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Variant of LeetCode 1169. Invalid Transactions and then write a Unit Test to verify the solution. /* Fraud Detection: Find Suspicious Transactions A bank wants to detect fraudulent transactions. A transaction is suspicious if: - The same user makes two transactions within 100 seconds of each other. - A single transaction amount exceeds $10,000. Return a list of users who have made fraudulent transactions. Example Input: transactions = [ { "userId": "Alice", "amount": 5000, "timestamp": 10050 }, { "userId": "Alice", "amount": 2000, "timestamp": 10200 }, { "userId": "Bob", "amount": 12000, "timestamp": 10400 }, { "userId": "Alice", "amount": 6000, "timestamp": 10700 } ] Output: ["Alice", "Bob"] */
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Staff Software Engineer (Java)

Interviewed at Sonar

3★
Sep 8, 2025

Variant of LeetCode 1169. Invalid Transactions and then write a Unit Test to verify the solution. /* Fraud Detection: Find Suspicious Transactions A bank wants to detect fraudulent transactions. A transaction is suspicious if: - The same user makes two transactions within 100 seconds of each other. - A single transaction amount exceeds $10,000. Return a list of users who have made fraudulent transactions. Example Input: transactions = [ { "userId": "Alice", "amount": 5000, "timestamp": 10050 }, { "userId": "Alice", "amount": 2000, "timestamp": 10200 }, { "userId": "Bob", "amount": 12000, "timestamp": 10400 }, { "userId": "Alice", "amount": 6000, "timestamp": 10700 } ] Output: ["Alice", "Bob"] */

code to Order the threads code to deadlock the threads code to implement custom Lock api code to find indexes of pair of numbers in given array whose sum is equal to given number code to find the palindrome numbers in given array provide the design/technical stack to develop a ecommerce website
avatar

Staff Software Engineer

Interviewed at ServiceNow

4.1★
Sep 22, 2020

code to Order the threads code to deadlock the threads code to implement custom Lock api code to find indexes of pair of numbers in given array whose sum is equal to given number code to find the palindrome numbers in given array provide the design/technical stack to develop a ecommerce website

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