How Many LeetCode Problems Should I Do? (Even for FAANG)

It's the question everyone Googles: 100? 300? 500? The honest answer is that the number is the wrong target — and chasing it is a big reason people grind for months and still fail interviews.

Let's replace the count with something that actually predicts readiness.

Why the count is a bad metric

Two candidates both show "150 solved." One struggled through each problem, reviewed mistakes, re-derived the hard ones, and practiced explaining. The other read the editorial after ten minutes on most of them and moved on. Same number, completely different interview ability.

The count can't tell those two apart, which is exactly why it's misleading. People report solving 300, 500, even 600 problems and still failing — usually because the volume was shallow: solved once, never reviewed, no feedback loop. (More on that in solved 500 problems and still failing interviews.)

Solving 500 problems shallowly is worth less than 150 with real depth.

What actually predicts readiness

Interviews test a bundle of things a raw count ignores:

Pattern coverage. Can you recognize the ~15–20 recurring patterns (two pointers, sliding window, BFS/DFS, backtracking, heaps, DP templates) on sight? These cover the large majority of interview questions. Breadth of patterns beats breadth of problems.
Recall, not recognition. Can you re-derive an approach cold, days later, from a blank page — or does it only feel obvious when you're looking at the solution?
Performance under pressure. Can you do it timed, out loud, without the internet, while someone watches?
Weak-spot awareness. Do you know which patterns you're still shaky on, or are you just adding easy wins to the pile?

A useful rule of thumb: you're ready when you can pick a random medium in a pattern you've studied and solve it cleanly, unaided, in ~35 minutes, while narrating — consistently. That's a capability, not a count.

How many LeetCode problems before an interview? (a rough guide)

Numbers can anchor a plan, as long as you treat them as a floor for quality practice, not a finish line:

~50–75 well-reviewed problems across the core patterns is often enough to be competitive for many roles — if they're deeply understood and reviewed, not skimmed.
~150 with strong pattern coverage and spaced review puts most people in good shape for tougher loops.
Past that, more problems with the same shallow approach adds very little. The returns come from depth and review, not the next hundred.

The medium tier is the sweet spot: easies for warm-ups, hards sparingly. If you can handle mediums comfortably across patterns, you're in a strong position.

How many LeetCode problems for FAANG?

FAANG-style loops raise the bar on consistency, not on a magic number. You'll typically face several coding rounds, often mediums with a follow-up, and you need to perform in most of them. That changes what "enough" means:

Pattern coverage has to be complete. A gap in graphs or DP that you could get away with elsewhere will eventually show up across four or five rounds.
Mediums must be reliable, not lucky. Aim to solve unseen mediums cleanly in ~30–35 minutes most of the time, with time left for the follow-up.
Company-tagged practice helps last, once the fundamentals are solid — not as a replacement for them.

In practice that often means the ~150 range with thorough review, plus timed mock interviews. When people say they needed 300+, the extra volume is often compensating for forgetting rather than adding new skill.

How many LeetCode problems per day?

One to three new problems a day, plus your reviews, is a pace most people can sustain alongside a job or classes. A few guidelines:

Reviews come first. Re-solving what's due protects the work you've already done; new problems are only worth it if the old ones stick.
Time-box each problem (~30–45 minutes) before looking at hints, then study the solution properly and schedule a re-solve.
Consistency beats bursts. Two problems a day for three months beats a 30-problem weekend followed by two weeks off.

If a daily count starts to feel like the goal, you're back to optimizing the wrong number. A simple LeetCode tracker with review dates keeps the focus on what's due, not how many you did today.

Measure readiness, not volume

Instead of counting problems, track signals that map to the interview:

How many patterns can you solve unaided?
Which patterns are still weak?
How many of your "solved" problems can you actually re-derive on review?

That's the dashboard that matters — and it's the one CodingPartner gives you ("Solved → Interview-ready"): score each attempt on real interview dimensions, review on a spaced schedule so recognition becomes recall, and see true mastery and weak spots at a glance. When those signals are green, you're ready — regardless of whether the number is 80 or 300.

Related: Why you forget LeetCode solutions · Spaced repetition for LeetCode