Introduction to Java Programming and Data Structures  Comprehensive Version (11th Edition)
Introduction to Java Programming and Data Structures Comprehensive Version (11th Edition)
11th Edition
ISBN: 9780134700144
Author: Liang
Publisher: PEARSON
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Chapter 29, Problem 29.11PE
Program Plan Intro

Find shortest paths

Program Plan:

  • Create a package “main”.
    • Add a java class named “Edge” to the package which is used to get the edges from the graph.
    • Add a java class named “Graph” to the package which is used to add and remove vertices, edges.
    • Add a java class named “UnweightedGraph” to the package which is used to store vertices and neighbors.
    • Add a java class named “WeightedGraph” to the package which is used to get the weighted edges and print the edges.
    • Add a java class named “WeightedEdge” to the package which is used to compare edges.
    • Add a java class named “Test” to the package.
      • Import the required packages.
      • Declare the main class.
        • Give the “main ()” method.
          • Get the URL from the user.
          • Open the URL and read the string.
          • Get the number of vertices and store it in the variable “num”.
          • Print the number of vertices.
          • Create an array list.
          • Loop until End of file using “while” condition.
            • Read the line.
            • Split the string.
            • Loop through the length of the triplet.
              • Create an array and add the tokens.
              • Trim the edges and add the edges to the array list.
          • Create an object for the “WeightedGraph”.
          • Print the edges by calling the function “printWeightedEdges ()”.
          • Call the function “getShortestPath ()”.
          • Print the total weight of the minimum spanning tree.
          • Call the function “printPath ()”.

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