Linked ListMedium

16. Intersection Point of Two Lists ⭐

Two pointers traverse both lists; when one reaches the end, it switches to the other list's head to equalize paths.

Time O(n + m) 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 get_intersection(headA, headB):
    pA, pB = headA, headB
    while pA != pB:
        pA = pA.next if pA else headB
        pB = pB.next if pB else headA
    return pA

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Drop a live, looping 16. Intersection Point of Two Lists ⭐ canvas into a blog post or course page.

<iframe src="/embed/intersection-point" 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 16. Intersection Point of Two Lists ⭐?

16. Intersection Point of Two Lists ⭐ runs in O(n + m) time and O(1) auxiliary space.

Is the 16. Intersection Point of Two Lists ⭐ 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 16. Intersection Point of Two Lists ⭐ in interviews?

16. Intersection Point of Two Lists ⭐ shows up in interviews at Oracle, Cisco, PayPal.

How does the 3D visualization of 16. Intersection Point of Two Lists ⭐ 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.