What is the primary data structure used to implement a queue for level order tra
Practice Questions
Q1
What is the primary data structure used to implement a queue for level order traversal?
Stack
Array
Linked List
Queue
Questions & Step-by-Step Solutions
What is the primary data structure used to implement a queue for level order traversal?
Step 1: Understand what a queue is. A queue is a data structure that follows the First In First Out (FIFO) principle, meaning the first element added is the first one to be removed.
Step 2: Learn about level order traversal. Level order traversal is a way to visit all the nodes in a binary tree level by level, starting from the root.
Step 3: Realize that to perform level order traversal, we need to keep track of the nodes we need to visit next. A queue is perfect for this because it allows us to add nodes to the end and remove nodes from the front.
Step 4: When we start at the root of the binary tree, we add it to the queue. Then, we repeatedly remove the front node from the queue, visit it, and add its children to the back of the queue.
Step 5: Continue this process until the queue is empty, ensuring that we visit all nodes in the correct order.
