Linked ListEasyLeetCode #206

10. Reverse a Linked List ⭐

Reverses pointer direction in-place using three pointers (prev, curr, next).

Time O(n) Space O(1)

Live loop — open the studio to scrub, add your own array, or race it in Battle Arena.

Asked in interviews at

AmazonAppleGoogleMicrosoft

Reference implementation (Python)

def reverse_linked_list(head):
    prev = None
    curr = head
    while curr:
        next_node = curr.next
        curr.next = prev
        prev = curr
        curr = next_node
    return prev

Embed this visualization

Drop a live, looping 10. Reverse a Linked List ⭐ canvas into a blog post or course page.

<iframe src="/embed/reverse-linked-list" width="100%" height="380" style="border:1px solid #e6e8ec;border-radius:14px" loading="lazy" title="3D algorithm visualization by CodeWithMunnaX"></iframe>

Frequently asked

What is the time and space complexity of 10. Reverse a Linked List ⭐?

10. Reverse a Linked List ⭐ runs in O(n) time and O(1) auxiliary space.

Is the 10. Reverse a Linked List ⭐ visualizer free?

The core 3D visualizer, Web Audio chimes and step intuition are free. A one-time ₹49 Pro Pass unlocks advanced algorithms, large custom arrays, Battle Arena and reel export.

Which companies ask 10. Reverse a Linked List ⭐ in interviews?

10. Reverse a Linked List ⭐ shows up in interviews at Amazon, Apple, Google, Microsoft.

How does the 3D visualization of 10. Reverse a Linked List ⭐ work?

Each array value becomes a 3D pillar whose height maps to its value. Comparisons glow amber, swaps flash red, and settled elements lock green while a floating pointer badge tracks the active index — synchronized line-by-line with the Python code.