Which of the following traversal methods can be implemented using a stack?
Practice Questions
Q1
Which of the following traversal methods can be implemented using a stack?
In-order
Pre-order
Post-order
All of the above
Questions & Step-by-Step Solutions
Which of the following traversal methods can be implemented using a stack?
Step 1: Understand what traversal methods are. Traversal methods are ways to visit all the nodes in a data structure, like a tree or graph.
Step 2: Identify the three common traversal methods: Pre-order, In-order, and Post-order.
Step 3: Learn about stacks. A stack is a data structure that follows the Last In, First Out (LIFO) principle.
Step 4: Realize that you can use a stack to keep track of nodes you need to visit next during traversal.
Step 5: For Pre-order traversal, you can push the root node onto the stack, then visit it, and push its children onto the stack.
Step 6: For In-order traversal, you can use a stack to keep track of nodes while going left until you reach a leaf, then visit nodes and go right.
Step 7: For Post-order traversal, you can use a stack to ensure you visit children before their parent nodes.
Step 8: Conclude that all three traversal methods can be implemented using a stack, either by manually using a stack or by using the call stack in recursive functions.
