The document introduces the chapter on trees which covers basic tree terminology and concepts, binary trees, and general trees. It discusses understanding and using tree terminology, recognizing binary tree attributes, performing depth-first and breadth-first traversals on trees, parsing expressions using binary trees, designing and implementing Huffman trees, and understanding the basic use and processing of general trees. The chapter also covers properties of and traversals on binary trees, using trees for expression parsing and Huffman coding, insertions and deletions in general trees, and converting a general tree to a binary tree.

1. Chapter 6
Introduction to Trees
Objectives
Upon completion you will be able to:
• Understand and use basic tree terminology and concepts
• Recognize and define the basic attributes of a binary tree
• Process trees using depth-first and breadth-first traversals
• Parse expressions using a binary tree
• Design and implement Huffman trees
• Understand the basic use and processing of general trees
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2. 6-1 Basic Tree Concepts
We begin the Chapter with a discussion of the terminology used
with trees. Once the terminology is understood, we discuss three
user-oriented tree representations: general trees, indented parts
lists, and parenthetical trees.
• Terminology
• User Representation
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9. 6-2 Binary Trees
A binary tree can have no more than two descendents. In this
section we discuss the properties of binary trees, four different
binary tree traversals, and two applications, expression trees and
Huffman Code.
• Properties
• Binary Tree Traversals
• Expression Trees
• Huffman Code
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35. 6-3 General Trees
A general tree can have an unlimited number of descendents. We
discuss three topics in this section: general tree insertions,
deletions, and converting a general tree to a binary tree.
• Insertions into General Trees
• General Tree Deletions
• Changing a General Tree to a Binary Tree
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