leetcode-83-删除排序链表中的重复元素
//注意每次取值或取next，都需要检查当前节点是否为空
class Solution {
public:
ListNode* deleteDuplicates(ListNode* head) {
ListNode* curNode = head;
while (curNode != NULL) {
if (curNode->next != NULL && curNode->val == curNode->next->val) {
ListNode* delNode = curNode->next;
curNode->next = delNode->next;
delete delNode;
}
else {
curNode = curNode->next;
}
}
return head;
}
};