Code to evaluate a postfix expression

Given an expression in postfix notation, write code to evalute a mathematical expression given in postfix notation. For Example: Input: 4 2 3 + * […]

Code to convert In-Fix to postfix notation

Given an arithmetic expression in in-fix notation. Write code to convert that algorithm in corresponding post-fix notation. For example: Infix Postfix ------ -------- a+b ab+ […]

infix, prefix & postfix notations (Polish Notations)

What are Infix, Prefix and Postfix notations ?