Sort a linked list in O(n log n) time using constant space complexity. 2.翻译 1 在固定的空间复杂度中使用O(nlog n)的时间复杂度进行链表的排序。 3.思路分析 提起排序,我们脑海中会迅速出现各种排序算法:冒泡排序、快速排序、简单排序、堆排序、直接插入排序、希尔排序(递减增量排序)、直接选择排序、堆...
java代码: 1/**2* Definition for singly-linked list.3* class ListNode {4* int val;5* ListNode next;6* ListNode(int x) {7* val = x;8* next = null;9* }10* }11*/12publicclassSolution {13publicListNode sortList(ListNode head) {14if(head==null||head.next==null)returnhead;15ListN...
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
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) { if(head==null||head.next==null) return head; ListNode...
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...
This method takes two sorted arrays (left and right) and merges them into a single sorted array. Initialization: An empty list sorted_array is created to store the merged result. Two pointers i and j are initialized to 0, pointing to the current elements of the left and right arrays, res...
classSolution:defheightChecker(self,heights:List[int])->int:z=0fork,vinenumerate(sorted(heights)):ifv!=heights[k]:z+=1returnz 977. 有序数组的平方 给定一个按非递减顺序排序的整数数组A,返回每个数字的平方组成的新数组,要求也按非递减顺序排序。
Leetcode-Sort List Description Sort a linked list in O(n log n) time using constant space complexity. Explain 看题目要求,第一个是链表,第二个是时间复杂度为O(n log n),空间复杂度为O (1)。排序算法中说到这个时间复杂度的话,肯定也就会想到快排和归并排序。归并排序如果用数组实现的话,是做不到...
Sort a linked list in O(n log n) time using constant space complexity. Example 1: Input: 4->2->1->3 Output: 1->2->3->4 Example 2: Input: -1->5->3->4->0 Output: -1->0->3->4->5 解题思路:回想排序算法,线性对数时间复杂度的有:快速排序,堆排序,归并排序,前两种暂时没实现...
用Python 时间也算不短了,但总感觉自己在用写 C++ 代码的思维写 Python,没有真正用到其作为脚本语言的优势。之前刷 LeetCode 时,自己的 Python 代码总是很长,很像披着 Python 外衣的 C++ 代码(放在这里( https://github.com/xuelangZF/LeetCode ),不断重构中)。