【刷题-LeetCode】147 Insertion Sort List

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【leetcode刷题笔记】Insertion Sort List

Sort a linked list using insertion sort. 题解:实现链表的插入排序. 要注意的地方就是,处理链表插入的时候尽量往当前游标的后面插入,而不要往前面插入,后者非常麻烦.所以每次利用kepeler.next.val和head.val比较大小,而不是kepeler.val和head.val比较大小,因为如果用后者,要把head指向的节点插入到kepeler指向的节点的前面,如果kepeler指向的节点是头结点,就更麻烦了. 代码如下: /** * Definiti…

[LeetCode] 147. Insertion Sort List 链表插入排序

Sort a linked list using insertion sort. A graphical example of insertion sort. The partial sorted list (black) initially contains only the first element in the list.With each iteration one element (red) is removed from the input data and inserted in…

Java for LeetCode 147 Insertion Sort List

Sort a linked list using insertion sort. 解题思路: 插入排序,JAVA实现如下: public ListNode insertionSortList(ListNode head) { if(head==null||head.next==null) return head; ListNode root=new ListNode(Integer.MIN_VALUE); root.next=head; head=head.next; root.next.nex…

leetcode 147. Insertion Sort List ----- java

Sort a linked list using insertion sort. 插入排序. /** * Definition for singly-linked list. * public class ListNode { * int val; * ListNode next; * ListNode(int x) { val = x; } * } */ public class Solution { public ListNode insertionSortList(ListNode hea…

[LeetCode] 147. Insertion Sort List 解题思路

Sort a linked list using insertion sort. 问题:实现单向链表的插入排序. 这是比较常规的一个算法题目. 从左往右扫列表,每次将指针的下一个元素插入前面已排好序的对应位置中. 需要注意的一定是,列表只能定位下一个元素,不能定位前一个元素,所有,每次插入位置的适合,都是对左右指针的下一个元素进行操作. void insertSort(ListNode* p1, ListNode* p2){ ListNode* next2 = p2->next; p2->ne…

LeetCode 147. Insertion Sort List 链表插入排序 C++/Java

Sort a linked list using insertion sort. A graphical example of insertion sort. The partial sorted list (black) initially contains only the first element in the list.With each iteration one element (red) is removed from the input data and inserted in…