Interview Questions
Practice the exact questions companies are asking right now.
Questions
9.8k
Companies
511
Updated
08.16.2026
9.8k Questions 511 Companies08.16.2026
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
Machine Learning EngineerNew GradExplain overfitting, dropout, normalization, RL post-training
Machine Learning fundamentals Answer the following: 1. What is overfitting? How can it be mitigated in machine learning? 2. Narrowing to deep learning...
Machine Learning
14
0
110 people solved
Feb 12, 2026
Hard
Machine Learning EngineerDesign RL reward for speed limits
RL for Autonomous Driving — Conceptual + Practical You are training a reinforcement-learning agent to drive a vehicle. The interview moves from policy...
Machine Learning
39
0
312 people solved
Feb 12, 2026
Easy
Data ScientistInternHow would you answer a DS video interview?
Question You are interviewing for a Data Scientist Intern role at TransUnion. The technical screen is an asynchronous (one-way) video interview: you a...
Behavioral & Leadership
15
0
133 people solved
Feb 3, 2026
Medium
Machine Learning EngineerImplement Prefix Products and Their Backward Pass
Let x[0..n-1] be a sequence and define inclusive prefix products by y[i] = x[0] x[1] ... * x[i]. Work through the following variants. State how zero...
Machine Learning
5
0
68 people solved
Aug 23, 2025
Medium
Data EngineerSolve SQL and Python coding tasks
You are given a small library system with the following relational schema and several Python data-processing tasks. Answer the SQL questions and imple...
Coding & Algorithms
65
5
437 people solved
Nov 20, 2025
Medium
Software Engineer LockedDesign a Distributed Logging System
This question evaluates a candidate's ability to architect a large-scale distributed logging system, testing competency in data ingestion pipelines, f...
System Design
26
0
225 people solved
Jun 8, 2026
Medium
Data Scientist LockedMonthly Cohort Retention
This question evaluates practical SQL skills in user retention analysis, specifically the ability to build a monthly cohort retention table from raw a...
Data Manipulation (SQL/Python)
3
0
32 people solved
Jun 8, 2026
Hard
Software Engineer LockedLeast Frequently Used (LFU) Cache
This question tests practical data structure design by requiring an O(1) implementation of a Least Frequently Used cache with tie-breaking by recency....
Coding & Algorithms
1
0
13 people solved
Jun 20, 2026
Medium
Software EngineerInternKth Employee Reached in an Ordered Hierarchy
Kth Employee Reached in an Ordered Hierarchy Implement kth_recipients(boss, queries). Employees are numbered 0 through n - 1. boss[0] == -1; for every...
Coding & Algorithms
11
0
155 people solved
Jul 3, 2026
Medium
Software EngineerReconstruct itinerary with lexicographic ties
You are given m airline tickets as directed pairs [from, to]. Build an itinerary that starts at a specified airport start (e.g., "JFK") and uses every...
Coding & Algorithms
24
0
249 people solved
Sep 6, 2025
Easy
Data ScientistAnalyze member video posting behavior by country
Question You are given two tables describing LinkedIn members and the videos they upload. Write SQL (and optionally Python where noted) to answer the ...
Data Manipulation (SQL/Python)
8
1
119 people solved
Feb 1, 2026
Medium
Data Scientist LockedBuild Churn Prediction and Survival Models
This question evaluates a data scientist's competency in end-to-end churn prediction and time-to-event modeling in the Machine Learning domain, coveri...
Machine Learning
20
0
199 people solved
May 27, 2026
Medium
Software EngineerDefend a Project's Schema, Indexes, and Concurrency Model
Defend a Project's Schema, Indexes, and Concurrency Model Choose one data-heavy service you have built and defend its data model under a detailed tech...
Software Engineering Fundamentals
0
0
9 people solved
Apr 26, 2026
Hard
Software EngineerSenior+Lead a Project Retrospective Discussion
Lead a Project Retrospective Discussion Walk through a significant past project as a retrospective. Explain the hardest part, how the team addressed i...
Behavioral & Leadership
2
0
36 people solved
Apr 16, 2026
Medium
Software Engineer LockedDeep-Copy a Linked List with Random Pointers
Clone a linked list whose records use arbitrary IDs for next and random pointers. Translate every identity and pointer through supplied fresh IDs whil...
Coding & Algorithms
1
0
16 people solved
Jun 19, 2026
Medium
Software EngineerSenior+ AIDesign an On-Demand Delivery Platform
Design an on-demand local delivery marketplace for restaurants or grocery stores. The platform should support customers browsing merchants, building s...
System Design
4
0
61 people solved
Apr 25, 2026
Medium
Software EngineerImplement CRUD API and tests
You are given two software-engineering tasks. 1. Implement a simple REST API for a resource such as Note or Message. - Support basic CRUD operation...
Software Engineering Fundamentals
18
0
163 people solved
Jan 15, 2026
Medium
Frontend EngineerSenior+ LockedReview Code for Memory Risks
This question evaluates competency in memory management, performance analysis, and code-review skills for frontend implementations that deduplicate ob...
Software Engineering Fundamentals
8
0
83 people solved
May 15, 2026
Medium
Software EngineerCompute the Minimum Number of Meeting Rooms
Compute the Minimum Number of Meeting Rooms Problem Implement minimumMeetingRooms(intervals) -> rooms. Each interval is a two-element integer array [s...
Coding & Algorithms
0
0
4 people solved
Jul 17, 2026
Hard
Software EngineerDesign a low-latency ML inference API
System Design: Low-Latency ML Inference API (Real-Time) Context You are designing an in-region, synchronous ML inference API that sits on the critical...
ML System Design
65
0
822 people solved
Sep 6, 2025