In a binary tree, what does a null left child indicate?
Practice Questions
Q1
In a binary tree, what does a null left child indicate?
The node is a leaf
The node has only a right child
The node has no children
The node is the root
Questions & Step-by-Step Solutions
In a binary tree, what does a null left child indicate?
Step 1: Understand what a binary tree is. A binary tree is a structure where each node can have up to two children: a left child and a right child.
Step 2: Identify what a 'null' left child means. A 'null' left child means that there is no node present on the left side of the current node.
Step 3: Recognize the implications of having a null left child. If the left child is null, it means that the current node does not have a left child.
Step 4: Determine what it means for a node to be a leaf node. A leaf node is a node that has no children at all, meaning both its left and right children are null.
Step 5: Conclude that if a node has a null left child, it could be a leaf node if its right child is also null.
