学步园

//my_strstr  查找
//    psrc  = "abc"
//    pdest = "34a567ab1cdddab"

char *strstr(char *psrc, char *pdest)
{
    int iSrc = 0;
    int iDest = 0;
    char *pRet = NULL;
   
    for (iDest = 0; pdest[iDest] != '\0'; iDest++)
    {
        bool bIsOK = true;
        for (iSrc = 0; psrc[iSrc] != '\0'; iSrc++)
        {
            if (pdest[iDest + iSrc] != psrc[iSrc])
            {
                bIsOK = false;
                break;
            }
        }
        if (bIsOK)
        {
            pRet = pdest[iDest];
            break;
        }
    }
    return pRet;
}

char *strstr(char *psrc, char *pdest)
{
    char *pSrcRead = psrc;
    char *pDestRead = pdest;
    char *pRet = NULL;

    bool bIsCmping = false;
    int iMove = 0;
   
    for (; *pSrcRead != '\0'; )
    {
        if (*pSrcRead != *(pDestRead + iMove))
        {
            if (bIsCmping)
            {
                pSrcRead = psrc;
                iMove = 0;
                bIsCmping = false;
                pDestRead++;
            }
        }
        else
        {
            pSrcRead++;
        //    pDestRead++;
            iMove++;
            bIsCmping = true;
        }
    }
    pRet = pDestRead;
   
    return pRet;
}

// 简单举例
// wq  Every[]
--------
让每个人分别来与wq进行比较

0: Every[0] =？ wq
1: Every[1] =？ wq

for (i = 0; i < MAX; i++)
{
   if ( Every[i] == wq )
   {
        return true;
   }
   else
   {
        return false;
   }   
}

------
让wq跑去与每个人进行比较

0: wq  =?  Every[0]
1: wq  =?  Every[1]

for (i = 0; i < MAX; i++)
{
   if ( wq == Every[i] )
   {
        return true;
   }
   else
   {
        return false;
   }   
}