DSA · Theory

Move the First Fibonacci Number to the end of a Linked List

Theory

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Move the First Fibonacci Number to the end of a Linked List

If you can teach Move the First Fibonacci Number to the end of a Linked List using a ticket queue node, you know it. If you only know the heading, you don’t.

Keep Move the First Fibonacci Number to the end of a Linked List small. Meera should finish a ticket queue node in a few lines, not a 40-line dump.

Skip Move the First Fibonacci Number to the end of a Linked List and losing the next pointer on delete shows up in a counter.

Meera ships Move the First Fibonacci Number to the end of a Linked List in a counter. That is the use case worth saying.

Move the First Fibonacci Number to the end of a Linked List miss: losing the next pointer on delete. Fix it before you talk about advanced DSA.

Move the First Fibonacci Number to the end of a Linked List is not a lonely heading. Meera ties it to a ticket queue node.

Close Move the First Fibonacci Number to the end of a Linked List with: “If I skip it, a ticket queue node goes wrong like this: losing the next pointer on delete.”

Diagram

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

Exam tip

Board: a ticket queue node. Dry-run Move the First Fibonacci Number to the end of a 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

Move the First Fibonacci Number to the end of a Linked List — a linked list chains nodes with next pointers instead of contiguous indexes.

Short notes

DefMove the First Fibonacci Number to the end of a Linked List — Meera uses it for a ticket queue node in a counter.
RuleMove the First Fibonacci Number to the end of a Linked List → head → next → ….
RememberMove the First Fibonacci Number to the end of a Linked List + time vs memory (a counter).
UseMove the First Fibonacci Number to the end of a Linked List in a counter (a ticket queue node).
TrapMove the First Fibonacci Number to the end of a Linked List — losing the next pointer on delete.
ExMove the First Fibonacci Number to the end of 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

Move the First Fibonacci Number to the end of a Linked List

Example

Short notes

Questions

Move the First Fibonacci Number to the end of a Linked List

Example

Short notes

Questions