Bank Fraud Detection in Transaction Chains
Bank Fraud Detection in Transaction Chains
HardArrays50% accepted
HDFC Bank fraud team flags patterns: 5+ consecutive transactions totaling > ₹500,000 within 6 hours. Given transaction amounts and timestamps, identify all fraud windows.
Approach
Given transaction amounts and timestamps, find subarrays of 5+ transactions with sum > threshold
Input
amounts=[50000,75000,60000,80000,100000], threshold=500000
Output
0
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