Interview Questions
Practice the exact questions companies are asking right now.
Questions
9.8k
Companies
511
Updated
08.16.2026
9.8k Questions 511 Companies08.16.2026
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
Machine Learning EngineerDiagnose Strong Validation and Weak Production Performance
Diagnose Strong Validation and Weak Production Performance You are given a training repository for a model whose validation metric looks strong while ...
Machine Learning
9
0
66 people solved
Jul 8, 2026
Hard
Software EngineerDesign a Real-Time Top-K Ranking System
Design an object-oriented, real-time Top-K ranking system. The system continuously receives score updates for a large set of entities — for example us...
Software Engineering Fundamentals
419
2
5486 people solved
May 2, 2026
Easy
Data ScientistInternSolve probability and game-theory puzzles
You are interviewing for a quant trading internship. Work through the following probability and game-theory puzzles. There is no need to answer instan...
Statistics & Math
266
0
1944 people solved
Dec 1, 2025
Medium
Software EngineerTrack the Contiguous Package Frontier and Missing IDs
Track the Contiguous Package Frontier and Missing IDs Design a PackageTracker for non-negative package IDs that are expected to begin at 0 but may arr...
Coding & Algorithms
1
0
11 people solved
Jul 27, 2026
Medium
Software EngineerNew Grad LockedSearch a Pattern Across the Leaf Text of a Binary Tree
Search for a pattern across the left-to-right concatenation of binary-tree leaf strings, including matches that cross leaf boundaries. This algorithm ...
Coding & Algorithms
19
1
160 people solved
Jun 17, 2026
Medium
Frontend EngineerDesign a Collaborative Playlist Editor
Design a Collaborative Playlist Editor Design the data model and APIs for a playlist application. Authorized collaborators can add a song, remove a pl...
System Design
17
0
135 people solved
Jul 3, 2026
Medium
Software EngineerBehavioral Round: Judgment, Prioritization, and Influence
Behavioral Round: Judgment, Prioritization, and Influence This was the behavioral interview. You will be asked three questions about judgment, reprior...
Behavioral & Leadership
21
0
155 people solved
Jun 30, 2026
Hard
Software EngineerWrap a Fixed-Chunk Stream Reader with Arbitrary-Length Reads
You are given a low-level stream API that reads exactly 4096 bytes at a time. Design a wrapper API read(n) that returns any requested number of bytes,...
Software Engineering Fundamentals
4
0
78 people solved
Jul 2, 2026
Medium
Software EngineerBanking System Simulation
Banking System Simulation You are building an in-memory banking system that is driven by a time-ordered stream of operations. Implement the system so ...
Coding & Algorithms
7
0
64 people solved
Jun 23, 2026
Hard
Software EngineerManage Team Growth, Performance, and Composition
Manage Team Growth, Performance, and Composition You manage an engineering team whose size and responsibilities are changing. Explain your management ...
Behavioral & Leadership
0
0
8 people solved
Aug 1, 2026
Medium
Software EngineerDesign Video Generation Orchestration
Design a scalable system to orchestrate AI video generation (think Sora-style text-to-video). Users submit text prompts to generate videos. For each s...
System Design
33
0
467 people solved
Jun 12, 2026
Medium
Software EngineerNew Grad LockedMatch Tagged Problems to Skilled Programmers at Scale
Model tagged problems and skilled programmers as a bipartite matching problem, then extend the design to distributed and streaming workloads. The exer...
System Design
6
0
65 people solved
Jun 17, 2026
Medium
Software EngineerMinimize Direction Violations in a Directed Road Network
Minimize Direction Violations in a Directed Road Network There are n nodes numbered from 0 through n - 1. Every input edge [u, v] has an original dire...
Coding & Algorithms
49
4
332 people solved
Jul 5, 2026
Medium
Software EngineerReturn a Shortest Path Through a Binary Grid
Implement shortest_grid_path(grid) for a square binary matrix. A cell containing 0 is open and a cell containing 1 is blocked. Start at the top-left c...
Coding & Algorithms
0
0
5 people solved
Aug 8, 2026
Medium
Data ScientistMaintain a Fixed-Window Rolling Mean in Constant Time
Maintain a Fixed-Window Rolling Mean in Constant Time Implement rolling_means(values, window) for signed integer values, returning a double-precision ...
Coding & Algorithms
0
0
5 people solved
Aug 8, 2026
Medium
Software EngineerPlan Eviction and Cleanup for a Production Cache
Plan Eviction and Cleanup for a Production Cache A process-local timed cache is correct for basic puts and gets, but it can still exhaust memory, reta...
Software Engineering Fundamentals
18
0
132 people solved
Jul 11, 2026
Medium
Software EngineerChoose Mean or Median for Trading Profit Metrics
A trading firm observes daily profit values X_1 through X_n and wants a metric for average performance. In an interview, you must choose between mean ...
Statistics & Math
11
1
135 people solved
Jul 2, 2026
Medium
Software EngineerDesign a Streaming TLV Message Reassembler in C
Design a Streaming TLV Message Reassembler in C Design a C implementation that consumes a stream of 32-bit packets belonging to multiple messages. The...
Software Engineering Fundamentals
0
0
3 people solved
Aug 14, 2026
Medium
Software EngineerDesign a Job Scheduler That Can Scale by 100 Times
Design a job scheduler that initially serves a small workload but must later handle 100 times as many jobs. Clients submit one-time jobs with executio...
System Design
0
0
7 people solved
Aug 3, 2026
Hard
Software Engineer LockedDesign a Played-By Summary System
This system design question evaluates a candidate's ability to decompose a personalized social-proof feature into distinct distributed systems problem...
System Design
17
0
153 people solved
Jun 17, 2026