DSA · Theory

Print Binary Tree in 2-Dimensions

Theory

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Print Binary Tree in 2-Dimensions

Print Binary Tree in 2-Dimensions is a DSA idea you prove with folder on disk, not with a slogan.

Print Binary Tree in 2-Dimensions order — meaning → left < root < right → one limit. Dumping ten features helps nobody.

Without Print Binary Tree in 2-Dimensions, a file explorer gets messy and folder on disk is hard to trust.

Use Print Binary Tree in 2-Dimensions when folder on disk must stay clear. If a simpler DSA step works, use that instead.

Don’t do this with Print Binary Tree in 2-Dimensions: unbalanced BST becoming a list. Interviewers spot it in ten seconds.

Place Print Binary Tree in 2-Dimensions next to nearby DSA work — left < root < right is the link.

One breath for Print Binary Tree in 2-Dimensions, then folder on disk, then unbalanced BST becoming a list. Sit down.

Exam tip

For Print Binary Tree in 2-Dimensions: 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))

Print Binary Tree in 2-Dimensions — inorder walks left → node → right (sorted order for a BST).

Short notes

DefPrint Binary Tree in 2-Dimensions — Dev uses it for folder on disk in a file explorer.
RulePrint Binary Tree in 2-Dimensions → left < root < right.
RememberPrint Binary Tree in 2-Dimensions + time vs memory (a file explorer).
UsePrint Binary Tree in 2-Dimensions in a file explorer (folder on disk).
TrapPrint Binary Tree in 2-Dimensions — unbalanced BST becoming a list.
ExPrint Binary Tree in 2-Dimensions → 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))

Print Binary Tree in 2-Dimensions

Example

Short notes

Questions

Print Binary Tree in 2-Dimensions

Example

Short notes

Questions