In java, implement a weighted graph class from the Graph.java. Graph.java uses integer value for storing an edge. Instead of using integer value for storing edges, create an Edge class that holds information of edge. Edge class has following attributes (not limited to):

Vertex v1, v2 int edgeID int edgeWeight

Change the adjacency list to hold the vertex and edge weight.

Write a driver program, which reads input files mediumGraph.txt, LargeG.txt and XtraLargeG.txt and display the weighted graphs by printing adjacency list.

Graph.java

import java.io.BufferedReader; import java.io.File; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.IOException; import java.io.InputStreamReader; import java.util.ArrayList; import java.util.LinkedList; import java.util.StringTokenizer;

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public class Graph { public int V; public int E; public LinkedList[] adj; public Graph() { V = 0; E = 0; } public Graph(BufferedReader reader) throws IOException { String line; line = reader.readLine(); V = Integer.parseInt(line); line = reader.readLine(); E = Integer.parseInt(line); adj = new LinkedList[V]; for (int v = 0; v < V; v++) { adj[v] = new LinkedList(); } while ((line = reader.readLine()) != null) { int tempV1, tempV2; StringTokenizer st = new StringTokenizer(line, " "); tempV1 = Integer.parseInt(st.nextToken()); tempV2 = Integer.parseInt(st.nextToken()); addEdge(tempV1, tempV2); } } public void addEdge(int v, int w) { } public String tostring() { String s = new String(); s = "There are "+V+" vertices and "+E+" edges "; for(int i=0;i

mediumG.txt

250 1273 244 246 239 240 238 245 235 238 233 240 232 248 231 248 229 249 228 241 226 231 223 242 223 249 222 225 220 247 219 221 218 224 218 227 217 232 216 232 214 219 214 221 213 235 213 238 212 214 212 219 212 221 212 244 211 222

largeG.txt

1000000 7586063 999812 999997 999592 999782 999499 999881 999213 999297 999082 999896 999067 999159 999063 999354 999037 999626 998991 999808 998856 999431 998602 998726 998601 998719 998494 999657 998475 999232 998456 999256 998375 999945 998353 999790 998347 999348 998299 998335 998292 998433 998261 999240 998244 999924 998013 999598 998008 999192 997936 998069 997905 999016 997877 999937 997847 998290

xtraLargeG.txt

1000000 7586063 999812 999997 999592 999782 999499 999881 999213 999297 999082 999896 999067 999159 999063 999354 999037 999626 998991 999808 998856 999431 998602 998726 998601 998719 998494 999657 998475 999232 998456 999256 998375 999945 998353 999790 998347 999348 998299 998335 998292 998433 998261 999240 998244 999924 998013 999598 998008 999192 997936 998069 997905 999016 997877 999937 997847 998290