DSA · Theory

Level order Traversal in a Binary Tree

Theory

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Level order Traversal in a Binary Tree

Level order Traversal in a Binary Tree is a DSA idea you prove with folder on disk, not with a slogan.

Keep Level order Traversal in a Binary Tree small. Kabir should finish folder on disk in a few lines, not a 40-line dump.

Skip Level order Traversal in a Binary Tree and unbalanced BST becoming a list shows up in a file explorer.

Kabir ships Level order Traversal in a Binary Tree in a file explorer. That is the use case worth saying.

If folder on disk breaks under Level order Traversal in a Binary Tree, check unbalanced BST becoming a list first.

After Level order Traversal in a Binary Tree, Kabir should still remember unbalanced BST becoming a list.

One breath for Level order Traversal in a Binary Tree, then folder on disk, then unbalanced BST becoming a list. Sit down.

Exam tip

For Level order Traversal in a 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))

Level order Traversal in a Binary Tree — inorder walks left → node → right (sorted order for a BST).

Short notes

DefLevel order Traversal in a Binary Tree — Kabir uses it for folder on disk in a file explorer.
RuleLevel order Traversal in a Binary Tree → left < root < right.
RememberLevel order Traversal in a Binary Tree + time vs memory (a file explorer).
UseLevel order Traversal in a Binary Tree in a file explorer (folder on disk).
TrapLevel order Traversal in a Binary Tree — unbalanced BST becoming a list.
ExLevel order Traversal in 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))

Level order Traversal in a Binary Tree

Example

Short notes

Questions

Level order Traversal in a Binary Tree

Example

Short notes

Questions