DSA · Theory

Diameter of an N-ary tree

Theory

470/810

Diameter of an N-ary tree

Diameter of an N-ary tree (alt) is a DSA topic. In plain words you use it for folder on disk in a file explorer. Don’t start with a slogan — start with that picture.

Smallest example: left < root < right. Type it, run it, and say what you see. If you can do that from memory, you know Diameter of an N-ary tree (alt).

From the example next to this theory — Diameter of an N-ary tree (alt) — Dry-run [4, 1, 3].

Trap — unbalanced BST becoming a list. Fix that before you talk about advanced DSA.

Viva — what is Diameter of an N-ary tree (alt)? Then show left < root < right. Then name the trap.

Exam tip

What is Diameter of an N-ary tree (alt)? Show this: left < root < right. Trap: unbalanced BST becoming a list.

Example

# Diameter of an N-ary tree
data = [4, 1, 3]
print("start", data)
if data[0] > data[1]:
    data[0], data[1] = data[1], data[0]
print("after one step", data)

Diameter of an N-ary tree (alt) — Dry-run [4, 1, 3]. Say the list after one step.

Short notes

DefDiameter of an N-ary tree (alt) — folder on disk in a file explorer.
Ruleleft < root < right
Trapunbalanced BST becoming a list
Usea file explorer

DSA · Theory

Diameter of an N-ary tree

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Theory

470/810

Diameter of an N-ary tree

Diameter of an N-ary tree (alt) is a DSA topic. In plain words you use it for folder on disk in a file explorer. Don’t start with a slogan — start with that picture.

Smallest example: left < root < right. Type it, run it, and say what you see. If you can do that from memory, you know Diameter of an N-ary tree (alt).

From the example next to this theory — Diameter of an N-ary tree (alt) — Dry-run [4, 1, 3].

Trap — unbalanced BST becoming a list. Fix that before you talk about advanced DSA.

Viva — what is Diameter of an N-ary tree (alt)? Then show left < root < right. Then name the trap.

Exam tip

What is Diameter of an N-ary tree (alt)? Show this: left < root < right. Trap: unbalanced BST becoming a list.

Example

# Diameter of an N-ary tree
data = [4, 1, 3]
print("start", data)
if data[0] > data[1]:
    data[0], data[1] = data[1], data[0]
print("after one step", data)

Diameter of an N-ary tree (alt) — Dry-run [4, 1, 3]. Say the list after one step.

Short notes

DefDiameter of an N-ary tree (alt) — folder on disk in a file explorer.
Ruleleft < root < right
Trapunbalanced BST becoming a list
Usea file explorer

Diameter of an N-ary tree

Example

Short notes

Questions

Diameter of an N-ary tree

Example

Short notes

Questions