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 EngineerCount Consecutive Positive Integer Sums
Count Consecutive Positive Integer Sums Given a positive integer n, return the number of ways to write n as a sum of one or more consecutive positive ...
Coding & Algorithms
1
0
11 people solved
Apr 21, 2026
Medium
Data ScientistDescribe impact, prioritization, and stakeholder management
Describe impact, prioritization, and stakeholder management Behavioral interview (Hiring Manager) You are interviewing for a data/ML role. Answer the ...
Behavioral & Leadership
17
0
118 people solved
Jul 25, 2025
Medium
Data ScientistCompute probability of random arithmetic progression triple
You have the integers from 1 to 30 inclusive. You randomly choose 3 distinct numbers without replacement, and all 3-element subsets are equally likely...
Coding & Algorithms
1
0
26 people solved
Nov 20, 2025
Medium
Software EngineerDesign an LLM Log Parsing Workflow
Design a production workflow that uses an LLM, optionally combined with deterministic parsers, to convert heterogeneous raw log messages into structur...
ML System Design
2
0
19 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
78 people solved
Jan 28, 2026
Medium
Software EngineerImplement a Constant-Time Simple Moving Average
Implement a Constant-Time Simple Moving Average Implement a top-level operation runner for a simple moving average over a fixed-size window of the mos...
Coding & Algorithms
1
0
14 people solved
Apr 20, 2026
Medium
Data AnalystSenior+Defend the Decisions Behind a High-Impact Data Project
A reported senior-level hiring-manager screen spent substantial time on past projects and follow-up questions, although the exact wording was not pres...
Behavioral & Leadership
2
0
15 people solved
Apr 20, 2026
Medium
Software EngineerSolve 15 common interview problems
Below are fifteen independent coding problems commonly discussed in software engineering interviews. For each one, write an efficient algorithm and be...
Coding & Algorithms
8
0
85 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
23
0
155 people solved
Jan 27, 2026
Medium
Machine Learning EngineerImplement decoder-only GPT-style transformer
Goal Implement a simplified decoder-only Transformer language model (similar in spirit to GPT) for next-token prediction. The implementation should be...
Coding & Algorithms
20
0
175 people solved
Nov 18, 2025
Medium
Software Engineer LockedDesign a Versioned Key-Value Store
This question evaluates understanding of time-versioned data structures, temporal indexing, and efficient lookup strategies for storing and retrieving...
Coding & Algorithms
2
0
38 people solved
Jan 26, 2026
Medium
Software EngineerReturn a valid course completion order
You are given an integer n representing n courses labeled 0..n-1 and a list of prerequisite pairs prerequisites, where each pair [a, b] means you must...
Coding & Algorithms
12
0
100 people solved
Jan 26, 2026
Medium
Software EngineerDesign a metrics collection and alerting system
Design a metrics collection and alerting system (like a simplified monitoring platform). Functional requirements: - Collect time-series metrics from m...
System Design
2
0
57 people solved
Jan 26, 2026
Medium
Software EngineerSenior+ LockedDesign an Online Minesweeper Platform
This question evaluates competency in designing scalable, low-latency, real-time stateful systems, covering data modeling, API design, persistence, co...
System Design
4
0
47 people solved
Nov 17, 2025
Hard
Software EngineerDesign a ride-hailing platform like Uber
You are asked to design a large-scale ride-hailing platform similar to Uber. Requirements Functional requirements - Riders can: - Sign up, log in, a...
System Design
24
0
172 people solved
Nov 17, 2025
Hard
Site Reliability EngineerPlace Non-Attacking Queens
Given an integer n, return all valid configurations for placing n queens on an n x n chessboard so that no two queens attack each other. A queen attac...
Coding & Algorithms
0
0
9 people solved
Apr 19, 2026
Medium
Machine Learning EngineerImplement a Referral Revenue Tracker
Implement an in-memory revenue tracking system for customers in a referral network. Each customer has their own direct revenue. A customer may also ha...
Coding & Algorithms
7
0
78 people solved
Apr 19, 2026
Medium
Software EngineerFind mode in a trinary search tree
You are given the root of a trinary search tree where each node has up to three children: `text class Node { int val; Node left; // all values ...
Coding & Algorithms
13
0
138 people solved
Nov 16, 2025
Medium
Software EngineerCompute Maximum Area Under Adjacent Bars
You are given an array heights of n non-negative integers. Each value represents the height of a vertical bar of width 1, and the bars are placed next...
Coding & Algorithms
3
1
22 people solved
Jan 25, 2026
Medium
Software EngineerDesign a recursive distributed file crawler
Design a distributed service that crawls a large file system starting from a root path. A client should be able to call an API to start a crawl job, a...
System Design
8
0
102 people solved
Jan 25, 2026