reverseList(self, head: Optional[ListNode]) -> Optional[ListNode]: if not head: return head p = head q = p.next p.next = None while q: r = q.next q.next = p p = q q = r return p发布于 2024-03-21 10:22・IP 属地北京...
代码:oj测试通过 Runtime: 65 ms 1#Definition for singly-linked list.2#class ListNode:3#def __init__(self, x):4#self.val = x5#self.next = None67classSolution:8#@param head, a ListNode9#@param m, an integer10#@param n, an integer11#@return a ListNode12defreverseBetween(self, head...
(参考视频讲解:Leetcode力扣|206反转链表|递归|reverse linked list_哔哩哔哩_bilibili) # 定义一个链表节点类classListNode:def__init__(self,val=0,next=None):# 初始化函数self.val=val# 节点的值self.next=next# 指向下一个节点的指针# 将给出的数组转换为链表deflinkedlist(list):head=ListNode(list[0]...
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# Definition for singly-linked list. # class ListNode: # def __init__(self, x): # self.val = x # self.next = None class Solution: # @param head, a ListNode # @param m, an integer # @param n, an integer # @return a ListNode def reverseBetween(self, head, m, n): if ...
publicListNodereverseList(ListNode head){ListNodeprev=null;ListNodecurr=head;while(curr !=null) {ListNodenextTemp=curr.next; curr.next = prev; prev = curr; curr = nextTemp; }returnprev; } 二刷,python。 # Definition for singly-linked list.# class ListNode(object):# def __init__(self, ...
def reverseList2(self, head: ListNode) -> ListNode: """ 双指针法 :param head: :return: """ # 空表时直接返空 if head is None: return None # 初始化cur为head cur = head while head.next != None: # 当head的next非空时, 完成局部反转 ...
Reverse Linked List II Problem: Reverse a linked list from position m to n. Do it in one-pass. Note: 1 ≤ m ≤ n ≤ length of list. Example: 题目:逆转m到n位节点顺序,其余部分不变。一次遍历完成。 思路:想哭,明...猜你喜欢LeetCode 92. Reverse Linked List II 问题描述 Reverse a ...
class Solution(object): def reverseList(self, head): """ :type head: ListNode :rtype: ListNode """ p = None while head: tmp = head head = head.next tmp.next = p p = tmp return p 1 2 3 4 5 6 7 8 9 10 11 12 13版权...
"""目标:写一段程序,对链表进行重新排序例如:输入-> L1->L2->L3->...->Ln-1->Ln输出-> L1->Ln->L2->Ln-1..."""Objective: write a program to reorder the linked listFor example:Input - > L1 - > L2 - > L3 -> ... - > ln-1 - > LNOutput - > L1 - > ln - > L2 - ...