单链表冒泡排序(优化)

void SortList(PSListNode pHead)
{
                 PSListNode pTailNode = NULL ;
                 PSListNode pNode = NULL ;
                 PSListNode pPreNode = NULL ;
                 if (pHead == NULL)
                {
                                 return;
                }
                 while (pHead != pTailNode)
                {
                                pNode = pHead;
                                 while (pNode->pNext != pTailNode)
                                {
                                                pPreNode = pNode;
                                                pNode = pNode->pNext;
                                                 if (pPreNode->data > pNode->data)
                                                {
                                                                 DataType temp = pPreNode->data;
                                                                pPreNode->data = pNode->data;
                                                                pNode->data = temp;

                                                }
                                }
                                pTailNode = pNode;
                }
}
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