Program for distance vector routing using java

import java.io.*;
class distance_vector
{
public static void main(String arg[])throws Exception
{
int n,src,i,j,k;
String ch;
int a[][]=new int[10][10];
System.out.println("Enter the no. of nodes..");
BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
n=Integer.parseInt(br.readLine());
for(i=1;i<=n;i++)
for(j=1;j<=n;j++)

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