Data Structures and Algorithms The Complete Masterclass - Trees - Part 1

The video tutorial introduces nonlinear data structures, focusing on trees and graphs. It explains the basic structure and terminology of trees, including nodes, roots, parents, children, and siblings. The tutorial covers tree hierarchy, relationships, traversal, and the concept of leaf nodes and paths. Real-life applications of tree structures are discussed, such as in web development and chess. The importance of parent-child relationships and direction in trees is emphasized. An exercise is provided to reinforce learning.

What distinguishes nonlinear data structures like trees and graphs from linear ones?

• They have a hierarchical structure.

• They are always sorted.

• They use arrays for storage.

• They do not allow duplicate elements.

In a tree structure, what is the topmost node called?

• Root node

• Child node

• Leaf node

• Parent node

Which of the following is true about the relationship between nodes in a tree?

• A node can have multiple parents.

• A node must have exactly two children.

• A node can have multiple children.

• A node cannot have any children.

What is a leaf node in a tree?

• A node with multiple parents

• A node with no children

• A node with two children

• A node with one child

How is a path defined in a tree structure?

• A sequence of nodes with the same child

• A sequence of nodes with the same parent

• A sequence of nodes from the root to a leaf

• A sequence of nodes from a leaf to the root

What is a subtree in a tree structure?

• A node with only one child

• A node with multiple parents

• A smaller tree within a larger tree

• A node with no children

In a tree, what is the relationship between nodes with the same parent called?

• Ancestors

• Siblings

• Cousins

• Descendants

Which real-life example can be represented using a tree structure?

• A linear list of tasks

• A family genealogy

• A single webpage

• A sorted array

In the context of a webpage, what does the DOM represent?

• A graph data structure

• A tree data structure

• A linear data structure

• A circular data structure

What is the significance of direction in a tree structure?

• It enables circular references.

• It allows traversal in any direction.

• It defines the hierarchy from root to leaf.

• It allows nodes to have multiple parents.