DSA · Theory

Bottom View of a Binary Tree

← All stacks

Theory

301/810

Bottom View of a Binary Tree

Meera only reaches for Bottom View of a Binary Tree when folder on disk has to stay correct in a file explorer.

Bottom View of a Binary Tree order — meaning → left < root < right → one limit. Dumping ten features helps nobody.

Skip Bottom View of a Binary Tree and unbalanced BST becoming a list shows up in a file explorer.

Bottom View of a Binary Tree shows up in a file explorer. Name folder on disk, not “a real-world scenario”.

If folder on disk breaks under Bottom View of a Binary Tree, check unbalanced BST becoming a list first.

Place Bottom View of a Binary Tree next to nearby DSA work — left < root < right is the link.

Viva for Bottom View of a Binary Tree — what it is → left < root < right → the mistake (unbalanced BST becoming a list).

Exam tip

Board: folder on disk. Dry-run Bottom View of a Binary Tree. Name the trap: 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))

Bottom View of a Binary Tree — inorder walks left → node → right (sorted order for a BST).

Short notes

DefBottom View of a Binary Tree — Meera uses it for folder on disk in a file explorer.
RuleBottom View of a Binary Tree → left < root < right.
RememberBottom View of a Binary Tree + time vs memory (a file explorer).
UseBottom View of a Binary Tree in a file explorer (folder on disk).
TrapBottom View of a Binary Tree — unbalanced BST becoming a list.
ExBottom View of a Binary 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))

Bottom View of a Binary Tree

Example

Short notes

Questions

Bottom View of a Binary Tree

Example

Short notes

Questions