Merchant Risk Scoring

Problem Overview

Design a risk scoring system that computes a final risk score for each merchant based on a list of transactions, a parallel list of rules (one rule per transaction), and a list of merchants with their initial base scores. Inputs: 1. transaction_list: List<String>, each entry formatted as "merchant_id,amount,customer_id,hour" 2. rules_list:…

• The rest of the problem statement — full requirements, constraints, and edge cases
• Approach and trade-offs — what passing candidates did, and the mistakes that sink people