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โšก LeetCode

Big tech coding interview prep โ€” 3,000+ algorithm problems

๐Ÿ”— Go to LeetCode
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Category
Algorithm Practice
Provider
LeetCode
Free
โœ… 2,000+ free problems
Platform
Web ยท iOS ยท Android

About

LeetCode is the world's leading platform for coding interview preparation, used by engineers targeting Google, Meta, Amazon, Microsoft, and other top tech companies. It offers 3,000+ problems in Easy, Medium, and Hard difficulty levels, with company-specific filters to study frequently asked questions. Most problems are free; LeetCode Premium ($159/year) adds company problem lists, editorial solutions, and exclusive challenges.

Key Features

Pricing

Free

  • 2,000+ problems free
  • Some solutions provided
  • Weekly contest access

LeetCode Premium ($159/yr or $35/mo)

  • Company problem filters
  • Full solutions & hints
  • Premium-only problems

๐Ÿ’ก Tips

  • Start with the "Top Interview 150" or the community-curated "Blind 75" problem list โ€” these cover the patterns that appear most frequently in big tech interviews.
  • For every problem, start with a brute-force solution, then optimise. Explicitly analyse time and space complexity at each stage โ€” interviewers care about this.
  • Compete in the weekly contest (every Sunday) regularly to build speed and composure under real time pressure โ€” the single most effective live practice available.

Frequently Asked Questions

Is the free tier enough to prepare?

Yes โ€” the vast majority of big tech interview preparation can be done with free problems. Premium is most useful if you want to see recent company-specific questions and official editorial solutions.

Which programming languages are supported?

Python, Java, C++, JavaScript, Go, Rust, Kotlin, and 15+ more โ€” any language commonly used in industry interviews is supported.

How does LeetCode compare to HackerRank or Codeforces?

LeetCode is most focused on interview-style problems used by FAANG and similar companies. HackerRank is popular for company-hosted take-home tests. Codeforces is competitive programming oriented. LeetCode is the go-to for interview prep specifically.