LeetCode之Sort List 1.问题描述 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(...
first.next=null;//这里容易出现问题,提前将后置节点归null ListNode head1=sortList(head); ListNode head2=sortList(tmp);returnmergeList(head1, head2); }publicstaticvoidmain(String[] args){ LinkedSort linkedSort=newLinkedSort(); ListNode head1=newListNode(9); head1.next=newListNode(3); head1...
https://leetcode.com/problems/insertion-sort-list/ 题目: Sort a linked list using insertion sort. 思路: 头插法。用头结点可以简化插入链表时候的操作,因为要考虑插入链表中间和表头两种情况,插入表头时,head就要更新,还要判断pre指针是否为空 算法: public ListNode insertSortList(ListNode head, ListNode t)...
Leetcode: Insertion Sort List 题目:Sort a linked list using insertion sort. 即使用插入排序对链表进行排序。 思路分析: 插入排序思想见《排序(一):直接插入排序 》 C++参考代码: /** * Definition for singly-linked list. * struct ListNode { * int val; * ListNode *next; * ListNode(int x) ...
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...
Leetcode - Sort List My code: /** * Definition for singly-linked list. * public class ListNode { * int val; * ListNode next; * ListNode(int x) { val = x; } * } */publicclassSolution{publicListNodesortList(ListNodehead){if(head==null)returnnull;intcount=0;ListNodetemp=head;while(...
Given the head of a singly linked list, sort the list using insertion sort, and return the sorted list's head. The steps of the insertion sort algorithm: Insertion sort iterates, consuming one input element each repetition and growing a sorted output list. At each iteration, insertion sort ...
使用QuickSort快速排序算法,排序一个链表。 下面是quickSort,因为quickSort算法的最坏情况是O(n*n), 所以如果做LeetCode上的Sort List这道题目,会遇上最坏情况超时的,不过这是个很好的算法,故此贴出来。 参考网站: http://www.geeksforgeeks.org/quicksort-on-singly-linked-list/ ...
:pencil2: 算法相关知识储备 LeetCode with Python :books:. Contribute to wangchaowei/leetCode development by creating an account on GitHub.
[LeetCode] Insertion Sort List 简介:Well, life gets difficult pretty soon whenever the same operation on array is transferred to linked list. Well, life gets difficult pretty soon whenever the same operation on array is transferred to linked list....