Fine calculation in LLD - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to calculate the fine amount based on days late.

LLD

fine = [1] * days_late

Drag options to blanks, or click blank then click option'

Adays_late

Btotal_fine

Crate_per_day

Dbase_fine

Attempts:

3 left

💡 Hint

Common Mistakes

Using days_late twice instead of rate_per_day

Using total_fine which is the result, not the rate

The fine is calculated by multiplying the rate per day by the number of days late.

2fill in blank

medium

Complete the code to check if a fine should be applied based on days late.

LLD

if [1] > 0:
    apply_fine = True

Drag options to blanks, or click blank then click option'

Adays_late

Btotal_fine

Crate_per_day

Dfine_amount

Attempts:

3 left

💡 Hint

Common Mistakes

Checking fine_amount instead of days_late

Using rate_per_day in the condition

We apply a fine only if the number of days late is greater than zero.

3fill in blank

hard

Fix the error in the code to correctly calculate the total fine with a maximum cap.

LLD

total_fine = min([1] * days_late, max_fine)

Drag options to blanks, or click blank then click option'

Atotal_fine

Brate_per_day

Cmax_fine

Ddays_late

Attempts:

3 left

💡 Hint

Common Mistakes

Using total_fine inside its own calculation

Using max_fine as multiplier instead of cap

The fine is calculated by multiplying the rate per day by days late, then capped by max_fine.

4fill in blank

hard

Fill both blanks to create a dictionary comprehension that maps each user to their fine if late.

LLD

user_fines = {user: [1] * days for user, days in late_days.items() if days [2] 0}

Drag options to blanks, or click blank then click option'

Arate_per_day

B>

C==

D<

Attempts:

3 left

💡 Hint

Common Mistakes

Using equality instead of greater than in condition

Using wrong variable for multiplication

The fine is calculated by multiplying rate_per_day by days late, only for users with days late greater than zero.

5fill in blank

hard

Fill the blanks to filter users with fines above threshold and create a summary dictionary.

LLD

high_fines = {user: fine for user, fine in user_fines.items() if fine [1] threshold}
summary = {
    'count': len(high_fines),
    'max_fine': max(high_fines.values()) if high_fines else 0,
    'average_fine': sum(high_fines.values()) [2] len(high_fines) if high_fines else 0
}

Drag options to blanks, or click blank then click option'

A>

B//

C/

D+

Attempts:

3 left

💡 Hint

Common Mistakes

Using integer division '//' instead of '/' for average

Using '+' instead of division for average calculation

The code filters fines greater than the threshold, counts them, finds the max fine, and calculates the average by dividing the sum by count.