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 EngineerCompute outer boundary of an N-ary tree
You are given the root of a rooted N-ary tree. Each node contains: - An integer value. - An ordered list of children from left to right (0 or more chi...
Coding & Algorithms
14
0
143 people solved
Oct 28, 2025
Easy
Product ManagerAnswer first-round HR questions
You are preparing for a first-round HR screening for a Product Manager role. The interviewer may ask common fit and motivation questions rather than d...
Behavioral & Leadership
4
0
81 people solved
Jul 7, 2024
Medium
Software EngineerFind k-th largest element in array
You are given an unsorted array of integers nums and a positive integer k. Design an efficient algorithm to find the k-th largest element in the array...
Coding & Algorithms
5
0
44 people solved
Oct 27, 2025
Easy
Data Scientist LockedHow would you manage precision/recall for fraud detection?
This question evaluates a candidate's competency in applied machine learning for fraud detection, covering model performance measurement, thresholding...
Machine Learning
4
0
49 people solved
Oct 26, 2025
Easy
Data ScientistSenior+Combine noisy thermometers; compute random-walk correlations
Problem 1: Estimating a true temperature from noisy thermometers Assume the true (fixed) temperature is an unknown constant \(\theta\). 1a) One thermo...
Statistics & Math
16
0
122 people solved
Oct 25, 2025
Easy
Data ScientistMatch payments to invoices by memo or amount
Scenario You are building a small reconciliation tool that matches payments to invoices. Data structures Assume you are given: - invoices: a list of i...
Coding & Algorithms
8
0
58 people solved
Oct 25, 2025
Medium
Data ScientistSenior+ LockedImplement bootstrap mean and variance
This question evaluates the ability to implement bootstrap resampling and compute descriptive statistics, testing competency in statistical estimation...
Coding & Algorithms
3
0
33 people solved
Oct 24, 2025
Medium
Software EngineerChoose best prompt for AI code debugging
When using AI tools such as ChatGPT to help debug code, which prompting approach is generally most effective? Options: - A. Directly paste the complet...
Software Engineering Fundamentals
2
0
51 people solved
Oct 24, 2025
Medium
Software EngineerTrace binary search indices in 18-element array
An ordered list of 18 elements is stored in a one-dimensional array A[1..18] (1-based indexing). You perform standard binary search for the element at...
Software Engineering Fundamentals
2
0
24 people solved
Oct 24, 2025
Medium
Software EngineerOrder SQL query logical processing steps
Consider a SQL query written in SQL-92 style: `sql SELECT foo, COUNT(foo) FROM pokes WHERE foo > 10 GROUP BY foo HAVING COUNT(foo) > 1 ORDER BY foo; `...
Software Engineering Fundamentals
3
0
57 people solved
Oct 24, 2025
Medium
Software EngineerClassify concurrency anomaly between two transactions
Two transactions T1 and T2 run concurrently and access the same data item A. Their operations (in order of time) are: 1. T1 reads A = 100. 2. T2 reads...
Software Engineering Fundamentals
2
0
38 people solved
Oct 24, 2025
Medium
Software EngineerIdentify incorrect statement about sockets
In network programming using sockets, which of the following statements is incorrect? Options: - A. Socket communication requires at least one pair of...
Software Engineering Fundamentals
2
0
29 people solved
Oct 24, 2025
Medium
Software EngineerFind minimum two’s-complement value with three ones
An 8-bit signed integer uses two's complement representation and has exactly three 1 bits and five 0 bits. What is the smallest (most negative) value ...
Software Engineering Fundamentals
3
0
31 people solved
Oct 24, 2025
Medium
Software EngineerTrace first pass of heap sort
Given the integer array [7, 6, 3, 5, 4, 1, 2], you apply heap sort to sort it in ascending order using a max-heap implementation. After building the i...
Software Engineering Fundamentals
3
0
41 people solved
Oct 24, 2025
Easy
Software Engineer AI LockedBuild an Expense Policy Rule Engine
This question evaluates implementing rule-evaluation logic, data modeling for expense records and rule representations, operator semantics, and design...
Coding & Algorithms
4
0
45 people solved
Apr 17, 2025
Medium
Data ScientistDiagnose Decline in Successful Orders
You are a Data Scientist at a food-delivery marketplace. In one geographic market, the number of successful orders has declined over the past 4 weeks....
Analytics & Experimentation
7
0
109 people solved
Oct 21, 2025
Medium
Software Engineer LockedCompute maximum perimeter among islands
This question evaluates a candidate's proficiency with grid traversal, connected-component identification, and perimeter computation in binary matrice...
Coding & Algorithms
4
0
46 people solved
Oct 21, 2025
Medium
Software Engineer LockedImplement Minesweeper click-to-reveal expansion
This question evaluates a candidate's ability to implement grid-based data structures, state management, and flood-fill style expansion logic for Mine...
Coding & Algorithms
2
0
43 people solved
Oct 21, 2025
Easy
Product AnalystExtract insights from a multi-entry funnel scorecard
Scenario You are given a scorecard for a QuickBooks-like product showing a funnel by access point (15+ entry points, highly skewed traffic). For each ...
Analytics & Experimentation
7
0
65 people solved
Oct 21, 2025
Hard
Software EngineerSolve common array/string/linked-list tasks
You may be asked one or more of the following independent coding tasks. For each task, implement an efficient algorithm and clearly state time/space c...
Coding & Algorithms
5
0
47 people solved
Oct 21, 2025