Linked lists have a pointer to the next element (in case of a singly linked list) and a pointer to the previous element as well (in case of a doubly linked list). Hence it becomes easier to implement insertion sort for a linked list. Let us explore all about Insertion sort in this t...
* Definition for singly-linked list. * public class ListNode { * int val; * ListNode next; * ListNode(int x) { val = x; } * } */ class Solution public ListNode insertionSortList(ListNode head) { ListNode dummy = new ListNode(0); // 这个dummy的作用是,把head开头的链表一个个的插入...