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Binary Trees and Search Trees Quiz

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Questions and Answers

What is a leaf node in a tree?

A node that has exactly two children

A node that is the root of the tree

A node that has more than two children

A node that has no children (correct)

What is an ancestor node in a tree?

A node with only one child

The immediate child of the root node

A node with no descendants

Any predecessor node on the path from root to that node (correct)

What are sub-trees in a tree?

The immediate child nodes of the root

Nodes with no children

Nodes with common parent

Trees T1, T2, and T3 if the root node is not NULL (correct)

What is the root node in a tree?

The topmost node in the tree with no parent Signup and view all the answers

What are siblings in a tree?

Nodes with common parent Signup and view all the answers

What is a binary tree?

A binary tree is a tree data structure in which each node has at most two children, referred to as the left child and the right child. Signup and view all the answers

What is a threaded binary tree?

A threaded binary tree is a binary tree in which all the leaf nodes are connected in either in-order or post-order, making it easier to traverse the tree without using recursion or stack. Signup and view all the answers

What is a path in a tree?

A path in a tree is a sequence of consecutive edges that connects nodes in the tree, typically from the root node to a specific node. Signup and view all the answers

What is a leaf node in a tree?

A leaf node in a tree is a node that has no children, meaning it is located at the end of a branch and does not have any further nodes connected to it. Signup and view all the answers

What is an ancestor node in a tree?

An ancestor node in a tree is any predecessor node on the path from the root to a specific node, excluding the root node itself. Signup and view all the answers

Study Notes

Tree Data Structure

A leaf node is a node in a tree that has no children, i.e., it is a terminal node with no further branches.

Node Relationships

An ancestor node is a node that is above a given node in the tree, i.e., it is a parent or a grandparent, etc. of the node.
Sibling nodes are nodes that have the same parent node, i.e., they are at the same level in the tree and are children of the same parent.

Tree Structure

The root node is the topmost node in a tree, i.e., it is the node that has no parent node.

Tree Types

A binary tree is a tree in which each node has at most two children, i.e., a left child and a right child.

Variations

A threaded binary tree is a binary tree in which the empty child pointers of nodes are used to thread the nodes together, i.e., to create a linked list.

A path in a tree is a sequence of nodes that connect from the root node to a particular node, i.e., it is a route through the tree to reach a specific node.

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Description

Test your knowledge on binary trees, including terminology, representations, traversals, and operations, as well as on binary search trees and their applications.