147. Insertion Sort ListMedium Topics Companies 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 ...
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) ...
*/classSolution{public:ListNode*insertionSortList(ListNode*head){if(head==NULL||head->next==NULL)returnhead;ListNode*tmp=NULL;ListNode*pre_tmp=NULL;ListNode*dummy=newListNode(0);ListNode*pos=head->next;//这里用pos指向第一待插入排序数据ListNode*pre_pos=head;dummy->next=head;while(pos!=NULL){...
[LeetCode] 147. Insertion Sort List Sort a linked list using insertion sort. Algorithm of Insertion Sort: Insertion sort iterates, consuming one input element each repetition, and growing a sorted output list. At each iteration, insertion sort removes one element from the input data, finds the...
Linked ListSort 分析:把链表分成两部分:排好序的和为排序的,排好序的以NULL结尾,cur插在preInsertion和insertion之间,next保存cur->next. 另外,注意dummy的使用简化了插入头结点的情况。 时间复杂度O(n^2),空间O(1) /** * Definition for singly-linked list. ...