Q16 LeetCode203 移除链表元素

1.注意头结点是否满足要求

2.注意移动时节点是否为空

 

class Solution {
    public ListNode removeElements(ListNode head, int val) {
        while(head!=null&&head.val==val){
            head=head.next;
        }
      ListNode cur=head;
      
      while (cur != null && cur.next != null) {
            if (cur.next.val == val) {
                cur.next = cur.next.next;
            } else {
                cur = cur.next;
            }
        }
      return head;
    }
}

 

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