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Êý×Ö±í´ïʽÇóÖµ³ÌÐò (c/c++)

Ò»¸ö¿ØÖÆÌ¨ÏµÄÊý×Ö±í´ïʽÇóÖµ³ÌÐò (c/c++)
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#include <stdio.h>
#include <string>
#include <iostream>
#include <stdlib.h>
#include <vector>
#include <stack>
using namespace std;
//ÉèÖÃÔËËã·ûÓÅÏȼ¶µÄËã·¨
int Priority(const string opera) // ÔËËã·ûÓÅÏȼ¶
{
    if(opera=="+"||opera=="-")
 {
  return (1);
 }
 else if(opera=="*"||opera=="/")
 {
  return (2);
 }
 else
 {
  return (0);
 }
}
void MiddlefixToPostfix(vector<string> &ivec1,vector<string> &ivec2)
//ÖÐ׺±í´ïʽµ½ºó׺±í´ïʽµÄת»»Ëã·¨,ivec2Öдæ·ÅµÄÊÇÖÐ׺±í´ïʽ£¬½«Æäת»»Îªºó׺±í´ïʽÐÎʽ´æ·Åµ½ivec2ÖС£
{
 //¶¨ÒåÒ»¸ö´æ·Å²Ù×÷·ûµÄÕ»¶ÔÏó¡£
    stack<string> operatorstk; 
 
 for(vector<string>::size_type i=0;i!=ivec2.size();++i)
 {
        if(ivec2[i]=="(")
  {
   operatorstk.push(ivec2[i]);
  }
  else if(ivec2[i]=="+"||ivec2[i]=="-"||ivec2[i]=="*"||ivec2[i]=="/")
  {
   if(operatorstk.empty())
   {
    operatorstk.push(ivec2[i]);
   }
   else
   {
    if(Priority(ivec2[i])<=Priority(operatorstk.top()))
    {
        while( operatorstk.empty()==false && operatorstk.top()!="(" )
     {
                        ivec1.push_back(operatorstk.top());
      operatorstk.pop();
     }
     operatorstk.push(ivec2[i]);
    }
    else
    {


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