DSA · Theory

Right View of Binary Tree

← All stacks

Theory

289/810

Right View of Binary Tree

Right View of Binary Tree is a DSA idea you prove with folder on disk, not with a slogan.

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

Without Right View of Binary Tree, a file explorer gets messy and folder on disk is hard to trust.

Use Right View of Binary Tree when folder on disk must stay clear. If a simpler DSA step works, use that instead.

Right View of Binary Tree trap — unbalanced BST becoming a list. Farhan loses marks for that every viva.

After Right View of Binary Tree, Farhan should still remember unbalanced BST becoming a list.

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

Exam tip

For Right View of Binary Tree: definition + a file explorer + one failure.

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))

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

Short notes

DefRight View of Binary Tree — Farhan uses it for folder on disk in a file explorer.
RuleRight View of Binary Tree → left < root < right.
RememberRight View of Binary Tree + Big-O (a file explorer).
UseRight View of Binary Tree in a file explorer (folder on disk).
TrapRight View of Binary Tree — unbalanced BST becoming a list.
ExRight View of 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))

Right View of Binary Tree

Example

Short notes

Questions

Right View of Binary Tree

Example

Short notes

Questions