problem
206. Reverse Linked List
code
Iteration
/**
* 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 = NULL;
ListNode* cur = head;
while(cur)
{
ListNode* tmp = cur->next;
cur->next = pre;
pre = cur;
cur = tmp;
}
return pre;
}
};
View Code
参考
1. Leetcode_Reverse Linked List;
完