The number of nodes in the list is in the range[0, 5 * 104]. -105<= Node.val <= 105 Follow up:Can you sort the linked list inO(n logn)time andO(1)memory (i.e. constant space)? Accepted 1M Submissions Acceptance Rate FindBorderBarSize
[LeetCode] 148. Sort List Given theheadof a linked list, returnthe list after sorting it in ascending order. Follow up: Can you sort the linked list inO(n logn)time andO(1)memory (i.e. constant space)? Example 1: Input: head = [4,2,1,3] Output: [1,2,3,4] Example 2: Inp...
ListNode*l2 =sortList(mid);returnmerge(l1, l2); } 然后是自底向上的非递归实现(分治思想): 自底向上的方法实现起来有些难度,我使用了两个栈来存储中间链表,这种方法并不好,但我也想不出其他方法了 在leetcode上测试发现比递归方法还要慢12ms,真是一次失败的优化。 //Definition for singly-linked list.st...
技术标签: Leetcode刷题 leetcode 链表 python[Leetcode][Python] 148. Sort List 排序链表题目大意 解题思路 1:归并排序 代码 解题思路 2:借助列表和sort() 代码题目大意题目连接: Given the head of a linked list, return the list after sorting it in ascending order. Follow up: Can you sort the ...
Can you solve this real interview question? Sort List - Given the head of a linked list, return the list after sorting it in ascending order. Example 1: [https://assets.leetcode.com/uploads/2020/09/14/sort_list_1.jpg] Input: head = [4,2,1,3] Outpu
[leetcode] 148. Sort List Description Sort a linked list in O(n log n) time using constant space complexity. Example 1: Input: Output: Example 2: Input: Output: 分析 题目的意思是:常量空间复杂度排序好一个链表。 找到链表中点,(快慢指针的思路),写出merge函数归并两个链表。 代码 参考......
https://leetcode.com/problems/sort-list/ 题目: Sort a linked list in O(n log n) time using constant space complexity. 思路: 用归并排序,难点在递归划分链表中点。本题解答参考了网络答案。 算法: public ListNode sortList(ListNode head) { ...
LeetCode:Sort List Problem: Sort a linked list inO(nlogn) time using constant space complexity. 解题思路: 首先,时间复杂度能达到O(nlgn)的排序算法,常见的有3种:堆排序、归并排序和高速排序, 而对于链表,用堆排序显然不太可能,所以,我们可用归并或者是快排.因为合并两个链表,仅仅用...
package leetcode /** * Definition for singly-linked list. * type ListNode struct { * Val int * Next *ListNode * } */ func insertionSortList(head *ListNode) *ListNode { if head == nil { return head } newHead := &ListNode{Val: 0, Next: nil} // 这里初始化不要直接指向 head,为了...
Leetcode 147 Insertion Sort List的解题思路是什么? 如何用Python实现Leetcode 147 Insertion Sort List? Leetcode 147 Insertion Sort List的时间复杂度是多少? Sort a linked list using insertion sort. 对链表插入排序,没啥好说的。 代码语言:javascript 代码运行次数:0 运行 AI代码解释 /** * Definition ...