Starting Out with C++: Early Objects (9th Edition)
Starting Out with C++: Early Objects (9th Edition)
9th Edition
ISBN: 9780134400242
Author: Tony Gaddis, Judy Walters, Godfrey Muganda
Publisher: PEARSON
Question
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Chapter 19, Problem 17RQE
Program Plan Intro

Binary tree:

  • It is a tree data structure which comes under hierarchical data structure.
  • It is made of nodes that have a left child, right child and a data element.

Tree traversal:

  • There are 3 common methods,
    • Inorder traversal.
    • Preorder traversal.
    • Postorder traversal.
  • In inorder traversal, the left subtree is encountered first, then data node and then the right subtree.
  • In preorder traversal, the data node is encountered first, then left subtree and then the right subtree.
  • In postorder traversal, the left subtree is encountered first, then right subtree and then the data node.

Algorithm for Inorder traversal:

  • Traverse through the leftmost subtree, and then print the element.
  • Then, print the root node.
  • Now, traverse the rightmost subtree, and then print the element.

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