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
Software Engineer LockedFind the Bugs in an AI-Generated URL Shortener
This question evaluates a candidate's ability to review AI-generated code for correctness, consistency, and robustness rather than write code from scr...
Software Engineering Fundamentals
48
1
328 people solved
Jun 12, 2026
Medium
Software Engineer LockedDesign a Distributed Rate Limiter
This question evaluates a candidate's ability to design distributed systems with globally consistent state across multiple servers. It tests system de...
System Design
36
0
454 people solved
Jun 23, 2026
Easy
Software EngineerSenior+Explain Why You Want This Company and Infrastructure Role
Explain Why You Want This Company and Infrastructure Role Explain why you want to join the company and why an infrastructure-focused software engineer...
Behavioral & Leadership
7
0
81 people solved
Jul 16, 2026
Medium
Software EngineerDetermine Whether an Undirected Graph Is Two-Colorable
Determine Whether an Undirected Graph Is Two-Colorable Given an undirected graph with nodes labeled 0 through n - 1, determine whether every node can ...
Coding & Algorithms
9
0
91 people solved
Jul 13, 2026
Medium
Software EngineerSenior+Discuss Challenges, Difficult Colleagues, and Multitasking
Discuss Challenges, Difficult Colleagues, and Multitasking Prepare responses to three behavioral questions. Use real examples, keep context concise, a...
Behavioral & Leadership
6
0
49 people solved
Jul 17, 2026
Medium
Machine Learning EngineerCompute entropy and implement 1-NN
You are given two short ML coding problems from a machine-learning engineer screen. Both are implementation-focused but probe whether you understand t...
Machine Learning
124
1
1186 people solved
Apr 24, 2026
Medium
Software EngineerCount Pairs of Cyclically Equivalent Integers
Count Pairs of Cyclically Equivalent Integers Two non-negative integers are cyclically equivalent when their standard decimal strings have the same le...
Coding & Algorithms
6
0
93 people solved
Jul 21, 2026
Medium
Data ScientistEvaluate a Live-Stream Group Notification Under Network Effects
Prompt A social travel app wants to add a notification: “Someone in one of your groups is live now.” The notification can increase attendance at live ...
Analytics & Experimentation
14
0
117 people solved
Jul 6, 2026
Medium
Software EngineerMake a String Palindromic with at Most K Deletions
Implement can_make_palindrome(text, k). Return whether deleting at most k characters from text can leave a palindrome. Characters that remain must pre...
Coding & Algorithms
0
0
8 people solved
Aug 8, 2026
Medium
Software EngineerSenior+Parse a Nested-List String and Compute Its Weighted Sum
Parse a Nested-List String and Compute Its Weighted Sum Problem You are given a string representation of a nested list containing non-negative integer...
Coding & Algorithms
0
0
9 people solved
Aug 6, 2026
Easy
Machine Learning EngineerExplain Why a Geometric Mean Can Exceed Its Median
Explain Why a Geometric Mean Can Exceed Its Median Let X follow the geometric distribution counting the number of independent Bernoulli trials up to a...
Statistics & Math
0
0
7 people solved
Aug 10, 2026
Medium
Frontend EngineerDesign a Performant Frontend News Feed
Design a Performant Frontend News Feed Design a React news feed with rich text, mentions and hashtag hover cards, pagination, offline behavior, virtua...
System Design
2
0
17 people solved
Jul 27, 2026
Medium
Data ScientistSenior+Diagnose a One-Day Drop in Successful Deliveries
Prompt On one specific day, the number of successful deliveries in a large metropolitan market drops sharply. The alert is about the count, not the su...
Analytics & Experimentation
13
0
189 people solved
Jul 1, 2026
Medium
Software EngineerRepresent and Evaluate Boolean Predicate Expressions
Design a data structure to represent and evaluate predicates such as abc > 5 and (test < 8 or team > 9). Support comparisons, and, or, parentheses, an...
Software Engineering Fundamentals
12
0
129 people solved
Jul 2, 2026
Medium
Software EngineerCount Completed Jobs in a Serial Single-Worker Pipeline
Count Completed Jobs in a Serial Single-Worker Pipeline An automation pipeline contains stages that execute in order. Each stage is represented as [nu...
Coding & Algorithms
11
0
96 people solved
Jul 13, 2026
Hard
Software EngineerDesign a Configurable Order Validator with DAG Dependencies
Design a Configurable Order Validator with DAG Dependencies Design an OrderValidator whose rules check prohibited items, price ranges, and future cond...
Software Engineering Fundamentals
1
0
13 people solved
Jul 31, 2026
Hard
Software EngineerReason About Duplicate Data and Scaling in Spark
Reason About Duplicate Data and Scaling in Spark In a technical experience discussion, explain how you would identify and handle duplicate data in a S...
Software Engineering Fundamentals
1
0
16 people solved
Jul 28, 2026
Medium
Software Engineer LockedDesign an Audit Logs Service
This question evaluates the ability to design a scalable, multi-tenant audit logging system, covering event storage, tamper-evident retention, and eff...
System Design
19
0
225 people solved
Jun 17, 2026
Medium
Data ScientistFind Each User's Earliest Seven-Day Activity Streak
Find Each User's Earliest Seven-Day Activity Streak Write one PostgreSQL SELECT statement or CTE query. Do not create, alter, or modify tables. Schema...
Data Manipulation (SQL/Python)
3
0
11 people solved
Aug 3, 2026
Medium
Software EngineerMaximal Square and Longest Increasing Subsequence
Problem Implement analyze(matrix, nums) and return [max_square_area, lis_length]. Part A: Maximal Square matrix is a rectangular grid containing only ...
Coding & Algorithms
3
0
59 people solved
Jul 9, 2026