Leetcode#83 Remove Duplicates from Sorted List

原题地址

基本模拟，记得最后把尾节点next置为NULL...

代码：

ListNode *deleteDuplicates(ListNode *head) {
        ListNode *h = NULL;
        ListNode *t = NULL;
        
        while (head) {
            if (!h)
                h = t = head;
            else if (head->val != t->val) {
                t->next = head;
                t = t->next;
            }
            head = head->next;
        }
        if (t)
            t->next = NULL;
        
        return h;
}