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 EngineerFind the Kth Smallest Value in a Binary Search Tree
Problem Given a binary search tree with distinct integer values, return its kth smallest value, using one-based k. The tree is represented by parallel...
Coding & Algorithms
0
0
5 people solved
Apr 11, 2026
Medium
Software EngineerFind the Lowest Common Ancestor Using Parent Pointers
Problem Nodes in a rooted forest have parent pointers but no child lists and no root pointer. Given the parent relationship and two node indices, retu...
Coding & Algorithms
0
0
5 people solved
Apr 11, 2026
Medium
Software EngineerImplement a Formula Spreadsheet
Design and implement a small in-memory spreadsheet. The spreadsheet must support cell labels such as A1 and B10, where a label consists of uppercase l...
Coding & Algorithms
2
0
28 people solved
Apr 11, 2026
Hard
Machine Learning EngineerNew Grad LockedDesign a cold-start video recommender
This question evaluates proficiency in ML system design for recommender systems, focusing on cold-start handling, integration of content and graph fea...
ML System Design
6
0
113 people solved
Feb 15, 2026
Medium
Software EngineerSimulate bus boarding with priority and wheelchairs
You are implementing a simplified bus boarding simulator. Model: - Person has at least: - id (string/int) - priority (boolean): if true, they shou...
Software Engineering Fundamentals
26
0
241 people solved
Mar 4, 2026
Medium
Software EngineerSupport String Membership and Random Sampling
Support String Membership and Random Sampling Design an in-memory collection initialized from a set of strings. It must support: - contains(value) -> ...
Software Engineering Fundamentals
1
0
18 people solved
May 1, 2026
Medium
Software EngineerDesign a delivery cost dashboard with payments
Design a delivery cost dashboard with payments Object-Oriented Delivery Cost Dashboard Service Goal Design and implement an object-oriented service to...
System Design
35
0
247 people solved
Aug 1, 2025
Hard
Software EngineerDesign an end-to-end recommendation system
Design an end-to-end recommendation system System Design Prompt: End-to-End Movie Recommendation System You are tasked with designing an end-to-end mo...
ML System Design
13
0
91 people solved
Aug 1, 2025
Medium
Android Engineer LockedDesign Android MVVM API Architecture
This question evaluates a candidate's skill in designing Android client-side MVVM architecture, testing competencies in layered decomposition, HTTP re...
System Design
10
0
73 people solved
May 23, 2026
Medium
Data ScientistSenior+ AI LockedCompute Theme Similarity
This question evaluates understanding of set-based similarity metrics (the Jaccard coefficient) and practical coding skills for transforming and compa...
Coding & Algorithms
4
0
44 people solved
May 23, 2026
Hard
Software EngineerImplement a thread-safe producer–consumer buffer
Implement a thread-safe producer–consumer buffer Bounded Blocking Buffer with Shutdown and Timeouts You are asked to design and implement a thread-saf...
System Design
43
0
367 people solved
Jul 31, 2025
Medium
Software EngineerSolve two logic brain teasers
Two Classic Logic/Optimization Puzzles Puzzle 1: Heavier Ball with a Balance Scale You have 12 visually identical balls. Exactly one ball is heavier t...
Statistics & Math
6
0
98 people solved
Sep 6, 2025
Medium
Software EngineerExplain concurrency model preference
Multithreading vs. Callbacks — Experience and Trade-offs Context You are interviewing for a Software Engineer technical screen. The interviewer asks y...
Behavioral & Leadership
23
0
194 people solved
Sep 6, 2025
Hard
Machine Learning EngineerDesign an ML search system
Design an ML‑Powered Enterprise Document Search System Context You are designing a multi‑tenant enterprise search system that indexes documents from m...
ML System Design
11
0
145 people solved
Sep 6, 2025
Medium
Software EngineerExplain AI coding assistant usage strategy
Responsible Use of AI Coding Assistants in a Live Coding Interview Context In a live technical screen where AI coding assistants are allowed, you are ...
Behavioral & Leadership
43
0
346 people solved
Sep 6, 2025
Medium
Data ScientistNew Grad LockedEvaluate Promotions for Uber Eats Users
This question evaluates a data scientist's causal inference and experimentation competencies—including randomized trial design, treatment-effect estim...
Machine Learning
74
0
557 people solved
Apr 30, 2026
Medium
Software EngineerSenior+How do you use AI for coding?
An interviewer asks about your day-to-day use of AI coding assistants. Answer the following: 1) Do you use AI to write code at work? If yes, for what ...
Behavioral & Leadership
11
0
140 people solved
Oct 29, 2025
Easy
Software EngineerRepair Unsafe C++ Ownership with Smart Pointers
Repair Unsafe C++ Ownership with Smart Pointers Review this ownership sketch: `cpp class Engine { public: void start(); }; class Controller { ...
Software Engineering Fundamentals
1
0
19 people solved
Apr 9, 2026
Medium
Software EngineerDesign a Ride-Hailing Matching System
Design a ride-hailing matching system similar to a taxi or rideshare application (e.g. Uber, Lyft, DiDi). The interview focuses on the driver-location...
System Design
17
0
132 people solved
Apr 9, 2026
Medium
Machine Learning Engineer LockedPrevent Private Code Leakage in Coding Agents
This question evaluates competency in ML system design, data privacy and security, model training and inference safeguards, and mechanisms for detecti...
ML System Design
7
0
107 people solved
Apr 9, 2026