Linked ListEasy

9. Find Length of Linked List

Counts each node along the pointer chain until null is reached.

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

Goldman SachsAdobeSalesforce

Reference implementation (Python)

def get_length(head):
    count = 0
    curr = head
    while curr:
        count += 1
        curr = curr.next
    return count

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<iframe src="/embed/ll-length" 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 9. Find Length of Linked List?

9. Find Length of Linked List runs in O(n) time and O(1) auxiliary space.

Is the 9. Find Length of 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 9. Find Length of Linked List in interviews?

9. Find Length of Linked List shows up in interviews at Goldman Sachs, Adobe, Salesforce.

How does the 3D visualization of 9. Find Length of 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.