l1.next = mergeTwoLists2(l1.next, l2);returnl1; }else{ l2.next = mergeTwoLists2(l1, l2.next);returnl2; } } 05 小结 此题虽然不难,但是需要先将题目意思读懂,并且知道链表是怎么存数据的,这样才能更好解题。为了更好理解,下面贴上全部代码。 packageleetcode;importjava.util.ArrayList;importjava...
参考链接:https://leetcode.com/problems/merge-two-sorted-lists/discuss/9814/3-lines-c-12ms-and-c-4ms。参考代码如下: class Solution { public: ListNode* mergeTwoLists(ListNode* l1, ListNode* l2) { if (!l1 || (l2 && l1->val > l2->val)) swap(l1, l2); if (l1) l1->next = ...
Link:https://leetcode.com/problems/merge-two-sorted-lists/ 双指针 O(N) 比较两个链表头,把小的拿出来放到新的链表中 # Definition for singly-linked list.# class ListNode:# def __init__(self, val=0, next=None):# self.val = val# self.next = nextclassSolution:defmergeTwoLists(self,l1:...
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->4 Output: 1->1->2->3->4->4 1. 2. # Definition for singly-linked list. # class ListNode(object)...
MergeTwoSortedLists 一种方法是迭代,一种方法是递归; code /** * Definition for singly-linked list. * struct ListNode { * int val; * ListNode *next; * ListNode(int x) : val(x), next(NULL) {} * }; */ class Solution { ...
mergeTwoLists(l1.next, l2) return l1 但最标准的解法我认为还是迭代。通过创建一个哨兵节点,在依次比对两个链表的数值大小后设置哨兵节点的next指针,来创建新的排序后链表。最后遍历结束所有链表后返回哨兵节点的头结点即可。 class Solution: def mergeTwoLists(self, l1: ListNode, l2: ListNode) -> ListNode...
constintN=1000+5;intn,par[N];intfind(intx){returnpar[x]==x?x:(par[x]=find(par[x]));}voidunit(intx,inty){x=find(x);y=find(y);if(x==y)return;par[x]=y;}boolsame(intx,inty){returnfind(x)==find(y);}class Solution{public:vector<vector<string>>accountsMerge(vector<vector...
Given two sorted integer arrays nums1 and nums2, merge nums2 into nums1 as one sorted array. Note: The number of elements initialized in nums1 and nums2 are m and n respectively. You may assume that nums1 has enough space (size that is greater or equal to m + n) to hold additiona...
Can you solve this real interview question? Merge k Sorted Lists - You are given an array of k linked-lists lists, each linked-list is sorted in ascending order. Merge all the linked-lists into one sorted linked-list and return it. Example 1: Inpu
(https://github.com/kamyu104/LeetCode#math) * [Two Pointers](https://github.com/kamyu104/LeetCode#two-pointers) * [Sort](https://github.com/kamyu104/LeetCode#sort) * [Recursion](https://github.com/kamyu104/LeetCode#recursion) * [Binary Search](https://github.com/kamyu104/LeetCode#...