Interview Questions
Practice the exact questions companies are asking right now.
"I got asked a hardcore MCM DP question and I saw it on PracHub as well. Solved that question in 5 minutes. Without PracHub I doubt I could solve it in 5 hours. Though somehow didn't get hired, perhaps I guess I solved it too fast? /s"
"Believe me i'm a student here jn US. Recently interviewed for MSFT. They asked me exact question from PracHub. I saw it the night before and ignored it cause why waste time on random sites. I legit wanna go back and redo this whole thing if I had chance. Not saying will work for everyone but there is certainly some merit to that website. And i'm gonna use it in future prep from now on like lc tagged"
"10 years of experience but never worked at a top company. PracHub's senior-level questions helped me break into FAANG at 35. Age is just a number."
"I was skeptical about the 'real questions' claim, so I put it to the test. I searched for the exact question I got grilled on at my last Meta onsite... and it was right there. Word for word."
"Got a Google recruiter call on Monday, interview on Friday. Crammed PracHub for 4 days. Passed every round. This platform is a miracle worker."
"I've used LC, Glassdoor, and random Discords. Nothing comes close to the accuracy here. The questions are actually current — that's what got me. Felt like I had a cheat sheet during the interview."
"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."
"Legit the only resource you need. TC went from 180k -> 350k. Just memorize the top 50 for your target company and you're golden."
"PracHub Premium for one month cost me the price of two coffees a week. It landed me a $280K+ starting offer."
"Literally just signed a $600k offer. I only had 2 weeks to prep, so I focused entirely on the company-tagged lists here. If you're targeting L5+, don't overthink it."
"Coaches and bootcamp prep courses cost around $200-300 but PracHub Premium is actually less than a Netflix subscription. And it landed me a $178K offer."
"I honestly don't know how you guys gather so many real interview questions. It's almost scary. I walked into my Amazon loop and recognized 3 out of 4 problems from your database."
"Discovered PracHub 10 days before my interview. By day 5, I stopped being nervous. By interview day, I was actually excited to show what I knew."
"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."
"The search is what sold me. I typed in a really niche DP problem I got asked last year and it actually came up, full breakdown and everything. These guys are clearly updating it constantly."
Design a News Feed and Mail Service
Design the following systems: 1. Aggregate news feed Build a service that ingests articles from many publishers, deduplicates and ranks them, and s...
Find minimum racks for 2D bin packing
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Design a large-scale news app with caching
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Design a Column-Queryable KV Database
Design a distributed key-value database for sparse records, where each row has a primary key and a flexible set of named columns. The system must supp...
Write SQL for basic user metrics
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Compute sum over consecutive-step subarrays
Given an integer array a of length n, call a subarray a[l..r] good if either: - it is strictly increasing by 1 at every step: a[i+1] - a[i] = 1 for al...
Design an Instagram Stories feature
Design a backend system for an Instagram Stories–like feature. Users can post short-lived stories (photos/videos) that are visible to followers and au...
Solve coding and AI-assisted tasks
This interview included several algorithm problems across a phone screen, onsite coding, and an AI-assisted coding round. Solve the following tasks: 1...
Distinguish Permit Requirement Outcomes
Your platform helps determine whether construction projects require permits in different municipalities. The current system can record conditions unde...
Solve restaurant path and order event tasks
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Implement account scheduler with locking and LRU
Design a class AccountScheduler that manages the time-based availability of a fixed set of account IDs. Initialization You are given: - accounts: a li...
Design viewport dedup for Netflix home page
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Flip a specific bit in an integer
Given a non-negative integer num and a zero-based bit position p, return the integer resulting from flipping only the bit at position p (i.e., 0 becom...
Implement a single-producer multi-consumer ring buffer
Implement a fixed-capacity ring buffer in C++ for a setting with one producer and multiple consumers. Design a class that stores integers in a preallo...
Design an in-memory key-value database
Design an in-memory key-value database Design an In-Memory Key–Value Database (Technical Screen) Context Build an in-memory key–value (KV) database th...
Calculate trapped water between elevation bars
Given an array of non-negative integers representing the heights of unit-width vertical bars, compute the total water retained after rainfall. Start b...
Explain Transformers, attention, decoding, RL, and evaluation
Technical Screen: Transformers, Attention, Decoding, RLHF, Evaluation, and Optimization Context: Assume a modern decoder-only LLM unless stated otherw...
Explain project scope, timeline, and delegation
10–15 Minute Project Deep Dive (Behavioral and Leadership in a Technical Screen) Context You are asked to present a concise, slide-driven deep dive on...
Design real-time stock price viewer
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Discuss challenges and cross-functional collaboration
Question Tell me about your most challenging project. Walk me through it end to end and be ready to go deep on the technical and the organizational si...