链表链式结构的写法

 1 struct ListNode
 2 {
 3     int data;
 4     ListNode* next;
 5 };
 6 void AddToTail(ListNode** pHead,int v){
 7     ListNode* pNew = new ListNode();
 8     pNew->data = v;
 9     pNew->next = NULL;
10     if(*pHead == NULL)
11         *pHead = pNew;
12     else{
13         ListNode* pNode = *pHead;
14         while(pNode->next!=NULL)
15             pNode = pNode->next;
16         pNode->next = pNew;
17     }
18 }
19 void RemoveNode(ListNode** pHead,int v)
20 {
21     if(pHead == NULL || *pHead == NULL)
22         return;
23     ListNode* pToBeDeleted = NULL;
24     if((*pHead)->data == v){
25         pToBeDeleted = *pHead;
26         *pHead = (*pHead)->next;
27     }else{
28         ListNode* pNode = *pHead;
29         while(pNode->next !=NULL && pNode->next->data !=v)
30             pNode = pNode->next;
31         if(pNode->next!=NULL && pNode->next->data ==v){
32             pToBeDeleted = pNode->next;
33             pNode->next = pNode->next->next;
34         }
35     }
36     if(pToBeDeleted!=NULL){
37         delete pToBeDeleted;
38         pToBeDeleted = NULL;
39     }
40 }