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LeetCode Prep Insights

Practical guides, tips, and stories on coding interviews and smarter LeetCode practice with AI.

215 articles

Build a LeetCode Notes System That Becomes Your Personal Knowledge Base

Stop scattering solutions across tabs. Create a reusable notes template, add spaced repetition, and turn every solved problem into a searchable interview asset.

Study StrategyLeetCodeProductivityInterview Prep

LeetCopilot Team

11 min

10/18/2025

How to Debug LeetCode Solutions Effectively: Common Mistakes and Systematic Approaches

Debugging is a critical skill for coding interviews, but most candidates struggle with it. Learn systematic debugging techniques, common mistake patterns, and practical strategies to find and fix bugs faster in your LeetCode solutions.

DebuggingLeetCodeInterview PrepProblem SolvingBest PracticesCoding Skills

Emily Rodriguez

20 min

10/17/2025

LeetCode Dynamic Programming for Beginners: A Complete Step-by-Step Tutorial

Dynamic programming is one of the most challenging topics in coding interviews. This comprehensive guide breaks down DP concepts, patterns, and problem-solving strategies with clear examples to help beginners master this essential technique.

Dynamic ProgrammingLeetCodeAlgorithmsInterview PrepMemoizationOptimization

Michael Zhang

22 min

10/16/2025

Behavioral Interviews Decoded: Why Your Code Works But You Still Failed

You crushed the LeetCode Hard, but the rejection email still came. Why? You likely failed the 'Soft Skills' check. Master the STAR method and learn how to tell stories that get you hired.

Behavioral InterviewSoft SkillsSTAR MethodCareer Advice

David Ng

9 min

10/16/2025

Mastering Sliding Window: The 'Expand-Contract' Guide for Beginners

Struggling with 'Longest Substring'? The Sliding Window pattern is easy if you follow this step-by-step 'Expand-Contract' framework.

Sliding WindowLeetCodeAlgorithmsInterview PrepData StructuresTwo Pointers

Sarah Chen

18 min

10/15/2025

Overlapping Subproblems: Spot Them Before You Write DP

DP only works when subproblems overlap. Here's a simple checklist to recognize them before wasting time on brute force.

Dynamic ProgrammingLeetCodeInterview PrepAlgorithmsStudy Tips

LeetCopilot Team

10 min

10/15/2025

The 'Blank Screen' Nightmare: How to Debug Your Brain When You Get Stuck

Panic is the mind-killer. Learn the psychological and tactical strategies to overcome anxiety, unblock your thoughts, and salvage a coding interview when you hit a dead end.

Interview AnxietyPsychologySoft SkillsCareer Advice

David Ng

8 min

10/12/2025

Python vs. Java vs. C++: The Best Language for Coding Interviews in 2026

Stop wasting time debating syntax. Discover which programming language gives you the unfair advantage in technical interviews, and why 'speed to code' matters more than 'execution speed'.

PythonJavaC++Interview PrepCoding Languages

David Ng

7 min

10/10/2025

Why Everyone Hates LeetCode: Broken System or Skill Issue?

'Fuck LeetCode' isn't just rage—it's a symptom of a broken industry. Here is the honest truth about why it feels unfair (and how to win anyway).

LeetCodeRantBurnoutInterview PrepFairnessLearning StrategiesMental Health

Alex Chen

14 min

10/9/2025

Learn DSA with AI: A Field Guide for Real Progress

Most DSA plans fail on retention. Learn to use AI as scaffolding—not a shortcut—to build real skills, feedback loops, and edge-case instincts.

Data StructuresAlgorithmsAI AssistantLearning StrategiesLeetcodeInterview Prep

Alex Wang

14 min

10/7/2025

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