Which traversal method of a binary tree is commonly used in expression evaluatio
Practice Questions
Q1
Which traversal method of a binary tree is commonly used in expression evaluation?
In-order traversal
Pre-order traversal
Post-order traversal
Level-order traversal
Questions & Step-by-Step Solutions
Which traversal method of a binary tree is commonly used in expression evaluation?
Step 1: Understand what a binary tree is. A binary tree is a data structure where each node has at most two children.
Step 2: Learn about expression trees. An expression tree is a type of binary tree used to represent expressions, where operators are stored in the nodes and operands are stored in the leaves.
Step 3: Know the different traversal methods for binary trees. The common methods are pre-order, in-order, and post-order.
Step 4: Focus on pre-order traversal. In pre-order traversal, you visit the root node first, then the left subtree, and finally the right subtree.
Step 5: Understand why pre-order is used for expression evaluation. In pre-order traversal, the operator (root) is processed before its operands (children), which matches how expressions are evaluated.
