Need help with these true or false questions. Answers:If you can get from a parent to a child using a reference, then you can get back to the parent using the same reference (i.e. there us an "undirected edge" between a parent and child so you can go from parent to child).Leaves have no children and the root cannot be a leaf.The height of a node is the length of the path from that node to the root.K-ary trees (discussed in class) can be implemented using the "first child, next sibling" method (discussed in the book).A pre-order traversal visits children after processing the node itself.A post-order traversal visits children after processing the node itself.A binary tree has at most 1 child per node (it is binary: 0 or 1 children).Recursion can be used to determine the number of nodes in a tree.Recursion cannot be used to determine the height of a tree (iteration must be used).The textbook provides implementations for pre-, post-, and in-order tree iterators.

leaves have no children and root cannot be a leaf true, as first node is called as ROOT…

Answered: Answers: If you can get from a parent…

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Need help with these true or false questions.

Answers:
If you can get from a parent to a child using a reference, then you can get back to the parent using the same reference (i.e. there us an "undirected edge" between a parent and child so you can go from parent to child).
Leaves have no children and the root cannot be a leaf.
The height of a node is the length of the path from that node to the root.
K-ary trees (discussed in class) can be implemented using the "first child, next sibling" method (discussed in the book).
A pre-order traversal visits children after processing the node itself.
A post-order traversal visits children after processing the node itself.
A binary tree has at most 1 child per node (it is binary: 0 or 1 children).
Recursion can be used to determine the number of nodes in a tree.
Recursion cannot be used to determine the height of a tree (iteration must be used).
The textbook provides implementations for pre-, post-, and in-order tree iterators.

Expert Solution

Step 1

leaves have no children and root cannot be a leaf

true, as first node is called as ROOT node, if root is connected to another node then root node becomes PARENT NODE and CHILD is the connected node. where as leaves the last node of tree, and leaf means no-children, so root is not leaf.

A binary tree has at most 1 children per node

false, where the each node in binary tree will have at most 2 children. parent, child (left, right)

the height of the node is the length of the path from that node to the root

false, height of node is always consider as the length of longest path(downwards) to leaf from node.

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