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template<class type> void list<type>::delnode(int p)
{
 int k=1;
 listnode<type> *ptr,*t;
 ptr=first;
 while(ptr->next!=NULL&&k!=p)
 {
  ptr=ptr->next;
     k++;
 }
    t=ptr->next;
 cout<<"ÄãÒѾ­½«Êý¾ÝÏî "<<t->data<<"ɾ³ý"<<endl;
 
 ptr->next=ptr->next->next;
 length--;
 delete t;
}
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template<class type> bool list<type>::insert(type t,int p)
{
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