This guide has moved. The timelines now live inside How Many LeetCode Problems Do You Actually Need?, next to the problem counts they convert to, because the two questions have one answer.
The short version, for the reader in a hurry:
| Your situation | Timeline |
|---|---|
| Senior engineer who has passed loops before | 4 to 6 weeks |
| Working engineer, solid but rusty fundamentals | 6 to 8 weeks |
| New grad or early-career | 8 to 12 weeks |
| Career switcher or bootcamp grad | 4 to 6 months |
All ranges assume 1.5 to 2 focused hours a day. The full guide covers the four readiness milestones that matter more than the calendar, the schedule that works while employed full time, and the last-two-weeks plan.
Planning a one-month sprint instead? Start with Blind 75 vs NeetCode 150 vs Grokking 75 to pick your list, or go straight to the 4-week study plan.