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
Expert Solution & Answer
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Chapter 21, Problem 1MC
Program Description Answer

A binary tree is a collection of nodes in which each node “has at most two successors”.

Hence, the correct answer is option “D”.

Expert Solution & Answer
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Explanation of Solution

Binary tree:

  • Binary tree is a hierarchical structure to represent the data. The element of the tree is called as a node or item.
    • Here, the branches are used to connect the nodes.
  • Each node may have zero, one, or two children.
  • A node that does not have a superior node is called the root node.
  • The root node is the starting node, and it is the ancestor for all other nodes in the tree.
  • The set of children node in a binary tree form a subtree rooted at that node.
  • A node that does not have a children is called as a leaf node or an end node.

Explanation for incorrect options:

Has no successor:

A binary tree may have zero, one, or two successor node. So, it cannot be predicted that a binary tree has no successor.

Hence, option “A” is wrong.

Has one successor:

A binary tree may have zero, one, or two successor node. So, it cannot be predicted that a binary tree has one successor.

Hence, option “B” is wrong.

Has exactly two successors:

A binary tree may have zero, one, or two successor node. So, it cannot be predicted that a binary tree has exactly two successors.

Hence, option “C” is wrong.

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