[字符串]翻转其中的所有单词

string ReverseSentence(string str) 
{
    int size = str.size();
    
    char *pFirst = &str[0];
    char *pEnd = &str[size - 1];
    
    Reverse(pFirst, pEnd);
    
    pFirst = &str[0];
    pEnd = pFirst;
    
    while(*pFirst != ‘\0‘)
    {
        if(*pFirst == ‘ ‘)
        {
            ++pFirst;
            ++pEnd;
        }
        else if(*pEnd == ‘ ‘ || *pEnd == ‘\0‘)
        {
            Reverse(pFirst, --pEnd);
            pFirst = ++pEnd;
        }
        else
        {
            ++pEnd;
        }
    }//for
    
    return str;
}

void Reverse(char *pBegin, char *pEnd)
{
    if(pBegin == NULL || pEnd == NULL)
    {
        return;
    }
    
    while(pBegin < pEnd)
    {
        char tmp = *pBegin;
        *pBegin = *pEnd;
        *pEnd = tmp;
        
        pBegin++;
        pEnd--;
    }//while
}