Split strategies (equal, exact, percentage) in LLD - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is the 'equal split' strategy in payment splitting?

Equal split means dividing the total amount evenly among all participants, regardless of individual shares or preferences.

beginner

Explain the 'exact split' strategy.

Exact split means each participant pays a specific, predefined amount. The sum of all exact amounts equals the total bill.

beginner

How does the 'percentage split' strategy work?

Percentage split divides the total amount based on each participant's percentage share. The sum of all percentages must be 100%.

intermediate

What is a key challenge when implementing 'exact split' in a system?

Ensuring the sum of all exact amounts matches the total bill exactly, handling rounding errors and validation.

intermediate

Why might 'percentage split' be preferred over 'equal split'?

Percentage split allows flexibility for participants to pay according to their consumption or agreement, unlike equal split which assumes everyone pays the same.

Which split strategy divides the total amount evenly among all participants?

A Exact split

B Percentage split

C Equal split

D Random split

Equal split means everyone pays the same amount.

In which split strategy must the sum of all participant amounts exactly match the total bill?

A Exact split

B Equal split

C Percentage split

D Proportional split

Exact split requires predefined amounts that sum to the total.

What must the total of all percentages be in a percentage split?

A Less than 100%

B More than 100%

C Any value

D Exactly 100%

Percentages must add up to 100% to cover the whole amount.

Which split strategy offers the most flexibility for different payment shares?

A Equal split

B Percentage split

C Fixed split

D Exact split

Percentage split allows different shares based on percentages.

What is a common issue when implementing exact split in software?

A Rounding errors causing mismatch with total

B Participants paying too little

C Participants paying too much

D Ignoring participant preferences

Rounding errors can cause the sum of exact amounts to differ from the total.

Describe the differences between equal, exact, and percentage split strategies.

Think about how the total amount is divided among participants.

What are key considerations when designing a system to support multiple split strategies?

Consider what can go wrong and how to keep the system reliable.