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 EngineerNew Grad LockedBuild a CSV Query Engine
This question evaluates proficiency in text parsing, data modeling, and implementing in-memory query semantics, including CSV parsing rules, type infe...
Coding & Algorithms
6
0
44 people solved
Jan 31, 2026
Easy
Software Engineer LockedImplement array parity and tree level views
This question evaluates proficiency in array frequency analysis and binary tree traversal, testing skills in data structures, correctness reasoning, a...
Coding & Algorithms
5
0
40 people solved
Mar 24, 2026
Medium
Data Scientist LockedCount heavy callers in 7 days
This question evaluates proficiency in SQL-based data manipulation and analytics, covering joins between user and call records, aggregation and distin...
Data Manipulation (SQL/Python)
7
0
68 people solved
Mar 24, 2026
Medium
Data AnalystShould the mulch promotion continue?
A home-improvement retailer is running a seasonal promotion on bagged mulch. Business context - Regular price: $3.50 per bag - Promo price: $2.00 per ...
Analytics & Experimentation
3
0
54 people solved
Dec 15, 2025
Easy
Data Scientist LockedDesign a house-price prediction model
This question evaluates machine learning and data science competencies including regression model design, feature engineering, data-splitting and leak...
Machine Learning
10
0
72 people solved
Dec 15, 2025
Easy
Software EngineerFind a special person using knows(a,b)
Problem You are given n people labeled 0 to n-1 at a party. You can call an API: - knows(a, b) -> bool: returns true if person a knows person b, other...
Coding & Algorithms
14
0
106 people solved
Dec 15, 2025
Medium
Software EngineerBuild an Auth0-protected MCP server
Hands-on OA: Build an MCP server secured by Auth0 JWTs You are asked to build a local HTTP service that implements a minimal MCP (Model Context Protoc...
Software Engineering Fundamentals
26
0
203 people solved
Dec 15, 2025
Medium
Machine Learning EngineerDesign model deployment, monitoring, and low-latency inference
You have trained a fraud detection model and need to productionize it. Part A: Deployment - How would you deploy an ML model to production? - What art...
ML System Design
17
0
128 people solved
Dec 15, 2025
Medium
Machine Learning Engineer LockedDesign weapon-selling ad detection from posts
This question evaluates a candidate's ability to design a production-scale multimodal ML system for detecting weapon-selling ads, testing competencies...
ML System Design
14
0
111 people solved
Dec 15, 2025
Medium
Software Engineer LockedConnect Motion Planning, Stability, and LQR Control
Connect four layers of mobile-robot reasoning: transfer-function stability, A* versus RRT planning, temporal-logic safety and liveness, and LQR feedba...
Software Engineering Fundamentals
0
0
7 people solved
May 25, 2026
Easy
Software EngineerSenior+ LockedDesign a Dependency-Aware CI/CD Pipeline
Design a dependency-aware CI/CD platform that schedules DAG jobs on isolated runners and preserves logs, artifacts, and durable execution state. Addre...
System Design
0
0
11 people solved
May 25, 2026
Easy
Software EngineerSenior+ LockedCount Pairs with the Minimum Absolute Difference
Count unordered index pairs whose values have the minimum absolute difference in an integer array. Sorting reveals the minimum gap, while duplicate ru...
Coding & Algorithms
0
0
7 people solved
May 25, 2026
Medium
Software Engineer LockedCompute Exclusive Execution Times
This question evaluates understanding of nested function execution and precise exclusive-time accounting derived from chronological logs, emphasizing ...
Coding & Algorithms
0
0
16 people solved
May 25, 2026
Hard
Backend EngineerImplement Popular and Ranked Voting
You are given ranked ballots in aggregated form. Each key is an ordered tuple of candidate names representing one voter's preference from highest to l...
Coding & Algorithms
3
0
49 people solved
Jan 30, 2026
Medium
Software EngineerSolve 15 common Apple coding questions
The post summarizes high-frequency coding problems reported for Apple Software Engineer interviews. Practice the following algorithm and data-structur...
Coding & Algorithms
25
0
184 people solved
Jan 30, 2026
Medium
Software EngineerShow role fit using past ad experience
In a manager interview for an ads engineering role, you’re often evaluated on whether you can “join and immediately contribute.” How would you: - Map ...
Behavioral & Leadership
16
0
230 people solved
Jan 30, 2026
Medium
Data Scientist LockedMeasure Local News Launch Success
This question evaluates experimentation design, causal inference, metric definition, and the handling of interference and selection bias in product an...
Analytics & Experimentation
3
0
53 people solved
Mar 23, 2026
Medium
Software EngineerDetermine dictionary-based string segmentation
You are given a string s and a set of tokens dict. Determine whether s can be segmented into a sequence of one or more tokens from dict. If segmentati...
Coding & Algorithms
3
0
64 people solved
Aug 14, 2025
Medium
Software EngineerDesign file deduplication across nested directories
Design and implement a file deduplication tool that, given a root directory, identifies groups of duplicate files. Requirements: traverse nested direc...
Coding & Algorithms
21
0
209 people solved
Aug 14, 2025
Easy
Software EngineerImplement a String Deque
Implement a double-ended queue (Deque) that stores strings. Your implementation must support the following operations: - addFirst(data): Insert data a...
Coding & Algorithms
0
0
10 people solved
Jan 29, 2026