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
Easy
Data ScientistSenior+Describe a challenging project
You are interviewing for an L5 Data Scientist role. Answer the following behavioral questions in a way that demonstrates Deliver Results: 1. Tell me a...
Behavioral & Leadership
7
0
69 people solved
Jan 12, 2026
Medium
Machine Learning EngineerSenior+Build a concurrent site crawler
Implement a small crawler in Python for a single target website. Requirements: - Input: a start URL, a maximum crawl depth, and an output CSV path. - ...
Coding & Algorithms
10
0
94 people solved
Jan 12, 2026
Medium
Software EngineerSenior+ LockedDesign a large-scale distributed rate limiter
This question evaluates system design competency in distributed systems, focusing on scalability, multi-tenant isolation, rate-limiting algorithms, co...
System Design
16
0
169 people solved
Jan 12, 2026
Medium
Software Engineer LockedFind Shortest Unique Prefixes
This question evaluates string-processing skills and understanding of data structures for prefix management (e.g., tries), along with algorithmic effi...
Coding & Algorithms
2
0
15 people solved
Jun 18, 2026
Hard
Software EngineerImplement Queue Operations Using Two Stacks
Implement Queue Operations Using Two Stacks Process a sequence of queue operations using exactly two LIFO stacks as the queue's internal data structur...
Coding & Algorithms
1
0
23 people solved
May 1, 2026
Medium
Software EngineerGenerate Color Feedback for a Word Guess
Generate Color Feedback for a Word Guess Given an answer string and a guess of the same length, produce one color for each guessed character: - "green...
Coding & Algorithms
0
0
5 people solved
May 1, 2026
Medium
Software Engineer LockedFormat Words into Fixed-Width Lines
This question evaluates proficiency in string manipulation, greedy line-packing algorithms, and attention to implementation details such as spacing di...
Coding & Algorithms
3
0
28 people solved
May 1, 2026
Medium
Data ScientistHow would you choose a classification threshold?
You trained a binary classifier that outputs a probability score p(y=1|x). You must choose a decision threshold t to convert probabilities into class ...
Machine Learning
8
0
62 people solved
Nov 12, 2025
Easy
Software EngineerExplain CI/CD, Kubernetes delivery, and troubleshooting
You are interviewing for a DevOps/SRE-style role. Answer the following practical questions: 1) What is CI/CD? Which CI/CD tools have you used and why?...
Software Engineering Fundamentals
6
0
60 people solved
Oct 15, 2025
Medium
Software EngineerExplain career goals and cultural alignment
Explain career goals and cultural alignment Behavioral: Long‑Term Goals and Mission Alignment (Software Engineer, Onsite) Prompt You are interviewing ...
Behavioral & Leadership
23
0
157 people solved
Jul 29, 2025
Medium
Frontend Engineer LockedExplain React classes, lifecycle, and hooks
This question evaluates understanding of React class and function components, lifecycle phases, Hooks (including state and effect handling), code reus...
Software Engineering Fundamentals
3
0
56 people solved
Jan 11, 2026
Medium
Software EngineerBuild a bigram next-word predictor with weighted sampling
You are given a training set of token sequences (sentences), for example: ` [["a","b","c"], ["a","s","d"]] ` 1) Train a simple next-word prediction m...
Machine Learning
7
0
109 people solved
Jan 11, 2026
Hard
Software Engineer LockedFind Path Between Fibonacci Tree Nodes
This question evaluates a candidate's ability to reason about recursive tree structures, map preorder indices to positions in a recursively defined Fi...
Coding & Algorithms
9
0
78 people solved
Feb 13, 2026
Medium
Software EngineerMaximize coins collected by tokens jumping +3
You are given a single-player board game represented by a string board of length N (1 ≤ N ≤ 100). Each character is one of: - '.': empty cell - 'T': a...
Coding & Algorithms
5
0
57 people solved
Feb 13, 2026
Medium
Data ScientistAssess card rewards profitability and break-even spend
Credit Card Unit Economics and Break-even Spend Context A bank is evaluating launching a credit card that pays 1% rewards on all purchases. Consider p...
Analytics & Experimentation
5
0
73 people solved
Oct 13, 2025
Hard
Data ScientistDesign long-tail search evaluation under label budget
Estimating ΔNDCG@10 With Limited Labels Under a Heavy-Tailed Query Mix You serve ~100M queries/day. Query frequencies follow a Pareto distribution wit...
Analytics & Experimentation
4
0
74 people solved
Oct 13, 2025
Medium
Data ScientistClarify status, education, and multi-role strategy
HR Screen: Candidate Information and Minicase Readiness (Data Scientist) 1) U.S. Work Authorization Provide your current employment/visa status and wo...
Behavioral & Leadership
9
0
69 people solved
Oct 13, 2025
Medium
Data ScientistBuild referral chains and detect cycles
You are given a directed referral graph where each user may have at most one referrer. Input file 'referrals.csv' has columns: user_id (INT), referred...
Coding & Algorithms
11
0
92 people solved
Oct 13, 2025
Medium
Data ScientistNavigate conflicting signals and ambiguous expectations
Behavioral & Leadership Onsite: Changing Expectations, Stakeholder Pushback, Preparation Strategy, and Learning Plan Context You are interviewing for ...
Behavioral & Leadership
16
0
169 people solved
Oct 13, 2025
Medium
Data ScientistDetail NLP preprocessing and n‑gram choices
Describe your text preprocessing pipeline given the source modality: typed text, scanned/handwritten OCR, or speech-to-text. Specify language handling...
Machine Learning
9
0
78 people solved
Oct 13, 2025