【leetcode】82. 删除排序链表中的重复元素（二）

题目

82. 删除排序链表中的重复元素（二）

题解

# Definition for singly-linked list.
# class ListNode(object):
#     def __init__(self, val=0, next=None):
#         self.val = val
#         self.next = next
class Solution(object):def deleteDuplicates(self, head):""":type head: Optional[ListNode]:rtype: Optional[ListNode]"""dummy = ListNode(next=head)cur = dummywhile cur.next and cur.next.next:val = cur.next.valif cur.next.next.val == val:while cur.next and cur.next.val == val:cur.next = cur.next.nextelse:cur = cur.nextreturn dummy.next