用迴圈鏈表解決Josehus問題

#include <iostream>
using namespace std;

struct CirLinkNode
{
 int data;
 struct CirLinkNode *link;
 CirLinkNode(CirLinkNode *next = NULL):link(next) { }
 CirLinkNode(int d, CirLinkNode *next = NULL):data(d), link(next) { }
};

class CircList
{
public:
 CircList() { head = NULL; }
 void create();
 CirLinkNode* getHead() { return head; }
private:
 CirLinkNode* head;
};

void CircList::create()
{
 CirLinkNode *rear = NULL, *temp;
 int n;
 cin>>n;
 while(n != 0)
 {
  temp = new CirLinkNode(n);
  if (head == NULL)
  {
   head = temp;
   rear = temp;
  }else
  {
   rear->link = temp;
   rear = temp;
  }
  cin>>n;
 }
 rear->link = head;
}

void Josephus(CircList& js, int n, int m)
{
 int i, j;
 CirLinkNode* pre = NULL;
 CirLinkNode* current = js.getHead();
 for (i = 0; i <n -1; i++)
 {
  for (j = 1; j < m; j++)
  {
   pre = current;
   current = current->link;
  }
  cout<<(current->data)<<"  ";
  pre->link = current->link;
  delete current;
  current = pre->link;
 }
}

int main()
{
 CircList cir;
 cir.create();
 Josephus(cir, 8, 3);
}