203. Remove Linked List Elements
Remove all elements from a linked list of integers that have value val.
Example:
Input: 1->2->6->3->4->5->6, val = 6 Output: 1->2->3->4->5
思路：
移除制定的节点，需要注意的是，如果移除的是第一个节点，也需要移除。
代码：
java：
代码语言：javascript复制/**
* Definition for singly-linked list.
* public class ListNode {
* int val;
* ListNode next;
* ListNode(int x) { val = x; }
* }
*/
class Solution {
public ListNode removeElements(ListNode head, int val) {
if (head == null) return head;
ListNode dummy = new ListNode(0);
dummy.next = head;
ListNode curr = dummy;
while (curr != null && curr.next != null) {
if (curr.next.val == val) curr.next = curr.next.next;
else curr = curr.next;
}
return dummy.next;
}
}
