2,000+ LeetCode patterns recognized

Crack LeetCode Problems During Your Interview

Easy to Hard, Solved and Explained in Seconds

Most technical interviews are LeetCode problems in disguise. Interview Coder recognizes the underlying pattern instantly, generates the optimal solution, and provides the verbal walkthrough script you need to explain your approach naturally to the interviewer.

Pattern detection across 2,000+ problems
Optimal solution with step-by-step explanation
Verbal walkthrough script included
Follow-up optimization handling
Multi-language output
Interview Coder - Live coding assistance interface
Live coding assistance controls
Floating code assistance panel with real-time solutions

Beyond memorization

How Interview Coder Helps With LeetCode Interviews

Pattern Detection

Pattern

Recognizes the underlying LeetCode pattern — whether the problem is a variation of two sum, longest substring, merge intervals, or course schedule — and applies the optimal approach.

Optimal Solutions With Explanation

Solution

Generates the optimal solution with inline comments explaining each step. Includes Big-O analysis for both time and space complexity.

Verbal Walkthrough Script

Communication

Provides a natural-sounding script for explaining your approach: 'I'll use a sliding window because we need the longest contiguous subarray that...'

Follow-Up Handling

Adaptive

When the interviewer asks 'Can you optimize this?' or 'What if the array is sorted?', take a new screenshot and get an updated solution for the new constraints.

Multi-Language Support

Languages

Solutions in Python, Java, JavaScript, C++, Go, and more — generated in whichever language your interview requires.

Expert advice

LeetCode Interview Strategy Tips

1

Focus on 150 Key Patterns

Don't grind 2,000 problems. Master the Blind 75 or NeetCode 150. These cover the core patterns that 90% of interview questions are based on. Depth beats breadth.

2

Practice Explaining Out Loud

Solving the problem silently is only half the job. Practice explaining your approach as you code: 'I'm using a hash map here because I need O(1) lookup for...' This is what separates hire from no-hire.

3

Know the Difficulty Curve

Most interviews test at the Medium level. Easy problems are warm-up. Hard problems are rare and usually for senior+ roles. Focus 80% of your prep on Medium difficulty.

Pro tip: Interview Coder handles Easy through Hard problems and calibrates its explanation depth to match the difficulty level.

4

Time-Box Your Approach

Spend 5 minutes understanding and planning, 20 minutes coding, 5 minutes testing. If you're stuck after 10 minutes of coding, step back and reconsider your approach rather than debugging a fundamentally wrong solution.

LeetCode problems are predictable once you see the patterns. Interview Coder identifies the pattern in seconds so you can focus on clean execution.

Proof

Interview Coder working on real interviews

I'll show you how I got an offer from Amazon using Interview Coder. Throughout this whole video, you'll see me use Interview Coder for both the OA and the final round.

Full video here

Amazon Software Engineer OA + Interview

Oct 2025
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Oracle Software Engineer CodeSignal OA (Sep 2025)

Snowflake Software Engineer OA + Interview

Roblox Software Engineer CodeSignal OA

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Dream job

Successfully to find a Job
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Interview Coder
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Email: abdulla@interviewcoder.com

LeetCode Interview FAQ

Common Questions Answered

Interview Coder does not rely on memorizing specific problem solutions. Instead, it recognizes the underlying algorithmic patterns across over 2,000 LeetCode problems and applies the optimal approach to any variation it encounters. This means it handles novel problems that follow known patterns just as effectively as classic ones. It works across all difficulty levels including Easy, Medium, and Hard, covering every major category from arrays and strings to dynamic programming and advanced graph algorithms.

Couldn't find your answer?

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Solve LeetCode Problems in Real Time

Pattern recognition, optimal solutions, and verbal walkthroughs — all invisible to your interviewer. Download Interview Coder and ace your next LeetCode-style interview.

AI LeetCode Interview Solver | Interview Coder