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HackMNC is a comprehensive free platform for software engineering interview preparation. Access curated LeetCode problems asked by top companies including Google, Amazon, Microsoft, Meta, Apple, Netflix, and 40+ other MNCs. Master data structures and algorithms with topic-wise practice, study real interview experiences, and track your preparation progress. Perfect for freshers and experienced developers preparing for FAANG, product-based companies, and top IT service firms.

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Prefix Sum Interview Questions - Google, Amazon, Microsoft (2025)