Invert Binary Tree – Part 1

The video tutorial introduces binary trees, explaining their structure and the concept of nodes. It then delves into the problem of inverting a binary tree, using recursion to swap left and right nodes. The tutorial provides a step-by-step guide on implementing this inversion, highlighting the importance of recursion and base cases. The video concludes with a coding demonstration, showcasing the practical application of the discussed concepts.

What is the primary task discussed in the lecture regarding binary trees?

• Deleting nodes from a binary tree

• Inverting a binary tree

• Balancing a binary tree

• Constructing a new binary tree

In a binary tree, what is each element referred to as?

• Root

• Leaf

• Branch

• Node

What is a key concept used in binary trees to perform repeated tasks?

• Iteration

• Recursion

• Looping

• Branching

What is the purpose of a base case in recursion?

• To end the recursion

• To repeat the recursion

• To start the recursion

• To skip the recursion

What is the result of inverting a binary tree?

• A balanced tree

• A mirrored tree

• A complete tree

• A sorted tree

Which approach is NOT mentioned as a way to tackle the binary tree inversion problem?

• Converting to a list

• Using iteration

• Constructing a new tree

• Using recursion

What is the first step in the coding solution for inverting a binary tree?

• Delete the root node

• Check for a balanced tree

• Swap the left and right nodes

• Initialize the tree

In the coding solution, what is used to handle the left and right subtrees?

• Recursion

• A loop

• A temporary variable

• A stack

What happens when the root node is 'none' in the recursive function?

• The function throws an error

• The function continues

• The function returns 'none'

• The function swaps nodes

What is the final step in the recursive function for inverting a binary tree?

• Return 'none'

• Return the left subtree

• Return the right subtree

• Return the root