Cinte's Leetcode Record
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剑指 Offer 22. 链表中倒数第k个节点

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Symbols count in article: 439 Reading time ≈ 1 mins.

剑指 Offer 22. 链表中倒数第k个节点

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/**
 * Definition for singly-linked list.
 * struct ListNode {
 *     int val;
 *     ListNode *next;
 *     ListNode(int x) : val(x), next(NULL) {}
 * };
 */
class Solution {
public:
    ListNode* getKthFromEnd(ListNode* head, int k) {
        ListNode* runner = head, *walker = head;
        for(int i = 0; i < k; ++i)
            runner = runner->next;
        while(runner)
        {
            walker = walker->next;
            runner = runner->next;
        }
        return walker;
    }
};