Should a New Coder Really Open LeetCode First?

A candidate messaged me last week asking why she’d solved 61 LeetCode problems and still froze on a basic two-pointer question in a real interview. That question, is LeetCode good for beginners, comes up in almost every prep conversation I have, and the honest answer is: it’s good, but not first, and not alone.

LeetCode is a problem bank. It is not a curriculum. Those are different products wearing the same URL, and the gap between them is where a lot of beginners lose three or four months.

Is LeetCode Good for Beginners, or Is That the Wrong Question?

Short answer: LeetCode is fine for beginners once you already know the patterns you’re practicing. It’s rough as a starting point because the site sorts by difficulty label, not by concept, and a fresh account drops you into a list of 3,600-plus problems with no map. You pick one, you’re stuck, you look at the solution, you feel worse than before you started. That loop is the actual reason so many people bounce off it in the first two weeks.

Think of it less like a textbook and more like a gym full of equipment with no trainer. The equipment works. Somebody still has to tell you which machine hits which muscle, and in what order.

You sign up. You see labels like Easy, Medium, Hard. You click Easy. Some Easy problems (Two Sum) are genuinely approachable. Others (certain string-parsing ones) are Easy by LeetCode’s internal difficulty curve, not by how obvious the trick is to someone who’s never seen a hash map used this way.

Nothing on the page tells you that Two Sum teaches the hash map pattern, or that pattern shows up again in maybe 40 other problems once you can name it. You just see a wall of titles. A beginner has no way to know that solving problem 1 should change how they read problem 217.

It helps to name what’s actually missing rather than just feeling stuck. LeetCode is missing three things a true beginner needs: a sequence, a reason each problem was chosen, and feedback beyond a green checkmark. A checkmark tells you the code ran. It says nothing about whether you’d have found that approach without the hint panel open in the next tab.

The Real Beginner Problem: Volume Without a Path

The common failure looks like this: a beginner has done well over 100 LeetCode problems, cold, in whatever order the site suggested or a YouTube video told them to. All three could recite a solution they’d memorized. None of them could adapt that solution when I changed one constraint in the live round. That’s not a them problem. It’s what happens when volume substitutes for a sequence.

Coding interviews test pattern recognition under a small amount of pressure, not memory. Grinding random problems trains memory. Those aren’t the same skill, and the mismatch only shows up once someone’s already in the room.

I’ll admit I don’t have a clean answer for how much this changes for someone prepping for a take-home assignment instead of a live round. The pressure is different and I haven’t watched enough of those to say the same advice holds.

Blind 75 and NeetCode 150: The Part Nobody Explains Up Front

This is why curated lists exist on top of LeetCode’s own catalog. Blind 75 groups a smaller set of problems by pattern (arrays, two pointers, sliding window, and on) so a beginner can see the shape of a technique three or four times in a row instead of once every 40 problems. NeetCode 150 is the same idea, wider. We’ve written up how the two lists actually differ, problem by problem, in our NeetCode 150 vs Blind 75 comparison, and there’s a walkthrough of the Blind 75 order specifically in our Blind 75 guide.

Neither list replaces LeetCode. Both sit on top of it. LeetCode hosts the problems and runs your code; the list tells you which 75 or 150 of its 3,600 problems actually matter and in what sequence to hit them.

Alternatives, and How Long This Should Actually Take

People ask me this constantly, usually after they’ve already burned two weeks on the raw catalog. NeetCode.io wraps a curated list around video walkthroughs of each problem, which helps if you learn better by watching someone think out loud before you try it yourself. HackerRank leans more toward language fundamentals and is arguably a gentler on-ramp if you’re still shaky on syntax rather than algorithms. AlgoExpert charges a subscription for curated video explanations, which is fine if the structure is worth the cost to you, though nothing there teaches a concept LeetCode’s own discussion tab doesn’t eventually surface for free.

None of these replace practicing under something closer to real conditions, though. A curated list plus a video explainer still leaves you alone with a blank editor and a silent room. That’s a different kind of pressure than a live interview, where a stranger is watching you think and asking follow-up questions mid-solve.

Pick one path and stay with it for at least three weeks before switching. Jumping between NeetCode, HackerRank and a random YouTube series every few days feels like progress and mostly isn’t; you end up with fragments of three different sequences and a full picture of none of them.

Six to ten weeks, roughly, if you’re doing this alongside a job or classes and not full time. That’s a wider range than most guides admit, because it depends heavily on how much of the underlying data structure knowledge (arrays, hash maps, basic recursion) you’re bringing in versus building from zero. Someone coming out of a CS degree might clear Blind 75 in four weeks. A self-taught beginner switching careers might need twelve, and that’s not a failure, it’s just a longer runway.

What matters more than the exact week count is whether you’re reviewing old problems, not just adding new ones. Revisit a problem from week one during week five. If it’s slower or shakier than you’d expect, that’s a signal the pattern didn’t stick the first time, and no amount of new volume fixes that; only repetition does.

When LeetCode Stops Being Enough on Its Own

Somewhere around problem 40 to 60, most people plateau. They can solve problems they’ve seen a version of before and stall on anything new. This is the point where a pattern cheat sheet earns its keep, and it’s a step most beginners skip because nobody tells them it exists until they’ve already hit the wall. We keep one for exactly this stage, mapped by technique rather than difficulty: the LeetCode patterns cheat sheet.

It’s also the point where practicing out loud starts to matter more than practicing alone. A silent LeetCode session teaches you to write correct code. It doesn’t teach you to narrate your thinking while someone watches, which is the actual skill being graded in a live round. I’d argue that gap, not raw problem count, is what separates someone who’s ready from someone who just feels ready. That’s a claim someone could reasonably push back on, and I’ve been wrong about a candidate’s readiness before based on how many problems they’d logged.

My Honest Take, After Watching This Play Out

I don’t think LeetCode is overrated. I think it’s misused. Used as the entire prep plan, it produces candidates who are strong on the platform and shaky in the room. Used as the practice layer under a real sequence, and paired with talking through problems out loud (we built LastRoundAI’s mock interview mode around exactly that gap, if you want a low-stakes place to rehearse the talking part), it does what it was built to do.

Data backs up why the talking-out-loud piece matters beyond just interview polish. Stack Overflow’s 2024 Developer Survey found most professional developers still rate collaboration and communication skills as core to the job, not a soft add-on. An interview that only checks whether you can produce a correct answer, silently, misses most of what the role actually needs day to day.

So Where Should a Beginner Actually Start?

Start with a curated list, not the raw catalog. Blind 75 if you want the smaller, tighter set; NeetCode 150 if you have more runway and want fuller pattern coverage. Solve each problem, then immediately solve one more from the same pattern before moving on, so the technique sticks rather than the specific problem. Say your approach out loud before you type, every time, even when nobody’s listening. And expect the plateau around problem 40 to 60. It’s normal, not a sign you’re bad at this.

LeetCode earns its reputation once you stop treating it as the plan and start treating it as the practice field the plan runs on. Whether that distinction clicks in week one or week eight is mostly a matter of who tells you about it first.

One more thing worth saying plainly: struggling in week two doesn’t mean you’re bad at this. It means you started with the catalog instead of the map. Fix the order and the rest tends to follow.