Sort a Linked List

Medium Subtopics divide-and-conquer · linked-list · merge-sort · sorting · two-pointers Companies adobe · amazon · bytedance · facebook · google · microsoft Last updated: Aug 2, 2025

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Problem

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

Example 1:

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

Example 2:

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