在 O(1)时间内删除链表结点 链接到标题 class ListNode(object): def __init__(self, x=None): self.val = x self.next = None def __del__(self): self.val = None self.next = None class Solution(object): def delete_list(self, list_head, to_delete): if not list_head or not to_delete: return False if to_delete.next != None: ……