← 返回题库
中级

删除排序链表中的重复元素 II

未完成
中级参考 代码结构已给出，请填写 ____ 处 
class ListNode:
    def __init__(____):
        self.val = val
        self.next = next

def solve():
    def deleteDuplicates(____):
        dummy = ListNode(____, head)
        prev = dummy
        while head:
            if head.next and head.val == head.next.val:
                while head.next and head.val == head.next.val:
                    head = head.next
                prev.next = head.next
            else:
                prev = prev.next
            head = head.next
        return dummy.next
    head = ListNode(____, ListNode(____, ListNode(____, ListNode(____, ListNode(____, ListNode(____, ListNode(____)))))))
    result = deleteDuplicates(____)
    vals = []
    while result:
        vals.append(____)
        result = result.next
    print(____)

示例

输入
solve()
期望输出
[1, 2, 5]
Python 代码 🔒 登录后使用
🔒

登录后即可练习

注册免费账号，在浏览器中直接运行 Python 代码

登录 免费注册