Binary expression tree

A **Binary Expression Tree** is a specific type of binary tree used to represent expressions in a way that makes it easy to evaluate or manipulate them. Each internal node of the tree represents an operator, while each leaf node represents an operand (such as a number or variable). ### Structure: - **Internal Nodes**: These nodes contain operators (such as +, -, *, /). - **Leaf Nodes**: These nodes contain operands (such as constants or variables).