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 EngineerReturn a Package Build Order
You are given an API: `python get_dependencies(package) -> list[str] ` It returns the direct dependencies of a given package. If package A depends on ...
Coding & Algorithms
4
0
59 people solved
Jan 28, 2026
Medium
Software Engineer LockedImplement File Tail and Sensor Health
This question evaluates skills in large-file streaming and buffer/pointer manipulation for tailing files, along with data-structure and time-window re...
Coding & Algorithms
9
0
80 people solved
Jan 28, 2026
Hard
Machine Learning Engineer LockedImplement Distributed Matrix Multiplication
This question evaluates distributed systems and parallel algorithm skills, specifically distributed matrix multiplication, data partitioning (row- and...
Coding & Algorithms
5
0
51 people solved
Jan 28, 2026
Medium
Software Engineer LockedSolve Two Grid Search Problems
This question evaluates proficiency in graph traversal on grids, specifically competencies in identifying connected components and modeling propagatio...
Coding & Algorithms
11
0
77 people solved
Jan 28, 2026
Medium
Product Analyst LockedWrite Call Analytics SQL Queries
This question evaluates SQL data manipulation and analytical competencies, including aggregation, joins between user and event tables, time-window fil...
Data Manipulation (SQL/Python)
3
0
26 people solved
Jan 28, 2026
Easy
Software EngineerImplement a consistent hashing ring
Implement a class ConsistentHashRing that distributes keys across servers using a hash ring with virtual nodes. Required API: - ConsistentHashRing(rep...
Coding & Algorithms
17
0
172 people solved
Jan 28, 2026
Medium
Data Scientist LockedCompute value of card guessing game
This question evaluates probabilistic reasoning, expected-value computation, sequential decision-making, and the ability to reason about optimal strat...
Machine Learning
3
0
41 people solved
Sep 18, 2025
Medium
Data Scientist LockedAnalyze duplicating data in linear regression
This question evaluates understanding of linear regression theory and statistical inference, specifically how duplicating observations affects OLS coe...
Machine Learning
4
0
33 people solved
Sep 18, 2025
Medium
Software EngineerCount Connected Land Regions
You are given an m x n 2D grid representing a map. Each cell is either land ('1') or water ('0'). A land region is formed by connecting adjacent land ...
Coding & Algorithms
2
0
14 people solved
Jan 27, 2026
Medium
Software EngineerMaximize protected population with one-step guard shifts
There are n cities in a line (1-indexed). You are given: - population[1..n]: population of each city - unit: a binary string of length n, where unit[i...
Coding & Algorithms
22
0
154 people solved
Jan 27, 2026
Medium
Software EngineerSolve Search Speed and String Product
You are asked to solve two coding problems. Problem 1: Find the Minimum Constant Processing Speed You are given an array piles, where piles[i] is the ...
Coding & Algorithms
0
0
5 people solved
Jan 26, 2026
Hard
Software Engineer LockedDesign Food Delivery Cart
This question evaluates a candidate's expertise in backend system design for transactional applications, covering competencies such as API design, dat...
System Design
11
0
76 people solved
Jan 26, 2026
Easy
Software Engineer AI LockedFind Feature Activation Order
This question evaluates graph-algorithms and dependency-resolution skills, including reasoning about prerequisite relationships, ordering constraints,...
Coding & Algorithms
9
0
63 people solved
Jan 26, 2026
Easy
Software Engineer LockedSolve four OA coding problems
This set of four problems evaluates core algorithmic competencies including array manipulation and counting in sorted arrays, resource-constrained opt...
Coding & Algorithms
2
0
51 people solved
Jan 26, 2026
Medium
Software EngineerDesign pickup point planning for ride-hailing
Design an algorithm and high-level system for recommending a pickup point in a ride-hailing app. A passenger requests a ride from an approximate city ...
System Design
8
0
69 people solved
May 28, 2025
Medium
Software EngineerDetermine Whether All Courses Can Be Completed
Problem There are numCourses courses numbered 0 through numCourses - 1. Each prerequisite pair [course, prerequisite] means the prerequisite must be c...
Coding & Algorithms
0
0
1 people solved
Jan 25, 2026
Medium
Software EngineerMerge Overlapping Time Windows
Problem Merge a collection of time windows so that the output contains sorted, non-overlapping half-open intervals. A window [start, end) includes sta...
Coding & Algorithms
0
0
1 people solved
Jan 25, 2026
Medium
Software EngineerChoose a Safe Polling Strategy for Delayed Records
Choose a Safe Polling Strategy for Delayed Records Data store A emits one record every 30 seconds. A is a black box. Each record eventually appears in...
Software Engineering Fundamentals
1
0
11 people solved
Jan 25, 2026
Medium
Software EngineerInternFind Top Hashtags
You are given two arrays of length n: - tweets[i]: the content of the i-th tweet as a string - timestamps[i]: the publish time of the i-th tweet as an...
Coding & Algorithms
1
0
19 people solved
Jan 25, 2026
Medium
Software EngineerDescribe surprising project learnings
Discuss a substantial project you worked on in depth. What was the most surprising finding during the project? What outcomes differed from your origin...
Behavioral & Leadership
6
0
58 people solved
Jan 25, 2026