Linked ListMedium

5. Delete from Beginning

Advances the head pointer to head.next, detaching the first node in O(1) time.

Time O(1) Space O(1)

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

Asked in interviews at

NvidiaIntelQualcomm

Reference implementation (Python)

def delete_beginning(head):
    if not head:
        return None
    new_head = head.next
    head.next = None
    return new_head

Embed this visualization

Drop a live, looping 5. Delete from Beginning canvas into a blog post or course page.

<iframe src="/embed/ll-delete-beginning" 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 5. Delete from Beginning?

5. Delete from Beginning runs in O(1) time and O(1) auxiliary space.

Is the 5. Delete from Beginning 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 5. Delete from Beginning in interviews?

5. Delete from Beginning shows up in interviews at Nvidia, Intel, Qualcomm.

How does the 3D visualization of 5. Delete from Beginning 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.