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Find the Largest Perfect Binary Tree in a Given Tree

Theory

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Find the Largest Perfect Binary Tree in a Given Tree

Find the Largest Perfect Binary Tree in a Given Tree is simple if you keep it on paper. Meera uses it for folder on disk in a file explorer.

Do Find the Largest Perfect Binary Tree in a Given Tree once by hand. left < root < right. Change one input. Say the new result out loud.

Without Find the Largest Perfect Binary Tree in a Given Tree, a file explorer gets messy and folder on disk is hard to trust.

Meera ships Find the Largest Perfect Binary Tree in a Given Tree in a file explorer. That is the use case worth saying.

Find the Largest Perfect Binary Tree in a Given Tree trap: unbalanced BST becoming a list. Meera loses marks for that every viva.

After Find the Largest Perfect Binary Tree in a Given Tree, Meera should still remember unbalanced BST becoming a list.

Close Find the Largest Perfect Binary Tree in a Given Tree with: “If I skip it, folder on disk goes wrong like this: unbalanced BST becoming a list.”

Exam tip

Say Find the Largest Perfect Binary Tree in a Given Tree in one breath, then left < root < right, then unbalanced BST becoming a list.

Example

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

def inorder(n):
    if not n:
        return []
    return inorder(n.left) + [n.val] + inorder(n.right)

root = Node(2, Node(1), Node(3))
print(inorder(root))

Find the Largest Perfect Binary Tree in a Given Tree — inorder walks left → node → right (sorted order for a BST).

Short notes

DefFind the Largest Perfect Binary Tree in a Given Tree — Meera uses it for folder on disk in a file explorer.
RuleFind the Largest Perfect Binary Tree in a Given Tree → left < root < right.
RememberFind the Largest Perfect Binary Tree in a Given Tree + Big-O (a file explorer).
UseFind the Largest Perfect Binary Tree in a Given Tree in a file explorer (folder on disk).
TrapFind the Largest Perfect Binary Tree in a Given Tree — unbalanced BST becoming a list.
ExFind the Largest Perfect Binary Tree in a Given Tree → folder on disk.

class Node: def __init__(self, val, left=None, right=None): self.val, self.left, self.right = val, left, right def inorder(n): if not n: return [] return inorder(n.left) + [n.val] + inorder(n.right) root = Node(2, Node(1), Node(3)) print(inorder(root))

Find the Largest Perfect Binary Tree in a Given Tree

Example

Short notes

Questions

Find the Largest Perfect Binary Tree in a Given Tree

Example

Short notes

Questions