字串替換 java/c++

//java

import java.util.*;import java.io.*;public class replace{    public static void main(String args[])   {   Scanner cin=new Scanner(System.in);  while(cin.hasNext())  {String str=cin.nextLine();if(str.charAt(0)=='0') break;str=str.replaceAll("you","we");  System.out.println(str);  }        } }  

#include<iostream>#include<string>using namespace std;int main( ){    string str;    int pos;    while(getline(cin,str))    {      while((pos=str.find("you"))!=-1)        str.replace(pos,3,"we");        cout<<str<<endl;    }    return 0;}

c++強大啊。0ms  ,java用了172ms