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
Data ScientistProbability That One Fair Die Beats Another
Probability That One Fair Die Beats Another Two fair dice, A and B, are represented by integer arrays. Each array element is one physical face, so dup...
Coding & Algorithms
0
0
8 people solved
Apr 4, 2026
Medium
Software Engineer LockedRotate a Matrix In Place
This question evaluates proficiency in in-place matrix and array manipulation, understanding of spatial transformations, and consideration of space an...
Coding & Algorithms
4
0
58 people solved
Apr 4, 2026
Medium
Software EngineerCount subarrays with odd zero count
Count subarrays with odd zero count Given an integer array nums, return how many contiguous subarrays contain an odd number of zeros. Provide an O(n) ...
Coding & Algorithms
5
0
88 people solved
Aug 8, 2025
Medium
Software EngineerImplement in-memory KV store with serialization
Implement an in-memory key-value store in Python that supports setting and retrieving values and can serialize and deserialize the entire store. Defin...
Coding & Algorithms
40
0
364 people solved
Aug 8, 2025
Hard
Data ScientistHow would you design Shop-ad ranking?
Suppose the previous experiment shows that, in some contexts, users are more likely to convert when shown an ad that leads to an in-app Shop rather th...
Machine Learning
7
0
50 people solved
Oct 16, 2025
Hard
Software EngineerSenior+Return the Vertical Traversal of a Binary Tree
Return the Vertical Traversal of a Binary Tree Problem Implement verticalTraversal(nodeValues, left, right, root) -> columns. Node root is at row 0, c...
Coding & Algorithms
1
0
12 people solved
Jan 1, 2026
Medium
Software EngineerMaximum Profit from Multi-Stock Trading Records
Maximum Profit from Multi-Stock Trading Records You are given a list of stock price records collected from a trading feed. Each record is a triple: - ...
Coding & Algorithms
0
0
11 people solved
Jan 1, 2026
Medium
Software EngineerSenior+Design set with O(1) random access
Design a data structure ("FancySet") that stores unique integers and supports the following operations, each in average O(1) time: - add(x): Insert va...
Coding & Algorithms
12
0
146 people solved
Jan 1, 2026
Medium
Software Engineer LockedFind top-k lottery winners by spending
This question evaluates skills in selection and ordering of numeric-keyed records, covering concepts such as order statistics, deterministic tie-break...
Coding & Algorithms
8
0
65 people solved
Jan 1, 2026
Medium
Software EngineerRecommend movies by shared ratings
Recommend movies by shared ratings Write a function recommendations(user, ratings) that returns a list of movies to recommend to the given user based ...
Coding & Algorithms
7
0
74 people solved
Aug 7, 2025
Medium
Software EngineerShare examples of impact and simplicity
Share examples of impact and simplicity Behavioral prompt: Exceeding customer expectations and simplifying complex problems Context You are in a softw...
Behavioral & Leadership
6
0
43 people solved
Aug 7, 2025
Medium
Software EngineerDesign a rolling event tracker with ranges
Design a rolling event tracker that supports time-based queries. Implement a data structure with: ( 1) record(timestamp): record one event at integer ...
Coding & Algorithms
16
0
139 people solved
Aug 7, 2025
Medium
Software EngineerExplain AtomicInteger and ABA problem
Explain AtomicInteger and ABA problem How does AtomicInteger implement atomic updates (e.g., via CAS using Unsafe or VarHandles)? What is the ABA prob...
Coding & Algorithms
4
0
56 people solved
Aug 7, 2025
Medium
Software EngineerDesign a mini banking system
Design a mini banking system In-Memory Banking System — Design and Implementation You are to design and implement an in-memory banking system that sup...
System Design
10
0
90 people solved
Aug 7, 2025
Medium
Software EngineerDebug round-robin, DashMap, and simple cache
You are given a service that routes requests to a list of nodes, each marked as either available or unavailable. The pickNode() function is intended t...
Coding & Algorithms
98
0
754 people solved
Aug 7, 2025
Medium
Software EngineerCompute minimum time with task cooldowns
You are given a multiset of task types represented by uppercase letters (e.g., A, A, A, B, B, C). Each task takes exactly 1 time unit to execute. Runn...
Coding & Algorithms
34
0
286 people solved
Aug 7, 2025
Medium
Software EngineerDescribe teamwork and stress handling
Describe teamwork and stress handling This Meta Software Engineer behavioral question asks you to demonstrate, with concrete examples, how you collabo...
Behavioral & Leadership
7
0
76 people solved
Aug 7, 2025
Medium
Software EngineerAnalyze and debug Python utilities
Analyze and debug Python utilities You are given a snippet where a Python helper class repeatedly reads from an HTTP response stream and writes output...
Data Manipulation (SQL/Python)
11
0
103 people solved
Aug 7, 2025
Hard
Software EngineerExplain your project system design
Explain your project system design System Design Walkthrough: Project You Owned Context: In an onsite system design interview for a Software Engineer ...
System Design
4
0
65 people solved
Aug 7, 2025
Hard
Software EngineerFind duplicate files and apply image operations
Part A — Find duplicate files by content You are given a list of directory records. Each record is a string describing a directory path followed by on...
Coding & Algorithms
116
0
774 people solved
Oct 15, 2025