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    The Production Checklist for Vibe-Coded Applications

    A practical checklist for reviewing AI-assisted applications before putting real users, data or money behind them.

    GuideWebIntermediate

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    Choose your path: AI app builder or code

    Before you build anything, decide how you'll build it: an AI app builder, AI-assisted code or code you write yourself. Here is what each costs you in speed, control and risk.

    ChapterWebBeginner

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    Quantitative Aptitude Formula Sheet (Free PDF)

    Every formula from our quantitative aptitude guide on a printable PDF: percentages, interest, ratios, time and work, speed and distance, permutations and probability.

    Free PDFPDFBeginner

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    20 HR Interview Questions for Freshers (with Sample Answers)

    The HR questions freshers commonly face in campus and off-campus interviews, grouped by theme. For each one: what the interviewer is checking, a simple structure for your answer, and a short sample answer to adapt to your own experience.

    GuideWebBeginner

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    90-Day Placement Preparation Roadmap

    A 90-day plan for campus placements in seven stages: DSA foundations, core patterns, CS fundamentals, aptitude, projects and resume, mock interviews and final revision. Each stage says what to do and how to tell when you are ready to move on.

    RoadmapWebAll levels

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    DBMS Quick Revision Notes

    Exam-focused DBMS revision notes covering keys, the ER model, relational algebra, SQL, normalization up to BCNF with one worked example, transactions, concurrency control and indexing, ending with a last-minute checklist.

    GuideWebAll levels

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    Frontend Developer Roadmap 2026

    A step-by-step path from your first web page to job-ready frontend work: HTML and CSS, JavaScript, Git, React, TypeScript, testing, accessibility, performance, deployment and responsible use of AI coding tools. Each step has a project to build and free official resources.

    RoadmapWebBeginner

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    How to Review AI-Generated Code Before Shipping It

    A practical process for reviewing AI-generated diffs for behaviour, security and maintainability before they reach production: what to read first, what to distrust, and what to ask the agent.

    GuideWebIntermediate

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    Operating Systems Important Questions (with Answers)

    Important operating systems questions with concise answers, grouped by unit: processes and threads, CPU scheduling, synchronization, deadlocks, memory management and file systems, with solved scheduling, Banker's algorithm, page replacement and disk scheduling problems.

    Practice sheetWebAll levels

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    Quantitative Aptitude Formulas for Placement Tests

    A formula sheet for the quantitative section of placement aptitude tests, from percentages and interest to time and work, speed, permutations, probability and number system, with a worked example for each topic.

    GuideWebBeginner

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    Supabase RLS Mistakes That Can Expose Your Application

    Your Supabase key ships in every browser bundle, so Row Level Security decides what each request can touch. These are the policy mistakes common in Supabase apps, especially AI-generated ones, and how to verify policies before launch.

    GuideWebIntermediate

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    Top Array Interview Questions (with Answers)

    30 array questions that come up again and again in placement coding rounds, grouped into five patterns: two pointers, sliding window, prefix sums, hashing, and intervals and sorting. Each has a LeetCode link, the approach, a Python sketch and its complexity.

    Practice sheetWebAll levels

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