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
Site Reliability EngineerSenior+Validate abbreviations and brackets
The coding round included two short implementation problems: 1. Abbreviation validation Given a lowercase word word and a string abbr, determine wheth...
Coding & Algorithms
1
0
31 people solved
Apr 12, 2026
Medium
Data ScientistHow would you test a price increase?
You are a data scientist at a B2C AI video editing software company (subscription-based, with a free trial and paid tiers). Product leadership is cons...
Analytics & Experimentation
5
0
86 people solved
Dec 20, 2025
Hard
Software EngineerIdentify a Target Word with Repeated Minimax Guesses
Identify a Target Word with Repeated Minimax Guesses A hidden target is guaranteed to be one of the supplied words. You may repeatedly submit any word...
Coding & Algorithms
0
0
4 people solved
Jun 28, 2026
Hard
Software EngineerMeasure Meeting Coverage and Required Rooms
Measure Meeting Coverage and Required Rooms Given meeting intervals, compute both the total amount of time spent in at least one meeting and the minim...
Coding & Algorithms
0
0
9 people solved
Jun 28, 2026
Medium
Software EngineerSenior+Group Anagrams
Group Anagrams Given an array of strings words, group together all strings that are anagrams of one another and return the groups. Two strings are ana...
Coding & Algorithms
1
0
11 people solved
Jun 28, 2026
Hard
Software EngineerDesign camera access-control service
Design camera access-control service Design an Access-Control Service (Users, Cameras, Nested Groups) Context You are building a multi-tenant access-c...
System Design
20
0
165 people solved
Aug 8, 2025
Medium
Data Scientist LockedRun EDA and train models while preventing overfitting
This question evaluates proficiency in exploratory data analysis, feature preprocessing, baseline linear regression and small neural network training,...
Machine Learning
4
0
53 people solved
Jan 14, 2026
Hard
Software EngineerFind shortest path on infinite grid
You are given an infinite 2D grid with integer coordinates. From a cell (x, y) you may move in 4 directions (North/South/East/West) by 1 cell per move...
Coding & Algorithms
52
0
412 people solved
Mar 11, 2026
Medium
Machine Learning EngineerMachine Learning Fundamentals: Tree Models, Training, Evaluation, and Embeddings
Machine Learning Fundamentals: Tree Models, Training, Evaluation, and Embeddings This is a concept-check round for an early-career ML engineer. The go...
Machine Learning
1
0
17 people solved
Feb 10, 2026
Medium
Software EngineerBuild a React color multi-select dropdown UI
Implement a React UI that lets users multi-select colors from a dropdown and view details. You are given a JavaScript object where each key is a color...
Software Engineering Fundamentals
4
0
83 people solved
Feb 10, 2026
Easy
Data Scientist LockedUse confusion matrix to choose model metric
This question evaluates understanding of confusion matrix components, mapping Type I/Type II errors to false positives/negatives, selection and interp...
Statistics & Math
13
0
95 people solved
Feb 9, 2026
Medium
Software EngineerCollaborate with Someone Whose Working Style Differs
Prompt Tell me about a time you worked closely with someone whose working style differed substantially from yours. Explain the friction the difference...
Behavioral & Leadership
0
0
3 people solved
Apr 11, 2026
Medium
Software EngineerHelp a Colleague Resolve a Difficult Problem
Prompt Tell me about a time you helped a colleague resolve a difficult problem. Explain how you learned what they needed, how you contributed without ...
Behavioral & Leadership
0
0
3 people solved
Apr 11, 2026
Medium
Software EngineerReturn a Binary Tree in Zigzag Level Order
Implement zigzag_level_order(values) for a binary tree serialized as a zero-based heap array. For an existing node at index i, its children are at 2 ...
Coding & Algorithms
0
0
3 people solved
Apr 11, 2026
Medium
Software EngineerImplement an O(1) LRU Cache
Implement run_lru(capacity, operations) to model a least-recently-used cache with integer keys and values. Each operation is a three-integer row: - [0...
Coding & Algorithms
0
0
3 people solved
Apr 11, 2026
Medium
Software EngineerTraverse a Matrix in Clockwise Spiral Order
Implement spiral_order(matrix) for a rectangular matrix. Return all values in clockwise spiral order, beginning at the top-left corner and first movin...
Coding & Algorithms
0
0
3 people solved
Apr 11, 2026
Medium
Data EngineerSenior+Design Transaction Data Quality Checks
You own data quality for the same credit-card transaction dataset. transactions | column | type | description | |---|---|---| | transaction_id | integ...
Software Engineering Fundamentals
3
0
63 people solved
Apr 11, 2026
Easy
Software Engineer LockedCompute Nearest Destination Distances
This question evaluates graph and grid traversal concepts, specifically multi-source shortest-path computation on a grid and handling special-cell con...
Coding & Algorithms
3
0
41 people solved
Apr 11, 2026
Medium
Software Engineer LockedDesign a Multi-Tenant Online IDE
This question evaluates system design skills for multi-tenant platform architecture, specifically assessing competency in tenancy isolation, identity ...
System Design
14
0
278 people solved
Apr 11, 2026
Medium
Software EngineerNew GradDesign Broadcast Scheduling APIs
Design a broadcast messaging service for companies. Requirements: - Each company has a set of subscribers. - A client can schedule a message to be bro...
System Design
20
0
142 people solved
Apr 11, 2026