2095. Delete the Middle Node of a Linked List

https://leetcode.com/problems/delete-the-middle-node-of-a-linked-list/submissions/

Python

class Solution:
    def deleteMiddle(self, head: Optional[ListNode]) -> Optional[ListNode]:
        dummy = ListNode(next=head)
        length = 1

        slow, fast = dummy, head

        while fast.next:
            length += 1
            fast = fast.next
            if length % 2 == 0:
                slow = slow.next

        slow.next = slow.next.next

        return dummy.next