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Remove the loop in a Linked List

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Remove the loop in a Linked List

Remove the loop in a Linked List is a DSA idea you prove with a ticket queue node, not with a slogan.

Do Remove the loop in a Linked List once by hand. head → next → …. Change one input. Say the new result out loud.

Skip Remove the loop in a Linked List and losing the next pointer on delete shows up in a counter.

Arun ships Remove the loop in a Linked List in a counter. That is the use case worth saying.

Remove the loop in a Linked List trap — losing the next pointer on delete. Arun loses marks for that every viva.

Remove the loop in a Linked List is not a lonely heading. Arun ties it to a ticket queue node.

Viva for Remove the loop in a Linked List: what it is → head → next → … → the mistake (losing the next pointer on delete).

Diagram

  [10] → [20] → [30] → /
   head              tail

Exam tip

For Remove the loop in a Linked List: definition + a counter + one failure.

Example

class Node:
    def __init__(self, val, next=None):
        self.val = val
        self.next = next

head = Node(1, Node(2, Node(3)))
cur = head
while cur:
    print(cur.val, end=" -> " if cur.next else "\n")
    cur = cur.next

Remove the loop in a Linked List — a linked list chains nodes with next pointers instead of contiguous indexes.

Short notes

DefRemove the loop in a Linked List — Arun uses it for a ticket queue node in a counter.
RuleRemove the loop in a Linked List → head → next → ….
RememberRemove the loop in a Linked List + time vs memory (a counter).
UseRemove the loop in a Linked List in a counter (a ticket queue node).
TrapRemove the loop in a Linked List — losing the next pointer on delete.
ExRemove the loop in a Linked List → a ticket queue node.

class Node: def __init__(self, val, next=None): self.val = val self.next = next head = Node(1, Node(2, Node(3))) cur = head while cur: print(cur.val, end=" -> " if cur.next else "\n") cur = cur.next

Remove the loop in a Linked List

Example

Short notes

Questions

Remove the loop in a Linked List

Example

Short notes

Questions