Postfix

• This is parenthesis-less notation that is used internally by most computer operating systems and languages.

• Operand Operand Operator

• e.g. 2 3 +

• Algorithms exist to convert infix to postfix

  • infix: (1 – 2) – ((((4^5)*3)*6)/(7^(2^2)))
  • postfix: 1 2 – 4 5 ^ 3 * 6 * 7 2 2 ^ ^ / -