Cinte's Leetcode Record
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876. Middle of the Linked List

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Symbols count in article: 541 Reading time ≈ 1 mins.

876. Middle of the Linked List

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/**
 * Definition for singly-linked list.
 * struct ListNode {
 *     int val;
 *     ListNode *next;
 *     ListNode() : val(0), next(nullptr) {}
 *     ListNode(int x) : val(x), next(nullptr) {}
 *     ListNode(int x, ListNode *next) : val(x), next(next) {}
 * };
 */
class Solution {
public:
    ListNode* middleNode(ListNode* head) {
        ListNode* walker = head;
        ListNode* runner = head;
        while(runner && runner->next)
        {
            walker = walker->next;
            runner = runner->next->next;
        }
        return walker;
    }
};