");
    System.out.println();
    for(int i=0;i<vertex;i++)
    {
            for(int j=0;j<vertex;j++)
            {
                System.out.print(arrval[i][j]+"\t");
            }
            System.out.println();
        }
    }

    public int min(int a,int b)
    {
        int c=a<b?a:b;
        return c;
    }

    public static void main(String arg[])throws Exception
    {
        ShortPath s=new ShortPath();
        s.getdata();
        s.display();
        s.process();
        s.display();
    }
}   

Output:

ENTER NO OF VERTEX==> 
ENTER NO OF EDGE==> 
ENTER THE EDGE V1-V2 
ENTER THE EDGE COST==> 
ENTER THE EDGE V1-V2 
ENTER THE EDGE COST==> 
SHORTEST PATH

0    999     
999    0     
THE NUMBER OF NEIGHBOUR VERTEX==>0 
THE NUMBER OF NON-NEIGHBOUR VERTEX==>2 
THE NUMBER OF NEIGHBOUR VERTEX==>0 
THE NUMBER OF NON-NEIGHBOUR VERTEX==>2 
SHORTEST PATH

0    999     
999    0  

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