Prefix, Infix, and Postfix Notation

demonstrations.wolfram.com The Wolfram Demonstrations Project contains thousands of free interactive visualizations, with new entries added daily. For various arithmetic expressions, this Demonstration displays the binary expression tree as well as the prefix, infix, and postfix notation for the expressions. In contrast to traditional notation, which is essentially infix notation, prefix notation ...Contributed by: Marc Brodie (Wheeling Jesuit University)