什么是从缀更改为后缀的好处？ [英] what is benefits for changing from infix to postfix?

问题描述

今天我读的书。据介绍算法有关从缀到后缀chaning。什么是好处？ 先谢谢了。

I read book today. It introduced algorithm about chaning from infix to postfix.. What is benefits? Thanks in advance.

推荐答案

好了一个，你可以很容易地评估一个后缀EX pression在一次扫描中从左至右一叠的帮助下，不同评估中缀EX pressions。第二，没有必要括号和precedence规则等的后缀前pression概念

Well for one, you can easily evaluate a postfix expression in a single scan from left to right with the help of a stack, unlike evaluating infix expressions. and second, there is no need of the concept of parentheses and precedence rules etc. in a postfix expression.

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