diff --git a/work/1/Easy/Linked List/876.middle-of-the-linked-list.py b/work/1/Easy/Linked List/876.middle-of-the-linked-list.py new file mode 100644 index 0000000..ec86e1b --- /dev/null +++ b/work/1/Easy/Linked List/876.middle-of-the-linked-list.py @@ -0,0 +1,50 @@ +""" +876. Middle of the Linked List +Difficulty: Easy +https://leetcode.com/problems/middle-of-the-linked-list/ + +────────────────────────────────────────────────── + +Given the head of a singly linked list, return the middle node of the +linked list. + +If there are two middle nodes, return the second middle node. + + + +Example 1: + +Input: head = [1,2,3,4,5] +Output: [3,4,5] +Explanation: The middle node of the list is node 3. + +Example 2: + +Input: head = [1,2,3,4,5,6] +Output: [4,5,6] +Explanation: Since the list has two middle nodes with values 3 and 4, +we return the second one. + + + +Constraints: + + • The number of nodes in the list is in the range [1, 100]. + + • 1 <= Node.val <= 100 +""" + + +# Definition for singly-linked list. +# class ListNode: +# def __init__(self, val=0, next=None): +# self.val = val +# self.next = next +class Solution: + def middleNode(self, head: ListNode | None) -> ListNode | None: + slow = fast = head + while fast and fast.next: + fast = fast.next.next + slow = slow.next + + return slow