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How To Solve LeetCode 1193
Problem Description The table Transactions has the following columns: - id primary key - country - state enumeration: 'approved' or 'declined' - amount - trans...
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Thinking in First Principles: How to Question an Async Queue–Based Design
Async queues are one of the most commonly suggested “solutions” in system design interviews, but many candidates jump straight to using queues without understan...
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Building Interview prep ai
markdown Introduction: Revolutionizing Technical Interview Preparation The journey to landing a dream role in tech often hinges on mastering the technical inter...
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I Lost an Interview So You Don’t Have To: A Lesson in Interview Prep
Background I applied for a position and, after completing the technical round, was rejected. The feedback I received was: > “We’re happy with your code. Let’s...
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Learning set, unordered_set, and priority_queue in C++
set Overview - Unique + Sorted data - Stores unique elements - Maintains sorted order - Implemented using a self‑balancing BST Red‑Black Tree Example cpp inclu...
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Day 0: Starting My DSA Journey
Day 0 – Planning, Mindset & Commitment - Goal: Become strong in problem‑solving & interview‑ready - Starting level: Beginner / Revising basics - Daily commitme...
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What If the OOD Interview Doesn’t Go as Planned?
No matter how well you prepare, real interviews rarely follow a perfectly linear path. You might face curveballs such as shifting requirements, unexpected deep...
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I’ve systematized the Big Tech interview process into 4 phases and a single-page scorecard
!Cover image for I’ve systematized the Big Tech interview process into 4 phases and a single-page scorecardhttps://media2.dev.to/dynamic/image/width=1000,height...
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Master Recursion and DP: A Visual Guide
Recursion is a stack; DP is a table. Stop guessing and use AI visuals to build rock‑solid mental models for the hardest algorithm topics. Recursion and Dynamic...
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Questions Engineers Must Ask Future Employers in Interviews (and Why)
Article URL: https://dollardhingra.substack.com/p/questions-software-engineers-should Comments URL: https://news.ycombinator.com/item?id=46391064 Points: 5 Comm...
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Day 76: Python Binary Exponentiation – O(log n) Fast Power Calculation Without Built-Ins
Fast Power Function Overview This intermediate challenge implements binary exponentiation to compute x^n in Olog n time using bit manipulation and iterative sq...
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Best AlgoExpert Alternatives in 2025: Free & Paid Options Compared
Originally published on LeetCopilot Blog AlgoExpert costs $199/year for 160 curated problems. Here are the best alternatives—from free NeetCode to LeetCode Prem...