Cinte's Leetcode Record
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剑指 Offer 24. 反转链表

Posted on Edited on In Disqus:
Symbols count in article: 377 Reading time ≈ 1 mins.

剑指 Offer 24. 反转链表

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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* reverseList(ListNode* head) {
        ListNode* pre = nullptr;
        while(head)
        {
            auto next = head->next;
            head->next = pre;
            pre = head;
            head = next;
        }
        return pre;
    }
};