The idea is to use thestack data structureto convert an infix expression to a postfix expression. The stack is used to reverse the order of operators in postfix expression. The stack is also used to hold operators since an operator can’t be added to a postfix expression until both of its...
广义上infix是给user看的,prefix和postfix很大程度上是给编译器看的。具体地,对于单操作符运算,其实用的是prefix(比如取非),当然常见的prefix/postfix就是++、--,但是python中没有这个操作符。 有用 回复 查看全部 1 个回答 推荐问题 字节的 trae AI IDE 不支持类似 vscode 的 ssh remote 远程开发怎么办? 尝...
It's actually quite common to have a function call pass one parameter, where the parameter is calculated using infix notation. Thus, there's a rule to simplify this common case (the prefix {} rule). So factorial{n - 1} maps to factorial({n - 1}) which maps to (factorial (- n 1...
postfix_tokens = infix_to_postfix(parse(infix_tokens) Now, let's start analysing the large methodinfix_to_postfix. First of all, wecouldapply the same trick as we did forREGEXto speed up the lookup forOPERATORS. That's going to make your code a bit more efficient. It's a tad lar...