[LeetCode] 203. Remove Linked List Elements 解题思路
Remove all elements from a linked list of integers that have value val.
Example
Given: 1 --> 2 --> 6 --> 3 --> 4 --> 5 --> 6, val = 6
Return: 1 --> 2 --> 3 --> 4 --> 5
问题:给定列表表头,删除列表中值为 val 的元素。
比较方便的方法是,每次比较 p->next->val 与 val ,当相等时跳过 p->next 即可: p->next = p->next->next;
1 ListNode* removeElements(ListNode* head, int val) { 2 3 ListNode* p = new ListNode(0); 4 p->next = head; 5 6 ListNode* pMake = p; 7 8 while(p->next != NULL){ 9 if (p->next->val == val){ 10 p->next = p->next->next; 11 }else{ 12 p = p->next; 13 } 14 } 15 head = pMake->next; 16 17 return head; 18 }