删除链表重复元素

https://leetcode-cn.com/problems/remove-duplicates-from-sorted-list/
一样，与之前作业一样的思路

class Solution:
    def deleteDuplicates(self, head: ListNode) -> ListNode:
        if head==None:return head
        rst=head#慢指针
        cur=head.next#快指针
        while cur:#当快指针不为None时
            if cur and head.val==cur.val:
                head.next=cur.next#head.next本来是指向cur的，为了实现删除，改为指向cur.next
                cur=cur.next#cur指针向后移
            else:
                head=cur#当不满足删除条件时，一起向后移
                cur=cur.next
        return rst

删除元素链接：https://blog.youkuaiyun.com/AliceRainly/article/details/104399090