React Native. Python Design Patterns. Python Pillow. Python Turtle. Verbal Ability. Interview Questions. Company Questions. Artificial Intelligence. Cloud Computing. Data Science. Angular 7. Machine Learning. Data Structures. Infix, postfix, and prefix notations are three different but equivalent notations of writing algebraic expressions.
But before learning about prefix and postfix notations, let us first see what an infix notation is. We all are familiar with the infix notation of writing algebraic expressions. While writing an arithmetic expression using infix notation, the operator is placed in between the operands. Although it is easy for us to write expressions using infix notation, c omputers find it difficult to parse as the computer needs a lot of information to evaluate the expression. Information is needed about operator precedence and associativity rules, and brackets which override these rules.
So, computers work more efficiently with expressions written using prefix and postfix notations. In infix notation we write the first operand, then we write the operator and then we write the second operator. In postfix notation, we write the first operand, followed by the second operand and then we write the operator.
There are two advantages of using a postfix notation over an infix notation. These are. It included infix, postfix and prefix methods to represent an expression. The infix method is the conventional method to represent arithmetic expressions since it is better analyzed by the computers.
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