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 Engineer LockedFind shared courses between student pairs
This problem set evaluates data structures and algorithms competencies, covering mapping and set intersection for pairwise course overlap, permutation...
Coding & Algorithms
11
0
105 people solved
Jan 6, 2026
Hard
Software Engineer LockedFormat text into fixed-width justified lines
This question evaluates string manipulation, greedy packing, and precise space-distribution skills, assessing competency in algorithmic implementation...
Coding & Algorithms
10
0
77 people solved
Jan 6, 2026
Hard
Software EngineerDesign viewport dedup for Netflix home page
Design viewport dedup for Netflix home page Design the Above-the-Fold Deduplicated Home Page Rendering Context You are designing the initial viewport ...
System Design
31
0
314 people solved
Aug 1, 2025
Hard
Machine Learning EngineerDesign a scalable MapReduce pipeline
Design a scalable MapReduce pipeline Design a Large-Scale MapReduce-Style Data Processing System Context You are designing a batch pipeline, using a M...
System Design
32
0
246 people solved
Aug 1, 2025
Easy
Data ScientistCompute Groupon unit economics and break-even
Restaurant Coupons and Unit Economics Context: A restaurant's variable cost (VC) is 40% of pre-discount spend and fixed cost (FC) is $100/day. Assume ...
Statistics & Math
8
0
121 people solved
Oct 13, 2025
Medium
Data ScientistMinimize max L1 radius with k centers in 1D
You are given an array A of n integers (values may be negative and may repeat) and an integer k (1 ≤ k ≤ n). Place k cluster centers anywhere on the r...
Machine Learning
8
0
91 people solved
Oct 13, 2025
Medium
Data ScientistDesign theme-park profit model and bid decision
Theme Park Pricing and Land-Acquisition Case Context You manage pricing analytics for a Disney-like theme park. Baseline demand is steady. A land auct...
Analytics & Experimentation
14
0
93 people solved
Oct 13, 2025
Hard
Data ScientistEvaluate impact without randomized experiments
Estimating a Promotion's Causal Effect Without an Experiment Context You need to estimate the causal impact of a marketing promotion on engagement (e....
Analytics & Experimentation
6
0
81 people solved
Oct 13, 2025
Medium
Software EngineerDesign trip booking REST API and schema
Design a RESTful API for a guest to book a trip. Include: - Core endpoints (search availability, create booking, view/cancel booking, payment/confirma...
System Design
10
0
118 people solved
Feb 12, 2026
Medium
Software Engineer LockedExplain LLM fine-tuning and generative models
This question evaluates understanding of LLM adaptation techniques and trade-offs (fine-tuning and parameter-efficient methods) alongside knowledge of...
Machine Learning
22
0
176 people solved
Feb 12, 2026
Medium
Software Engineer LockedDesign a scalable coffee ordering notification system
This question evaluates a candidate's ability to design scalable, real-time distributed systems with emphasis on order lifecycle management, reliable ...
System Design
8
0
142 people solved
Feb 12, 2026
Medium
Machine Learning EngineerNew GradDesign video captioning under compute limits
Scenario You work on a multimodal team at a large short-video platform. The team has a multimodal large model that takes a video (sampled frames, with...
ML System Design
7
0
108 people solved
Feb 12, 2026
Medium
Software Engineer LockedDesign a meeting scheduler API
This question evaluates object-oriented design, interval data-structure and algorithmic thinking, and concurrent programming competence by requiring a...
Software Engineering Fundamentals
11
0
211 people solved
Feb 12, 2026
Medium
Software Engineer LockedExplain normalization, regularization, CTR, imbalance handling
This question evaluates mastery of normalization methods, regularization techniques, click-through-rate modeling, and class-imbalance strategies, with...
Machine Learning
5
0
78 people solved
Feb 12, 2026
Medium
Software EngineerAnswer leadership scenarios about influence and integrity
Answer the following behavioral questions with concrete examples (use STAR: Situation, Task, Action, Result): 1. Describe a time you convinced others ...
Behavioral & Leadership
6
0
86 people solved
Mar 4, 2026
Hard
Software Engineer LockedImplement IP Address Arithmetic
This question evaluates proficiency in IP addressing, parsing and validation, binary/address-space arithmetic, CIDR subnet calculation, and formatting...
Coding & Algorithms
6
3
40 people solved
May 12, 2026
Hard
iOS EngineerSenior+Design a BLE Command Handler
Design a Bluetooth Low Energy (BLE) command handler for an iOS application. The app needs to send commands to a wearable device over BLE. Commands mus...
System Design
5
0
44 people solved
Apr 17, 2026
Medium
Software EngineerReturn Elements Greater Than the Overall Average
Return Elements Greater Than the Overall Average Implement above_average(values). Compute the arithmetic mean of the entire non-empty integer list, th...
Coding & Algorithms
2
0
17 people solved
Jul 12, 2026
Medium
Software EngineerWalk through resume and resolve conflicts
Walk through resume and resolve conflicts Walk me through your resume. For each major project (use two representative ones, e.g. your most data- or sy...
Behavioral & Leadership
5
0
84 people solved
Jul 16, 2025
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