How to Practice LeetCode Effectively

· Category: Tech Career

Short answer

Effective LeetCode practice focuses on patterns, not memorization. Spaced repetition and timed practice build both recognition and speed.

Steps

  1. Start with the Blind 75 or NeetCode 150 curated problem lists.
  2. Group problems by pattern: arrays, binary search, BFS, DFS, DP.
  3. Spend 20-30 minutes attempting a problem before looking at hints.
  4. After solving, review the optimal solution and code it from scratch.
  5. Revisit problems after a week to ensure retention.

Tips

  • Use a spreadsheet to track problems, patterns, and retry dates.
  • Practice in your target interview language.
  • Focus on easy and medium problems for most non-Big Tech roles.

Common issues

  • Binge-solving without review leads to quick forgetting.
  • Copying solutions without understanding the underlying logic.