LeetCode
freemiumIndustry-default algorithm/DS practice
Free tier covers most FAANG DSA prep. Premium ($35/mo) unlocks company tags. Still standard for junior/mid despite AI-assisted interview shift.
| URL | https://leetcode.com |
| Tier | freemium |
| Relevance | medium |
| Last active signal | 2026-06 weekly contests, 3000+ problems |
| Verified alive | yes |
| Category | Interview prep |