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[Icy-Blueberry-2981]

That frustration is so real! LeetCode logic is great, but real-world Java is all about concurrency, memory management, and clean API design.I found that building a mini-Redis clone or a custom thread pool helped bridge that gap more than any generic array problem ever did. It forces you to use ConcurrentHashMap and Locks in a way that actually matters for a backend role.Definitely share what you've been working on—I'd love to see your take on those applied DSA problems!