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
Machine Learning Engineer LockedClean OCR data and build an LLM dataset
This question evaluates competency in OCR data cleaning and normalization, dataset engineering for LLM fine-tuning, quality filtering, and evaluation ...
Machine Learning
7
0
103 people solved
Feb 11, 2026
Medium
Software Engineer LockedImplement a single-thread task scheduler API
This question evaluates understanding of task scheduling, timing semantics, deterministic ordering, single-thread concurrency control, and data struct...
Coding & Algorithms
4
0
30 people solved
Feb 11, 2026
Medium
Software Engineer LockedMerge intervals and design rating APIs
This question evaluates algorithmic problem-solving for interval manipulation and stateful data-structure design for maintaining and ordering agent av...
Coding & Algorithms
8
0
79 people solved
Feb 11, 2026
Medium
Software EngineerNew GradImplement a random fixed-size load balancer
Problem: Build a simple load balancer Implement a minimal in-memory load balancer that routes each incoming request to one backend node chosen uniform...
Coding & Algorithms
25
0
196 people solved
Feb 11, 2026
Medium
Software EngineerDesign a feedback-text personalization data system
System/ML design scenario: personalize using user feedback text You are building an embeddings + personalization pipeline for a consumer product (e.g....
ML System Design
4
0
34 people solved
Feb 11, 2026
Hard
Software Engineer LockedImplement short algorithms on logs, grids, and strings
This multi-part Coding & Algorithms question evaluates algorithmic problem-solving skills and mastery of core competencies including temporal window r...
Coding & Algorithms
18
0
185 people solved
Feb 11, 2026
Hard
Software Engineer LockedFind minimum threshold enabling grid path
This question evaluates a candidate's understanding of grid pathfinding, reachability under constraints, and algorithmic optimization, focusing on ski...
Coding & Algorithms
11
0
156 people solved
Feb 11, 2026
Hard
Data ScientistAnalyze survey with gender imbalance
Analyze survey with gender imbalance Scenario You ran a user survey to measure satisfaction with a new product feature. Each respondent reports: - gen...
Statistics & Math
16
0
123 people solved
Aug 2, 2025
Medium
Software EngineerDiagnose failures via SSH and large logs
Diagnose failures via SSH and large logs Troubleshooting Large Logs Over SSH and Designing Centralized Logging Context You are on-call for a productio...
System Design
11
0
132 people solved
Aug 1, 2025
Medium
Data ScientistDesign streaming stats with sliding window
Design streaming stats with sliding window Design a data structure that ingests an integer stream and supports online queries for maximum, mean, and m...
Coding & Algorithms
5
0
53 people solved
Aug 1, 2025
Medium
Software EngineerFind the Longest Palindromic Substring in Linear Time
Find the Longest Palindromic Substring in Linear Time Implement longest_palindrome(s) and return the longest contiguous palindromic substring. If seve...
Coding & Algorithms
0
0
2 people solved
Apr 1, 2026
Medium
Software EngineerSenior+ LockedDesign an Extensible Python File Parser
This question evaluates skills in designing extensible, modular file-parsing frameworks in Python, covering interface and API design, format detection...
Software Engineering Fundamentals
6
0
81 people solved
Apr 1, 2026
Medium
Software Engineer LockedImplement a Batch Image Processor
This question evaluates a candidate's competency in image processing operations and parallel/concurrent programming, covering basic transformations (g...
Coding & Algorithms
11
0
83 people solved
Apr 1, 2026
Medium
Software Engineer LockedImplement fast power and k-palindrome
This question evaluates numerical algorithm design and string algorithm skills, focusing on efficient exponentiation with negative exponents and deter...
Coding & Algorithms
6
0
46 people solved
Apr 1, 2026
Hard
Machine Learning EngineerComplete decision tree and gradient descent functions
You are given partially implemented code and must complete key functions. Implement the missing parts with correct logic and reasonable efficiency. Ta...
Coding & Algorithms
13
0
104 people solved
Oct 10, 2025
Medium
Machine Learning EngineerWeighted Random Sampling by Index
Weighted Random Sampling by Index You are given an array of positive integer weights weights, where weights[i] is the weight assigned to index i. Impl...
Coding & Algorithms
1
0
9 people solved
Feb 10, 2026
Hard
Machine Learning Engineer LockedExplain Core ML Concepts
This question evaluates understanding of core supervised learning concepts—comparing linear and logistic regression, interpreting the bias–variance tr...
Machine Learning
8
0
92 people solved
Feb 10, 2026
Hard
Software Engineer LockedImplement an Alternating Tic-Tac-Toe Game
This question evaluates a candidate's ability to implement state management, alternating turn logic, input validation, board representation, game outc...
Coding & Algorithms
2
0
16 people solved
May 30, 2026
Medium
Machine Learning Engineer LockedDetermine if all courses can be completed
This question evaluates graph-theoretic dependency modeling and cycle-detection competency, measuring the ability to represent course prerequisites as...
Coding & Algorithms
2
0
17 people solved
May 30, 2026
Medium
Software Engineer LockedImplement Employee Management and Expression Evaluation
This question evaluates competency in designing and maintaining hierarchical data structures and in parsing and evaluating nested function-style arith...
Coding & Algorithms
2
1
30 people solved
May 30, 2026