移除链表元素

移除链表元素(难度:简单)

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/**
* 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) {
ListNode dummy = new ListNode(0);
dummy.next = head;

ListNode cur = dummy;

while(cur.next != null){
if(cur.next.val == val){
cur.next = cur.next.next;
} else{
cur = cur.next;
}
}

return dummy.next;

}
}

注:添加虚拟头节点解决头节点是要被删除的情况