LeetCode 148. Sort List – 链表（Linked List）系列题19

Given the head of a linked list, return the list after sorting it in ascending order.
Example 1:

Input: head = [4,2,1,3]
Output: [1,2,3,4]

Example 2:

Input: head = [-1,5,3,4,0]
Output: [-1,0,3,4,5]

Example 3:
Input: head = []
Output: []

Constraints:
The number of nodes in the list is in the range [0, 5 * 104].-105 <= Node.val <= 105 Follow up: Can you sort the linked list in O(n logn) time and O(1) memory (i.e. constant space)? 这题还是要求对链表做排序，不像147. Insertion S

LeetCode 148. Sort List – 链表（Linked List）系列题19最先出现在Python成神之路。