TAILIEUCHUNG - Lecture Algorithms and data structures (CSC112) - Chapter 12

Lecture Algorithms and data structures: Chapter 12 - Prefix Infix Postfix. The main contents of the chapter consist of the following: Introduction, stack in our life, stack operations, stack implementation, stack using array, stack using linked list, use of stack. | Review Introduction Stack in our life Stack Operations Stack Implementation Stack Using Array Stack Using Linked List Use of Stack Polish Notation Prefix Infix Postfix Precedence of Operators Converting Infix to Postfix Evaluating Postfix Prefix, Infix, Postfix Two other ways of writing the expression are + A B prefix (Polish Notation) A B + postfix (Reverse Polish Notation) The prefixes “pre” and “post” refer to the position of the operator with respect to the two operands. A primary concern for this course is efficiency. You might believe that faster computers make it unnecessary to be concerned with efficiency. However So we need special training. Prefix, Infix, Postfix Consider the infix expression A + B * C We “know” that multiplication is done before addition. The expression is interpreted as A + ( B * C ) Multiplication has precedence over addition. A primary concern for this course is efficiency. You might believe that faster computers make it unnecessary to be concerned with efficiency. However So we need special training. Prefix, Infix, Postfix Conversion to postfix A + ( B * C ) infix form A primary concern for this course is efficiency. You might believe that faster computers make it unnecessary to be concerned with efficiency. However So we need special training. Prefix, Infix, Postfix Conversion to postfix A + ( B * C ) infix form A + ( B C * ) convert multiplication A primary concern for this course is efficiency. You might believe that faster computers make it unnecessary to be concerned with efficiency. However So we need special training. Prefix, Infix, Postfix Conversion to postfix A + ( B * C ) infix form A + ( B C * ) convert multiplication A ( B C * ) + convert addition A primary concern for this course is efficiency. You might believe that faster computers make it unnecessary to be concerned with efficiency. However So we need special training. Prefix, Infix, Postfix Conversion to .

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