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Rotate Operation in Linked List

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Rotate Operation in Linked List

Rotate Operation in Linked List sits in a counter. Vikram’s job is a ticket queue node. Write that first.

Rotate Operation in Linked List on the board: head → next → …. Then say what a ticket queue node looks like after.

Without Rotate Operation in Linked List, a counter gets messy and a ticket queue node is hard to trust.

Use Rotate Operation in Linked List when a ticket queue node must stay clear. If a simpler DSA step works, use that instead.

Rotate Operation in Linked List miss — losing the next pointer on delete. Fix it before you talk about advanced DSA.

After Rotate Operation in Linked List, Vikram should still remember losing the next pointer on delete.

One breath for Rotate Operation in Linked List, then a ticket queue node, then losing the next pointer on delete. Sit down.

Diagram

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

Exam tip

Board: a ticket queue node. Dry-run Rotate Operation in Linked List. Name the trap: losing the next pointer on delete.

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

Rotate Operation in Linked List — a linked list chains nodes with next pointers instead of contiguous indexes.

Short notes

DefRotate Operation in Linked List — Vikram uses it for a ticket queue node in a counter.
RuleRotate Operation in Linked List → head → next → ….
RememberRotate Operation in Linked List + a dry-run table (a counter).
UseRotate Operation in Linked List in a counter (a ticket queue node).
TrapRotate Operation in Linked List — losing the next pointer on delete.
ExRotate Operation in 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

Rotate Operation in Linked List

Example

Short notes

Questions

Rotate Operation in Linked List

Example

Short notes

Questions