Merge two sorted linked lists and return it as a new list. The new list should be made by splicing together the nodes of the first two lists. Example: Input:1->2->4, 1->3->4Output:1->1->2->3->4->4 因为没有空间要求,所以想到ListNode*head = new ListNode(INT_MIN);重新定义一...
1. Merge sort 实际上是利用了分治的思想,找中点,然后两边分别排序,最后将它们merge起来即可。 找中点的程序可以参考[LeetCode] 876. Middle of the Linked List_Easy tag: Linked List。note: 注意找中点的时候,如果是偶数,应该选第一个 merge left, right的程序可以参考[LeetCode] 21. Merge Two Sorted Li...
//leetcode.cn/problems/middle-of-the-linked-list/ """ class Solution1: def mergeTwoLists(self, list1: Optional[ListNode], list2: Optional[ListNode]) -> Optional[ListNode]: # 迭代法 dummy = cur = ListNode(0) while list1 and list2: # 当有为空的时候可以停止了把剩下的接上去就行。
我的github连接:https://github.com/princewen/leetcode_python 21. Merge Two Sorted Lists Merge Two Sorted Lists 很简单的链表拼接题,但是要注意两个地方 1、返回值要返回head.next 2、无需判断循环后哪个不为空,or返回第一个为真的值 # Definition for singly-linked list. # class ListNode(object): #...
LeetCode之Linked List题目汇总 Add Two Numbers Convert Sorted List to Binary Search Tree Delete Node in a Linked List Insertion Sort List Intersection of Two Linked Lists Linked List Cycle Linked List Cycle II Merge Two Sorted Lists Palindrome Linked List ...
Leetcode 92题反转链表 II(Reverse Linked List II) 题目链接 https://leetcode-cn.com/problems/reverse-linked-list-ii/ 题目描述 反转从位置 m 到 n 的链表。请使用一趟扫描完成反转。 说明: 1 ≤ m ≤ n ≤ 链表长度。 示例: 输入: 1->2->3->4->5->NULL, m = 2, n = 4 输出: 1->4...
Can you solve this real interview question? Reverse Linked List - Given the head of a singly linked list, reverse the list, and return the reversed list. Example 1: [https://assets.leetcode.com/uploads/2021/02/19/rev1ex1.jpg] Input: head = [1,2,3,
LeetCode Top 100 Liked Questions 114. Flatten Binary Tree to Linked List (Java版; Medium) 题目描述 Given a binary tree, flatten it to a linked list in-place. For example, given the following tree: 1 / \ 2 5 / \ \ 3 4 6
输入:intersectVal = 2, listA = [0,9,1,2,4], listB = [3,2,4], skipA = 3, skipB = 1输出:Intersected at '2'解释:相交节点的值为 2 (注意,如果两个链表相交则不能为 0)。 从各自的表头开始算起,链表 A 为 [0,9,1,2,4],链表 B 为 [3,2,4]。在 A 中,相交节点前有 3 个...
Given a binary tree, flatten it to a linked list in-place. For example, Given 代码语言:javascript 代码运行次数:0 运行 AI代码解释 1/\25/\ \346 The flattened tree should look like: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 ...