LLD - Design — Splitwise (Expense Sharing)
Which data structure is most suitable to store transactions for a balance calculation algorithm?
Which data structure is most suitable to store transactions for a balance calculation algorithm?
easy📝 Conceptual Q2 of 15
Step-by-Step Solution
Solution:
Step 1: Identify transaction storage needs
Transactions are usually stored in a sequence to process them in order.Step 2: Choose the best data structure
An array or list allows ordered storage and easy iteration, ideal for transactions.Final Answer:
Array or list -> Option AQuick Check:
Transaction storage = Array or list [OK]
Quick Trick: Use lists for ordered transaction storage [OK]
Common Mistakes:
- Using complex structures like graphs unnecessarily
- Choosing stack which is LIFO, not suitable for ordered transactions
- Confusing trees with simple lists
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