Linked ListMedium

14. Remove Cycle

Locates the last node in the cycle pointing back to cycle start and breaks the connection (curr.next = None).

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 remove_cycle(head):
    slow = fast = head
    while fast and fast.next:
        slow, fast = slow.next, fast.next.next
        if slow == fast: break
    p1, p2 = head, slow
    while p1.next != p2.next:
        p1, p2 = p1.next, p2.next
    p2.next = None  # Sever the cycle
    return head

Embed this visualization

Drop a live, looping 14. Remove Cycle canvas into a blog post or course page.

<iframe src="/embed/remove-cycle" 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 14. Remove Cycle?

14. Remove Cycle runs in O(n) time and O(1) auxiliary space.

Is the 14. Remove Cycle 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 14. Remove Cycle in interviews?

14. Remove Cycle shows up in interviews at Goldman Sachs, Adobe, Salesforce.

How does the 3D visualization of 14. Remove Cycle 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.