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
Hard
Software EngineerSenior+ AI LockedDesign a bus simulation metric
This question evaluates a candidate's ability to comprehend and navigate a large unfamiliar codebase, safely make targeted code changes, and design, i...
Software Engineering Fundamentals
8
0
71 people solved
Jan 29, 2026
Medium
Software Engineer LockedDesign a Conversational AI Assistant
This question evaluates system design, distributed systems, and real-time inference-serving competencies for building large-scale conversational AI pr...
System Design
22
0
197 people solved
Jan 29, 2026
Medium
Software Engineer LockedImplement an IPv4 Range Iterator
This question evaluates implementing iterative data structures and range-handling algorithms alongside numeric representation of IPv4 addresses and bi...
Coding & Algorithms
4
0
73 people solved
Jan 29, 2026
Hard
Machine Learning EngineerExplain overfitting and how to prevent it
You are asked rapid-fire ML fundamentals questions. 1. What is overfitting? Explain it in terms of training vs. validation performance and generalizat...
Machine Learning
14
0
97 people solved
Dec 13, 2025
Hard
Software EngineerDesign a personal finance aggregator
System Design: Personal Finance Aggregation Platform (Mint-like) Context Design a consumer-facing platform that aggregates a user's financial data acr...
System Design
22
0
169 people solved
Aug 13, 2025
Hard
Software EngineerDiagnose overloaded Kubernetes cluster
Kubernetes Overload: End-to-End Debug + Mitigation Plan You are given a Kubernetes-based microservices system that is currently overloaded, exhibiting...
System Design
12
0
104 people solved
Aug 13, 2025
Medium
Software EngineerFind k most frequent in linear time
Given an integer array nums and an integer k (1 ≤ k ≤ number of distinct values in nums), return any k values that appear most frequently. Implement a...
Coding & Algorithms
9
0
106 people solved
Aug 13, 2025
Hard
Software Engineer LockedImplement an In-Memory Query Engine
This question evaluates skills in data modeling, API design, algorithmic filtering, and implementation of an in-memory query execution engine, includi...
Coding & Algorithms
0
0
7 people solved
May 24, 2026
Medium
Software Engineer LockedCan You Place N Objects?
This question evaluates array traversal, adjacency-constraint reasoning, and greedy placement intuition, emphasizing handling of boundary conditions a...
Coding & Algorithms
9
0
72 people solved
Mar 22, 2026
Medium
Software EngineerDefine and compare smart pointers
What is a smart pointer? How do smart pointers manage ownership and lifetimes compared with raw pointers? Describe common types (unique, shared, weak)...
Coding & Algorithms
5
0
110 people solved
Aug 12, 2025
Hard
Data ScientistExplain ROC-AUC vs PR-AUC tradeoffs
Question You trained a binary classifier that outputs predicted probabilities. Compare ROC-AUC and PR-AUC (the latter usually reported as Average Prec...
Machine Learning
8
0
118 people solved
Dec 12, 2025
Medium
Machine Learning EngineerImplement K-Means and compare with GMM
Implement K-Means clustering from scratch for a dataset X of shape (n_samples, n_features) and a target number of clusters k. Your implementation shou...
Coding & Algorithms
3
0
59 people solved
Jan 28, 2026
Medium
Software EngineerDesign an in-memory filesystem and circular queue
Part A — Design an in-memory hierarchical file system. Requirements: - Support operations: ls(path), mkdir(path), createFile(path, content), appendToF...
Coding & Algorithms
8
0
119 people solved
Aug 11, 2025
Easy
Data Scientist LockedExplain a stochastic process simply
Statistics interview prompt testing the ability to explain stochastic processes in plain language, including intuition, examples, difference from a si...
Statistics & Math
4
0
33 people solved
Jul 5, 2025
Hard
Product ManagerMarket Sizing & Revenue Diagnostics
Market Sizing and Revenue Diagnostics Answer a multi-part Product Manager case covering market sizing, company revenue estimation, regional strategy d...
Product / Decision Making
22
0
84 people solved
Jul 4, 2025
Medium
Product ManagerBehavioral Fit & Leadership at TikTok
Behavioral Interview Prompt: Product Manager Fit and Leadership at TikTok You are preparing for a TikTok Product Manager interview focused on behavior...
Behavioral & Leadership
14
0
101 people solved
Jul 4, 2025
Hard
Software EngineerDesign an email spam detection system
Design an email spam detection system System Design: End-to-End Email Spam Detection Context Design an end-to-end system that detects and handles spam...
ML System Design
20
0
167 people solved
Aug 10, 2025
Hard
Data ScientistHow Would You Test Whether Momentum Is a Real Alpha Signal in Stocks?
In a quantitative-research data-analysis round, you are asked a methodology question. No coding is required — the interviewer wants you to reason like...
Machine Learning
3
0
38 people solved
Oct 28, 2025
Medium
Software EngineerSenior+Explain HashMap Resizing Without Long Pauses
Explain how a hash map works internally. Cover how keys are mapped to buckets, how collisions are handled, and when the table decides to resize. Follo...
Software Engineering Fundamentals
2
0
37 people solved
Oct 28, 2025
Medium
Software EngineerInternDiscuss goals, experience, conflicts, and logistics
Discuss goals, experience, conflicts, and logistics Behavioral & Leadership Screen — Software Engineer Internship Context You are interviewing for a s...
Behavioral & Leadership
6
0
52 people solved
Aug 9, 2025