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
Software EngineerAnswer core CS fundamentals concisely
Answer core CS fundamentals concisely Answer core CS fundamentals: differentiate processes vs. threads; describe how a thread pool works (task queue, ...
Software Engineering Fundamentals
8
0
58 people solved
Jul 17, 2025
Medium
Software EngineerImplement and compare key design patterns
Implement and compare key design patterns Implement Core GoF Patterns in Java and Discuss Trade-offs Context You are designing a small Java library an...
System Design
7
0
52 people solved
Jul 17, 2025
Medium
Software EngineerImplement tiered shipping calculator
Implement tiered shipping calculator Implement in JavaScript a shipping-cost calculator with three progressively richer pricing models based on a conf...
Coding & Algorithms
4
0
37 people solved
Jul 17, 2025
Medium
Data Scientist LockedApproximate a percentile from buckets
Estimate a percentile from histogram bucket summaries by finding the cumulative-count bucket, avoiding midpoint bias, interpolating within the bucket ...
Statistics & Math
4
0
45 people solved
Mar 9, 2025
Hard
Product ManagerInternExplain your fit and motivation
Explain your fit and motivation In a TikTok internship interview, a candidate may be asked several behavioral questions such as: 1. What experience do...
Behavioral & Leadership
11
0
103 people solved
Jul 16, 2025
Hard
Software EngineerImplement a React CRUD Table
Implement a React CRUD Table React CRUD Data Table — Build and Explain Context Design and implement a React application that renders a data table with...
Software Engineering Fundamentals
16
0
117 people solved
Jul 16, 2025
Medium
Software EngineerSolve two DS&A optimization problems
Problem 1 — Maximize alternating-sum over four array partitions: Given an integer array arr[1..n] (1-based). Choose indices a, b, c with 1 ≤ a ≤ b ≤ c...
Coding & Algorithms
8
0
132 people solved
Jul 16, 2025
Medium
Machine Learning EngineerFind shortest word transformation with caching
Find shortest word transformation with caching You are given a start word and an end word of equal length, and a dictionary of valid words. In one mov...
Coding & Algorithms
10
0
96 people solved
Jul 16, 2025
Medium
Software EngineerDescribe your recent project and scope
Describe your recent project and scope Behavioral Prompt: Walk Through Your Most Recent Project Context: Technical screen for a Software Engineer. Pro...
Behavioral & Leadership
10
0
72 people solved
Jul 16, 2025
Medium
Software EngineerDesign a duplicate-file removal algorithm
Design a duplicate-file removal algorithm Your filesystem contains millions of photos. Duplicates are strictly byte-identical files (no ML/CV similari...
Coding & Algorithms
10
0
120 people solved
Jul 16, 2025
Medium
Software EngineerDiscuss Airbnb motivations, hosting, feedback, community, challenges
Discuss Airbnb motivations, hosting, feedback, community, challenges Airbnb Software Engineer Onsite — Behavioral & Leadership You are interviewing fo...
Behavioral & Leadership
10
0
88 people solved
Jul 16, 2025
Medium
Software EngineerNew GradDesign KV store with sliding-window average QPS
Problem Design an in-memory key–value store that supports mutation operations and can report the average QPS (queries per second) over a recent time w...
Coding & Algorithms
27
0
363 people solved
Dec 17, 2025
Medium
Software EngineerSolve array duplicate flags and binary swaps
Problem 1: Flag duplicates on the left and right You are given an integer array nums of length n. For each index i, determine: 1. Left-duplicate: whet...
Coding & Algorithms
26
1
187 people solved
Dec 17, 2025
Medium
Software EngineerSenior+Describe a recent innovation you delivered
Behavioral question: “Tell me about a recent innovation you delivered.” Include: - What problem/opportunity you identified - What was novel about your...
Behavioral & Leadership
2
0
33 people solved
Dec 17, 2025
Hard
Software EngineerDesign overload protection with load shedding
Design overload protection with load shedding Design: Maintain p99 Latency SLOs During Sudden Traffic Spikes Context You are designing a user-facing, ...
System Design
4
0
47 people solved
Jul 15, 2025
Hard
Software EngineerExplain Kafka architecture and reliability semantics
Explain Kafka architecture and reliability semantics Kafka Architecture and End-to-End Semantics You are asked to explain Kafka's core architecture an...
System Design
5
0
57 people solved
Jul 15, 2025
Hard
Software EngineerDesign an e-commerce category page
Design an e-commerce category page System Design: Category Page with Facets, Sorting, Pagination, SEO, Caching, Personalization, and Real-Time Updates...
System Design
4
0
79 people solved
Jul 15, 2025
Hard
Software EngineerOptimize attention for long sequences
Optimize attention for long sequences System Design: Efficient Attention for Long Sequences Context You are designing or optimizing sequence models th...
ML System Design
4
0
44 people solved
Jul 15, 2025
Hard
Software EngineerExplain attention and Transformers
Explain attention and Transformers Scaled Dot-Product Self-Attention, Transformer Architecture, and BERT vs GPT You are interviewing for a software en...
Machine Learning
7
0
71 people solved
Jul 15, 2025
Medium
Software EngineerExplain core ML fundamentals
Explain core ML fundamentals Machine Learning Fundamentals: Regularization, Losses, PCA, and Random Forests Assume standard supervised learning with l...
Machine Learning
6
0
47 people solved
Jul 15, 2025