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
Easy
Software EngineerImplement Multi-Level In-Memory Services
Implement the following independent multi-level in-memory service simulations. In an interview, you may receive one scenario and unlock the levels seq...
Coding & Algorithms
1
0
13 people solved
Apr 4, 2026
Medium
Data EngineerWrite SQL revenue and anomaly queries
You are given two tables. Table: transactions | Column | Type | Description | |---|---|---| | transaction_id | int | Unique identifier for each transa...
Coding & Algorithms
4
0
66 people solved
Apr 4, 2026
Hard
Software Engineer AI LockedSolve checksum and dependency debugging tasks
This question evaluates skills in string processing, modular arithmetic-based checksum computation and mapping, plus debugging of feature enablement l...
Coding & Algorithms
15
0
128 people solved
Apr 4, 2026
Hard
Data ScientistInterpret p-values and common pitfalls
In a Fraud Data Science interview, you are asked “some p-value questions.” Answer the following in a fraud/experimentation context: 1) Define a p-valu...
Statistics & Math
6
0
60 people solved
Jan 2, 2026
Medium
Software Engineer LockedDesign a multi-size storage locker system
This question evaluates a candidate's system-design skills, including distributed systems architecture, resource allocation/bin-packing reasoning for ...
System Design
8
0
82 people solved
Jan 2, 2026
Easy
Data ScientistImplement K-means and handle train-inference mismatch
Part A — K-means (implementation + concepts) You are given a dataset \(X \in \mathbb{R}^{n \times d}\) and an integer \(k\). 1. Explain K-means: what ...
Machine Learning
22
0
313 people solved
Dec 6, 2025
Medium
Frontend EngineerSenior+Debug an Angular UI from User Reports
Debug an Angular UI from User Reports You receive an existing Angular frontend code sample and several concrete user-reported failures. Reproduce each...
Software Engineering Fundamentals
3
0
32 people solved
May 11, 2026
Hard
Software Engineer LockedBuild a Searchable Sentence Index
This question evaluates a candidate's ability to design and implement in-memory text indexes and related data structures, covering inverted indexing, ...
Coding & Algorithms
1
0
12 people solved
May 11, 2026
Hard
Machine Learning EngineerExplain LLM tuning and transformer basics
Answer the following machine learning questions: - Describe a project where you fine-tuned a large language model or another large foundation model. E...
Machine Learning
11
0
93 people solved
Jan 30, 2026
Medium
Software EngineerCompute top-K branches by openings
Compute top-K branches by openings Given a stream of account-opening events (branch_id, user_id, timestamp), design algorithms and data structures to ...
Coding & Algorithms
11
0
111 people solved
Aug 8, 2025
Easy
Software EngineerDescribe conflict, ambiguity, and process improvement
Prepare STAR-style responses for these behavioral prompts: - Tell me about a time you had a conflict with your manager. - Tell me about a time you imp...
Behavioral & Leadership
8
0
63 people solved
Jan 1, 2026
Medium
Machine Learning EngineerInfer the Smallest Valid Character Order from Sorted Password Hints
Infer the Smallest Valid Character Order from Sorted Password Hints You are given password hints already sorted according to an unknown alphabet. Infe...
Coding & Algorithms
0
0
3 people solved
Jun 24, 2026
Medium
Software Engineer LockedElements Occurring More Than n/3 Times in a Sorted Array
This question evaluates a candidate's ability to design frequency-counting algorithms over sorted arrays, testing knowledge of majority-element patter...
Coding & Algorithms
1
0
12 people solved
Jun 24, 2026
Medium
Software EngineerSenior+ LockedDesign a Resilient Document Aggregation Service
This system design question tests a candidate's ability to architect a fault-tolerant, high-throughput data aggregation service involving concurrent d...
System Design
6
0
91 people solved
Jun 24, 2026
Medium
Software EngineerCompute exclusive CPU time from nested logs
You are given logs from a single-threaded CPU that runs n functions (IDs 0 to n-1). Each log entry is a string in the format: - "functionId:start:time...
Coding & Algorithms
12
0
209 people solved
Mar 1, 2026
Medium
Machine Learning Engineer LockedDebug a PyTorch U-Net shape mismatch
This question evaluates proficiency in PyTorch model implementation, convolutional output shape arithmetic, channel configuration, and debugging of U-...
Coding & Algorithms
14
0
154 people solved
Mar 1, 2026
Hard
Machine Learning Engineer LockedFind a secret word using match feedback
This question evaluates algorithmic problem-solving, combinatorial reasoning, and information-theoretic search strategies for narrowing a secret from ...
Coding & Algorithms
7
0
87 people solved
Mar 1, 2026
Hard
Machine Learning Engineer LockedDesign an ML-powered search system
This question evaluates a candidate's ability to design end-to-end ML-powered search systems, testing competencies in information retrieval, ranking, ...
ML System Design
12
0
84 people solved
Mar 1, 2026
Medium
Software Engineer LockedDesign follow/follower classes
This question evaluates object-oriented design and data-structure modeling skills for directed graphs, testing competency in representing follow relat...
Software Engineering Fundamentals
39
0
349 people solved
Mar 1, 2026
Medium
Software EngineerExplain project choices, metrics, and AI usage
Behavioral / Project deep-dive You’ll be asked to walk through a recent project you worked on (preferably one with meaningful technical and business i...
Behavioral & Leadership
8
0
72 people solved
Mar 1, 2026