字符串的全排列

void Permutation(char *pstr,char *pBegin)
{
if (*pBegin=='\0')
{
cout<<pstr<<endl;
}
else
{
for (char *pCh=pBegin;*pCh!='\0';pCh++)
{
char temp=*pCh;
*pCh=*pBegin;
*pBegin=temp;

Permutation(pstr,pBegin+1);

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

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