DSA · Theory

Introduction to Heavy Light Decomposition

Theory

472/810

Introduction to Heavy Light Decomposition

Heavy Light Decomposition (introduction to) is a DSA topic. In plain words you use it for marks stored somehow in a viva board. Don’t start with a slogan — start with that picture.

Smallest example: array vs list vs hash — one line each. Type it, run it, and say what you see. If you can do that from memory, you know Heavy Light Decomposition (introduction to).

From the example next to this theory — Introduction to Heavy Light Decomposition: dry-run [4, 1, 3].

Trap — reciting names with no cost. Fix that before you talk about advanced DSA.

Viva: what is Heavy Light Decomposition (introduction to)? Then show array vs list vs hash — one line each. Then name the trap.

Exam tip

What is Heavy Light Decomposition (introduction to)? Show this: array vs list vs hash — one line each. Trap: reciting names with no cost.

Example

# Introduction to Heavy Light Decomposition
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)

Introduction to Heavy Light Decomposition: dry-run [4, 1, 3]. Say the list after one step.

Short notes

DefHeavy Light Decomposition (introduction to) — marks stored somehow in a viva board.
Rulearray vs list vs hash — one line each
Trapreciting names with no cost
Usea viva board

DSA · Theory

Introduction to Heavy Light Decomposition

← All stacks

Theory

472/810

Introduction to Heavy Light Decomposition

Heavy Light Decomposition (introduction to) is a DSA topic. In plain words you use it for marks stored somehow in a viva board. Don’t start with a slogan — start with that picture.

Smallest example: array vs list vs hash — one line each. Type it, run it, and say what you see. If you can do that from memory, you know Heavy Light Decomposition (introduction to).

From the example next to this theory — Introduction to Heavy Light Decomposition: dry-run [4, 1, 3].

Trap — reciting names with no cost. Fix that before you talk about advanced DSA.

Viva: what is Heavy Light Decomposition (introduction to)? Then show array vs list vs hash — one line each. Then name the trap.

Exam tip

What is Heavy Light Decomposition (introduction to)? Show this: array vs list vs hash — one line each. Trap: reciting names with no cost.

Example

# Introduction to Heavy Light Decomposition
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)

Introduction to Heavy Light Decomposition: dry-run [4, 1, 3]. Say the list after one step.

Short notes

DefHeavy Light Decomposition (introduction to) — marks stored somehow in a viva board.
Rulearray vs list vs hash — one line each
Trapreciting names with no cost
Usea viva board

Introduction to Heavy Light Decomposition

Example

Short notes

Questions

Introduction to Heavy Light Decomposition

Example

Short notes

Questions