Linked ListMedium

4. Insert at Specific Position

Traverses to index pos-1, splices the new node in-between: new_node.next = curr.next, curr.next = new_node.

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

OracleCiscoPayPal

Reference implementation (Python)

def insert_at_position(head, val, pos):
    new_node = ListNode(val)
    curr = head
    for _ in range(pos - 1):
        curr = curr.next
    new_node.next = curr.next
    curr.next = new_node
    return head

Embed this visualization

Drop a live, looping 4. Insert at Specific Position canvas into a blog post or course page.

<iframe src="/embed/ll-insert-position" 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 4. Insert at Specific Position?

4. Insert at Specific Position runs in O(n) time and O(1) auxiliary space.

Is the 4. Insert at Specific Position 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 4. Insert at Specific Position in interviews?

4. Insert at Specific Position shows up in interviews at Oracle, Cisco, PayPal.

How does the 3D visualization of 4. Insert at Specific Position 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.