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
Software EngineerReturn the Most Frequent Integer with a Stable Tie-Breaker
Return the Most Frequent Integer with a Stable Tie-Breaker Given a nonempty integer array, return the value that appears most often. If several values...
Coding & Algorithms
1
0
16 people solved
Apr 17, 2026
Medium
Software EngineerRetain Top K Elements
Given a list of integers nums and an integer k, return a new list formed from the original list after removing every element except the k largest elem...
Coding & Algorithms
2
0
15 people solved
Apr 17, 2026
Medium
Software EngineerNew Grad LockedDetermine Whether Queries Can Zero Array
This question evaluates competency in array manipulation, range updates, and feasibility under constraints, focusing on reasoning about sequential int...
Coding & Algorithms
3
0
53 people solved
Apr 17, 2026
Medium
Software EngineerInternDesign Tic-Tac-Toe and QPS data structures
You are given two independent coding problems that focus on data structure and API design. --- Problem 1: Generalized Tic-Tac-Toe Game with Simple AI ...
Coding & Algorithms
52
0
377 people solved
Nov 13, 2025
Hard
Data Scientist LockedModel Soccer Shot Conversion
This question evaluates probabilistic predictive modeling, spatial-temporal feature engineering, model calibration and evaluation, and identification ...
Machine Learning
11
0
154 people solved
Dec 29, 2025
Hard
Machine Learning Engineer LockedAnswer ML fundamentals and diagnostics questions
This question evaluates proficiency with confusion-matrix metrics (recall and false positive rate), ensemble learning trade-offs, decision-tree split/...
Machine Learning
11
0
83 people solved
Jan 22, 2026
Easy
Software Engineer LockedExplain AWS access control and frontend typing
This question evaluates cloud infrastructure and access control (EC2, S3 pre-signed URLs, IAM), frontend React fundamentals (hooks and common pitfalls...
Software Engineering Fundamentals
1
0
33 people solved
Jan 22, 2026
Easy
Software Engineer LockedDesign a parking lot system
This question evaluates system design competencies such as scalable distributed architecture, real-time state management, data modeling, API design, c...
System Design
5
0
101 people solved
Jan 22, 2026
Easy
Software Engineer LockedTraverse a tree and answer 2D prefix sums
This question evaluates a candidate's competency in tree traversal and array preprocessing, specifically in-order traversal of binary trees and 2D pre...
Coding & Algorithms
10
0
73 people solved
Jan 22, 2026
Medium
Software Engineer LockedDesign an analytics dashboard for an AI chat app
This question evaluates a candidate's ability to design scalable observability and analytics systems for an AI chat product, including considerations ...
System Design
15
0
199 people solved
Jan 22, 2026
Hard
Software Engineer LockedDesign real-time crypto prices homepage
This question evaluates system design competency for real-time, low-latency data pipelines and client fanout for a crypto prices homepage, testing ski...
System Design
12
0
197 people solved
Jan 22, 2026
Medium
Data Scientist LockedTest whether samples follow a binomial distribution
This question evaluates a candidate's understanding of statistical hypothesis testing, goodness-of-fit assessment for discrete distributions, paramete...
Machine Learning
2
0
46 people solved
Jan 22, 2026
Medium
Data Scientist LockedExplain C++ virtual dispatch and object lifetime
This question evaluates a candidate's understanding of C++ virtual function dispatch, destructor and object lifetime semantics, stack versus heap allo...
Software Engineering Fundamentals
3
0
60 people solved
Jan 22, 2026
Medium
Software Engineer LockedReturn the longest contiguous subarray with all distinct values
This question evaluates a candidate's understanding of array-processing algorithms, duplicate detection, and maintaining state to identify the longest...
Coding & Algorithms
15
0
287 people solved
Jan 22, 2026
Hard
Software EngineerDesign a global restaurant menu update system
Design a menu update system for a global chain of restaurants. Context: - The chain operates in many countries. - Each restaurant may have multiple ki...
System Design
14
0
157 people solved
Nov 12, 2025
Hard
Software EngineerHow do you perform a thorough code review?
You are given several Python backend files to review (treat this as an “OA in code-review format”). The code performs database operations such as SQL ...
Software Engineering Fundamentals
9
0
95 people solved
Feb 17, 2026
Medium
Software EngineerAnswer static and streaming Top-K queries
Top-K in static and streaming settings (3 variants) You are given integers and asked to answer Top-K queries under three different scenarios. Variant ...
Coding & Algorithms
11
0
137 people solved
Aug 20, 2025
Medium
Software EngineerFind the First Bad Version in a Monotonic Release History
Find the First Bad Version in a Monotonic Release History You are given a release history as a boolean array bad. Versions use zero-based indices. Onc...
Coding & Algorithms
2
0
14 people solved
Apr 16, 2026
Hard
Software EngineerGroup Duplicate Files by Content
Group Duplicate Files by Content Given a snapshot of files, return groups of paths whose complete contents are identical. The interview report preserv...
Coding & Algorithms
0
0
9 people solved
Apr 16, 2026
Medium
Software EngineerMinimum Path Length Through a Grid With One Allowed Cell Conversion
You are given an m x n grid grid where every cell holds either 1 (an open cell you may stand on) or 0 (a blocked cell). You start at the top-left cell...
Coding & Algorithms
1
0
17 people solved
Jun 30, 2026