DSA · Theory

Dictionary Data Structure

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Theory

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Dictionary Data Structure

Don’t start Dictionary Data Structure with jargon. Start with name → phone. That is the whole point.

For Dictionary Data Structure, time vs memory is in play. Don’t blame it until you have traced name → phone.

Without Dictionary Data Structure, a diary gets messy and name → phone is hard to trust.

Dictionary Data Structure shows up in a diary. Name name → phone, not “a real-world scenario”.

Dictionary Data Structure trap — bad hash → pile-up. Vikram loses marks for that every viva.

Dictionary Data Structure is not a lonely heading. Vikram ties it to name → phone.

Viva for Dictionary Data Structure — what it is → key % size + collision plan → the mistake (bad hash → pile-up).

Exam tip

Say Dictionary Data Structure in one breath, then key % size + collision plan, then bad hash → pile-up.

Example

# Dictionary Data Structure
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)

Dictionary Data Structure: dry-run [4, 1, 3]. Say the list after one step.

Short notes

DefDictionary Data Structure — Vikram uses it for name → phone in a diary.
RuleDictionary Data Structure → key % size + collision plan.
RememberDictionary Data Structure + time vs memory (a diary).
UseDictionary Data Structure in a diary (name → phone).
TrapDictionary Data Structure — bad hash → pile-up.
ExDictionary Data Structure → name → phone.

DSA · Theory

Dictionary Data Structure

← All stacks

Theory

163/810

Dictionary Data Structure

Don’t start Dictionary Data Structure with jargon. Start with name → phone. That is the whole point.

For Dictionary Data Structure, time vs memory is in play. Don’t blame it until you have traced name → phone.

Without Dictionary Data Structure, a diary gets messy and name → phone is hard to trust.

Dictionary Data Structure shows up in a diary. Name name → phone, not “a real-world scenario”.

Dictionary Data Structure trap — bad hash → pile-up. Vikram loses marks for that every viva.

Dictionary Data Structure is not a lonely heading. Vikram ties it to name → phone.

Viva for Dictionary Data Structure — what it is → key % size + collision plan → the mistake (bad hash → pile-up).

Exam tip

Say Dictionary Data Structure in one breath, then key % size + collision plan, then bad hash → pile-up.

Example

# Dictionary Data Structure
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)

Dictionary Data Structure: dry-run [4, 1, 3]. Say the list after one step.

Short notes

DefDictionary Data Structure — Vikram uses it for name → phone in a diary.
RuleDictionary Data Structure → key % size + collision plan.
RememberDictionary Data Structure + time vs memory (a diary).
UseDictionary Data Structure in a diary (name → phone).
TrapDictionary Data Structure — bad hash → pile-up.
ExDictionary Data Structure → name → phone.

Dictionary Data Structure

Example

Short notes

Questions

Dictionary Data Structure

Example

Short notes

Questions