Starting Out with Java: From Control Structures through Data Structures (4th Edition) (What's New in Computer Science)
Starting Out with Java: From Control Structures through Data Structures (4th Edition) (What's New in Computer Science)
4th Edition
ISBN: 9780134787961
Author: Tony Gaddis, Godfrey Muganda
Publisher: PEARSON
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Chapter 21.1, Problem 21.3CP
Program Plan Intro

Preorder traversal:

It process all the nodes of the tree in the following order.

  • First, traverse the root node.
  • Then, traverse all the nodes in the left subtree.
  • Finally, traverse all the nodes in the right subtree.

Algorithm:

Method “preorder” to print the values stored in a binary tree is as follows:

Node preorder(Node bTree)

{

    //Check tree is not empty

    if (tree != null)

    {

        //Print the root node value

        System.out.print(bTree.value + " ");

        //Print value of left subtree

        preorder(bTree.left);

        //Print value of right subtree

        preorder(bTree.right);

    }

}

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Suppose an array is given A = [A, C, E, F, K, L, M, N, Y, Z]   a.  Draw a complete TERNARY tree from array A.b.  Write preorder and postorder traversal for the created complete ternary.c.   Draw the adjacency matrix and adjacency list for the complete ternary tree/graph. [You must consider the tree direction from top to bottom when drawing adjacencymatrix and list]
c. Given 2 Arrays of Inorder and preorder traversal. Inorder sequence: {D B E A F C} Preorder sequence: {A B D E C F} Construct a tree and print the Postorder traversal.
What problems do you encounter when you try to define the concept of an inorder traversal for ternary trees?
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