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

char* ReverseSentence(char *pData){    if(pData == NULL)        return NULL;    char *pBegin = pData;    char *pEnd = pData;    while(*pEnd != '\0')        pEnd ++;    pEnd--;    // 翻转整个句子    Reverse(pBegin, pEnd);    // 翻转句子中的每个单词    pBegin = pEnd = pData;    while(*pBegin != '\0')    {        if(*pBegin == ' ')        {            pBegin ++;            pEnd ++;        }        else if(*pEnd == ' ' || *pEnd == '\0')        {            Reverse(pBegin, --pEnd);            pBegin = ++pEnd;        }        else        {            pEnd ++;        }    }    return pData;}

char* LeftRotateString(char* pStr, int n){    if(pStr != NULL)    {        int nLength = static_cast
   
    (strlen(pStr));        if(nLength > 0 && n > 0 && n < nLength)        {            char* pFirstStart = pStr;            char* pFirstEnd = pStr + n - 1;            char* pSecondStart = pStr + n;            char* pSecondEnd = pStr + nLength - 1;            // 翻转字符串的前面n个字符            Reverse(pFirstStart, pFirstEnd);            // 翻转字符串的后面部分            Reverse(pSecondStart, pSecondEnd);            // 翻转整个字符串            Reverse(pFirstStart, pSecondEnd);        }    }    return pStr;}