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
Data Scientist LockedShould a Restaurant Partner with Groupon?
This question evaluates the ability to analyze unit economics, marginal profitability, and cannibalization effects using quantitative assumptions and ...
Analytics & Experimentation
8
0
61 people solved
Feb 1, 2026
Medium
Data ScientistHow to evaluate lowering ETA?
Uber wants to estimate the business value of reducing ETA, where ETA is the predicted time from when a rider requests a trip until the driver arrives ...
Analytics & Experimentation
14
0
96 people solved
Feb 1, 2026
Medium
Software EngineerExplain what happens when you run ls
In Linux, explain the end-to-end flow of what happens when a user types ls in a shell and presses Enter. Include: - What the shell does - How the exec...
Software Engineering Fundamentals
8
0
62 people solved
Feb 1, 2026
Hard
Software Engineer LockedExtract stream prefix before stop token
This question evaluates streaming string processing, incremental substring detection across chunk boundaries, and memory-efficient algorithm design fo...
Coding & Algorithms
4
0
64 people solved
Feb 1, 2026
Medium
Software EngineerSolve Array Distance and Wiki Navigation
You are given two independent coding tasks. For each task, clarify edge cases, implement the function, and write meaningful test cases. Task 1: Minimu...
Coding & Algorithms
2
0
28 people solved
Apr 23, 2026
Medium
Software EngineerSolve Watcher Simulation And Integer Conversion
You are asked to solve two independent coding tasks. Task 1: Count players that reach the finish There is a one-dimensional track with integer positio...
Coding & Algorithms
1
0
16 people solved
Apr 23, 2026
Medium
Machine Learning EngineerImplement simulation-based portfolio optimizer in Python
Implement simulation-based portfolio optimizer in Python Given a pandas DataFrame 'returns' of daily asset returns (index: dates; columns: tickers) an...
Data Manipulation (SQL/Python)
3
0
56 people solved
Jul 31, 2025
Hard
Software EngineerDesign a scalable inventory system
Design a scalable inventory system System Design: Multi-Warehouse, Multi-Channel Inventory Service You are designing an inventory service for an e-com...
System Design
11
0
140 people solved
Jul 31, 2025
Medium
Software EngineerEvaluate arithmetic expression using DFS
Given a string representing an arithmetic expression with non-negative integers, +, -, *, /, parentheses, and optional spaces, evaluate its value. Use...
Coding & Algorithms
5
0
80 people solved
Jul 31, 2025
Medium
Machine Learning EngineerFind and count target-sum subarrays
Find and count target-sum subarrays Given an integer array nums and an integer target, implement: ( 1) a function that returns true if any non-empty c...
Coding & Algorithms
6
0
57 people solved
Jul 31, 2025
Medium
Software EngineerCompare deep learning framework trends
Compare deep learning framework trends This is an open-ended discussion question with two parts: 1. What high-level trends are happening at the deep l...
Machine Learning
9
0
65 people solved
Jul 31, 2025
Medium
Software EngineerAnswer rapid-fire behavioral questions
Answer rapid-fire behavioral questions In the DoorDash software engineer technical screen, you are asked to answer a rapid-fire battery of behavioral ...
Behavioral & Leadership
15
0
124 people solved
Jul 31, 2025
Medium
Software EngineerDesign a least-recently-used cache
Design a least-recently-used cache Design and implement a least-recently-used (LRU) cache with a fixed capacity. Support get(key) -> value and put(key...
Coding & Algorithms
11
0
100 people solved
Jul 31, 2025
Medium
Software EngineerExplain background and Salesforce motivation
Explain background and Salesforce motivation Behavioral: Background, Motivation, and Team Fit (Salesforce, GCP-Focused) Prompt Provide a concise, stru...
Behavioral & Leadership
13
0
105 people solved
Jul 31, 2025
Medium
Software EngineerHandle recruiter transparency and background checks
Handle recruiter transparency and background checks Candidate Disclosures, Background Checks, and Professional Communication Context You are interview...
Behavioral & Leadership
18
0
125 people solved
Jul 31, 2025
Easy
Software EngineerExplain hash collisions and Java HashMap complexity
Explain hash collisions and Java HashMap complexity in a software engineering interview. Cover how hashing works, what a collision is, how a hash tabl...
Software Engineering Fundamentals
10
0
108 people solved
Mar 4, 2025
Hard
Data ScientistCompute DID estimate and pretrend flag
You are given three equal-length arrays describing observations from a panel-like dataset: - period[i] ∈ {0,1}: 0 = pre period, 1 = post period - trea...
Analytics & Experimentation
12
0
95 people solved
Nov 24, 2025
Easy
Data ScientistNew GradDescribe resolving a conflict with a teammate
You are interviewing for a Data Scientist PhD Summer Intern role. Tell me about a time you had a conflict with a teammate on a research or data/ML pro...
Behavioral & Leadership
5
0
91 people solved
Nov 24, 2025
Medium
Product ManagerDescribe your background and top PM skills
You are preparing for a Product Manager behavioral interview. Build structured, interview-ready answers for this prompt cluster from the original inte...
Behavioral & Leadership
9
0
74 people solved
Aug 14, 2023
Hard
Machine Learning EngineerGenerate Instructions for a Blind Maze Robot
You are given a known 2D maze grid with m rows and n columns. Each cell is one of: - #: wall - .: empty cell - E: the exit, which appears exactly once...
Coding & Algorithms
1
0
11 people solved
Jan 31, 2026