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Flatten Binary Tree to Linked List

Theory

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Flatten Binary Tree to Linked List

Flatten Binary Tree to Linked List is simple if you keep it on paper. Zara uses it for a ticket queue node in a counter.

Keep Flatten Binary Tree to Linked List small. Zara should finish a ticket queue node in a few lines, not a 40-line dump.

Flatten Binary Tree to Linked List exists so Zara can keep a ticket queue node correct in a counter.

Flatten Binary Tree to Linked List shows up in a counter. Name a ticket queue node, not “a real-world scenario”.

If a ticket queue node breaks under Flatten Binary Tree to Linked List, check losing the next pointer on delete first.

Flatten Binary Tree to Linked List is not a lonely heading. Zara ties it to a ticket queue node.

One breath for Flatten Binary Tree to Linked List, then a ticket queue node, then losing the next pointer on delete. Sit down.

Diagram

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

Exam tip

For Flatten Binary Tree to 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

Flatten Binary Tree to Linked List — a linked list chains nodes with next pointers instead of contiguous indexes.

Short notes

DefFlatten Binary Tree to Linked List — Zara uses it for a ticket queue node in a counter.
RuleFlatten Binary Tree to Linked List → head → next → ….
RememberFlatten Binary Tree to Linked List + time vs memory (a counter).
UseFlatten Binary Tree to Linked List in a counter (a ticket queue node).
TrapFlatten Binary Tree to Linked List — losing the next pointer on delete.
ExFlatten Binary Tree to 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

Flatten Binary Tree to Linked List

Example

Short notes

Questions

Flatten Binary Tree to Linked List

Example

Short notes

Questions