Linked List pattern

Reverse Linked List

Given the head of a singly linked list, reverse the list and return the new head. Watch it run step by step, then write your own pseudocode and get it checked by AI.

  • LeetCode 206
  • Easy
  • 2 approaches
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Linked ListLeetCode 206

Easy

From the first idea to the best one

  1. 01 Iterative · three pointers O(n)O(1) space
  2. 02 Recursive O(n)O(n) space
Each approach plays step by step, with its time and space.

What you will learn

  • How to read Reverse Linked List and spot the linked list pattern in it
  • Iterative · three pointers: O(n) time, O(1) space
  • Recursive: O(n) time, O(n) space
  • The pseudocode for each approach, its line lit as the animation runs
  • Practice: write your own pseudocode and get it checked

More Linked List

See Reverse Linked List run, step by step

Sign in and this page opens on the animation, with all 9 Linked List problems beside it.

Sign in to open itSee plans

DSA comes with the all labs plan and every ChaiCode batch.