双向链表插入排序和冒泡排序

/**
*Author:DTY
*E-Mail:[email protected]
*Date:2015.12.03
**/
#include 
#include 
#include 

using namespace std;

typedef struct DNode{
  int data;
  struct DNode *pre;
  struct DNode *next;  
} DNode,*DList;


DList  createDList() {
    DList l=NULL;
    int data=0;
    int n=0;
    DNode* cur=NULL;
    while(scanf("%d",&data),data!=-1) {
        DNode* tmpDNode = (DNode*)malloc(sizeof(DNode));
        tmpDNode->data = data;
        tmpDNode->next = NULL;
        if(n==0) {
            l=tmpDNode;
            l->pre=NULL;
            cur=l;
            n++;
        }
        else {
            tmpDNode->pre=cur;
            cur->next=tmpDNode;
            cur=tmpDNode;
        } 
    }
    return l;
}

void printDList(const DList& l) {
   DNode* cur=l;
   if(!cur) return;
   printf("%d",cur->data);
   cur=cur->next;
   while(cur) {
     printf(" %d",cur->data);
     cur=cur->next;
   }
   printf("\n");
   return;
}

void insertSort(DList& l) {
  if(l==NULL || l->next==NULL) return;
  DNode* cur = l->next;
  while(cur) {
      DNode* next=cur->next;
      DNode* tmpDNode=cur->pre;
      while(tmpDNode && tmpDNode->data > cur->data) {
          tmpDNode=tmpDNode->pre;
      }
      if(tmpDNode==NULL) {
          cur->pre->next=cur->next;
          if(cur->next!=NULL) cur->next->pre=cur->pre;
          l->pre = cur;
          cur->next=l;
          cur->pre=NULL;
          l=cur;

      }
      else if(tmpDNode->next != cur) {  
          cur->pre->next=cur->next;
          if(cur->next!=NULL) cur->next->pre=cur->pre;
          else {
              cur->pre=tmpDNode;
              cur->next=tmpDNode->next;
              tmpDNode->next->pre=cur;
              tmpDNode->next=cur;
          }
       }
       cur=next;
  }
  return; 
}

void bubbleSort(DList& l) {
    if(l==NULL || l->next==NULL) return;
    DNode* tail = l;
    while(tail->next) {
        tail=tail->next;
    }
    int unsorted=1;
    while(unsorted && tail!=l) {
       unsorted=0;
       DNode* front=l;
       while(front!=tail) {
          if(front->data > front->next->data) {
               int t=front->data;
               front->data=front->next->data;
               front->next->data=t;
               unsorted=1;
          }
          front = front->next;
       }
       tail = tail->pre;
    }
}

int main(int argc, char* agv[]) {
    while(DList l = createDList()) {
      insertSort(l);
      //bubbleSort(l);
      printDList(l);
    }
    return 0;
}


hadoop@dream:~$ cat input 
1 -1
1 2 3 4 5 -1
5 4 3 2 1 -1
3 4 5 1 2 -1
1 1 1 1 1 -1
-1
hadoop@dream:~$ g++ DList.cpp 
hadoop@dream:~$ ./a.out