剑指offer——字符串的排列

void Permutation(char* pStr)
{
if(pStr==NULL)
return;
Permutation(pStr,pStr);
}

void Permutation(char* pStr,char* pBegin)
{
if(*pBegin=='\0')
printf("%s\n",pStr);
else
{
char* pCh = pBegin;
while(*pCh!='\0')
{
char temp;
temp = *pCh;
*pCh = *pBegin;
*pBegin = temp;

Permutation(pStr,pBegin++);

temp = *pCh;
*pCh = *pBegin;
*pBegin = temp;
}
}
}