Interview Questions
Practice the exact questions companies are asking right now.
Questions
10.0k
Companies
520
Updated
08.21.2026
10.0k Questions 520 Companies08.21.2026
PLTCHK
"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"
_The_TaNk_
"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"
ChrisSenior SWE, LinkedIn
"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."
sleepy33
"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."
JakeSenior ML Engineer, Lyft
"Got a Google recruiter call on Monday, interview on Friday. Crammed PracHub for 4 days. Passed every round. This platform is a miracle worker."
nuggetlord
"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."
CarlosFull Stack, Shopify
"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."
boba.tea.vibes
"Legit the only resource you need. TC went from 180k -> 350k. Just memorize the top 50 for your target company and you're golden."
AndySWE-II, Google
"PracHub Premium for one month cost me the price of two coffees a week. It landed me a $280K+ starting offer."
couchpotato99
"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."
ShrutiData Engineer, Salesforce
"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."
midnightramen
"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."
BiancaFrontend Eng, Figma
"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."
tambrahm007
"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."
toa
"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."
Showing 20 results
Role
Medium
Software EngineerSolve powers, phases, grid pops, and swaps
Solve the following four problems: 1) Count powers of k in an array: Given an array of positive integers nums and an integer k >= 1, return how many e...
Coding & Algorithms
13
0
139 people solved
Sep 6, 2025
Medium
Software EngineerDesign IP/CIDR rule matcher
Design and implement a rule matcher that returns 'accept' or 'deny' for a given IPv4 address based on a set of rules. Each rule can be either an inclu...
Coding & Algorithms
27
0
266 people solved
Sep 6, 2025
Hard
Software EngineerDesign scheduled payments and cancellation
Question Design a scheduled payments service for Coinbase that lets users create, list, update, execute, and cancel future-dated payments — both one-t...
System Design
7
0
118 people solved
Sep 6, 2025
Hard
Software EngineerSenior+Design consistent hashing for sharding
Design a Consistent-Hashing Router with Replication You are building a stateless router that maps arbitrary keys (for example, request IDs or cache ke...
System Design
20
0
186 people solved
Sep 6, 2025
Medium
Software EngineerImplement crawler and bracket validator
Implement two tasks: ( 1) Write a function crawl(start_urls, fetch, max_depth, domain_filter) that visits pages starting from the given seed URLs usin...
Coding & Algorithms
12
0
144 people solved
Sep 6, 2025
Medium
Software EngineerDesign a packet reassembler API
Design a PacketAssembler API for Streaming Fragments Context and Assumptions - You are building a small component that assembles packets from a byte s...
System Design
15
0
172 people solved
Sep 6, 2025
Medium
Software EngineerDescribe adapting quickly to unfamiliar problems
Behavioral & Leadership: Delivering Under Pressure, Learning Quickly, and Communicating Clearly Context: You are interviewing for a software engineeri...
Behavioral & Leadership
9
0
64 people solved
Sep 6, 2025
Medium
Software Engineer LockedChoose root to minimize edge reversals
This question evaluates understanding of directed versus undirected graph representations, tree rooting, and optimization of edge orientations, testin...
Coding & Algorithms
6
0
114 people solved
Feb 11, 2026
Medium
Software Engineer LockedDesign a backend for an online checkers game
This question evaluates system design and backend engineering competencies, including authoritative game-state modeling, turn-based concurrency contro...
System Design
19
0
153 people solved
Feb 11, 2026
Medium
Software EngineerDescribe a challenging project
Behavioral Question Describe one project you worked on that was particularly challenging. Please cover: - Context: What was the goal and your role/own...
Behavioral & Leadership
17
0
264 people solved
Feb 11, 2026
Medium
Machine Learning EngineerDesign a model to choose dynamic K
Problem You are building a recommender system with a two-stage ranking pipeline: 1. Candidate retrieval (recall): fetch top-K candidates for a request...
ML System Design
11
0
87 people solved
Feb 11, 2026
Medium
Data ScientistExplain core probability and ML statistics concepts
Answer the following short theory questions (you may use equations and brief examples): Probability 1. You roll two fair six-sided dice. - What is ...
Machine Learning
20
0
159 people solved
Feb 11, 2026
Medium
Software Engineer LockedDesign a group chat system
This question evaluates system design and distributed-systems competencies including real-time messaging architecture, API design, data modeling and s...
System Design
11
0
235 people solved
Feb 11, 2026
Hard
Software Engineer AI LockedImplement a Coin-Constrained Jump Strategy
This question evaluates a candidate's ability to design a stateful decision-making strategy combining physics-based motion reasoning, resource-constra...
Coding & Algorithms
2
0
45 people solved
Apr 29, 2026
Hard
Software EngineerImplement an In-Memory Database
Design and implement an in-memory database that stores records by key. Each record is a map from field to integer value. Implement the following funct...
Coding & Algorithms
5
0
49 people solved
Apr 29, 2026
Hard
Software Engineer LockedImplement a Contiguous Memory Manager
This question evaluates competence in designing efficient data structures and algorithms for interval management, contiguous allocation and deallocati...
Coding & Algorithms
10
0
156 people solved
Jan 19, 2026
Medium
Software EngineerImplement Stock Price Query APIs
You are given an initial collection of stock price records. Each record contains: - symbol: a stock name or ticker string - timestamp: initially a cal...
Coding & Algorithms
0
0
14 people solved
Apr 1, 2026
Easy
Software EngineerImplement a CSAT Sliding Window Tracker
Design and implement a class that tracks customer satisfaction scores over a sliding time window. A customer support conversation has: - conversation_...
Coding & Algorithms
3
0
42 people solved
Apr 1, 2026
Easy
Data ScientistSenior+ LockedWrite an average-income function
This question evaluates proficiency in data manipulation and basic statistical aggregation, particularly handling missing values and computing average...
Coding & Algorithms
13
0
106 people solved
Apr 1, 2026
Medium
Data ScientistInternDescribe past project experience clearly
You are interviewing for a Data Scientist Intern role in an asynchronous video interview format. Prepare concise, structured responses to the followin...
Behavioral & Leadership
5
0
52 people solved
Apr 1, 2026