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
Data EngineerGenerate All Valid Combinations of Balanced Parentheses
Generate All Valid Combinations of Balanced Parentheses Given an integer n representing the number of pairs of parentheses, generate all distinct stri...
Coding & Algorithms
0
0
10 people solved
Mar 27, 2026
Hard
Software EngineerFind and Merge Camera Alert Intervals
You are given surveillance camera readings as time-series data. Each reading is a pair (timestamp, value), sorted by timestamp. A camera is considered...
Coding & Algorithms
3
0
28 people solved
Mar 26, 2026
Medium
Software Engineer LockedImplement a Flappy Bird Jump Agent
This question evaluates discrete-time physics simulation, real-time decision-making under constraints, collision detection, and deterministic control-...
Coding & Algorithms
4
0
52 people solved
Mar 25, 2026
Medium
Machine Learning Engineer LockedImplement Layer History and Grid Counting
This question evaluates a candidate's proficiency in mutable state management and reversible operations through implementing an undo/redo layer editor...
Coding & Algorithms
29
0
210 people solved
Mar 25, 2026
Medium
Software EngineerFixed-Width Text Display
Fixed-Width Text Display You are building a text display that renders a sequence of words inside a viewport of a fixed character width maxWidth. The d...
Coding & Algorithms
0
0
5 people solved
Mar 24, 2026
Medium
Data Scientist LockedCount heavy callers in 7 days
This question evaluates proficiency in SQL-based data manipulation and analytics, covering joins between user and call records, aggregation and distin...
Data Manipulation (SQL/Python)
7
0
66 people solved
Mar 24, 2026
Medium
Data ScientistNew Grad LockedImplement FizzBuzz
This question evaluates basic programming and algorithmic reasoning, including control flow, modular arithmetic, string handling, and the ability to a...
Coding & Algorithms
4
0
64 people solved
Mar 22, 2026
Medium
Software EngineerSolve Four Online Assessment Problems
Complete the following four independent coding tasks. For each task, write a function that returns the requested result. 1. Find the best value index ...
Coding & Algorithms
10
0
84 people solved
Mar 19, 2026
Medium
Software EngineerImplement an In-Memory File System
Design an in-memory file system that supports file management, search, user ownership, capacity limits, copying, and compression. Each file has a uniq...
Coding & Algorithms
4
0
32 people solved
Mar 19, 2026
Medium
Product Analyst LockedWrite SQL for call metrics
This question evaluates a candidate's competency in SQL-based data manipulation and analytics, specifically aggregations, JOINs across relational tabl...
Data Manipulation (SQL/Python)
4
0
47 people solved
Mar 19, 2026
Hard
Software Engineer LockedSolve two online assessment problems
This two-part prompt evaluates algorithmic problem-solving skills: the first problem tests optimization under index-based movement and number-theoreti...
Coding & Algorithms
12
0
122 people solved
Mar 19, 2026
Medium
Software EngineerMake a Parentheses String Valid
Given a string s containing lowercase English letters and the characters '(' and ')', remove the minimum number of parentheses so that the resulting s...
Coding & Algorithms
8
0
91 people solved
Mar 19, 2026
Medium
Software EngineerCount distinct palindromic subsequences
Given a string s consisting of lowercase English letters, compute how many distinct palindromic subsequence strings of lengths 2, 3, and 4 can be form...
Coding & Algorithms
6
0
48 people solved
Mar 19, 2026
Hard
Software Engineer LockedFind Maximum Envelope Nesting
This question evaluates algorithmic problem-solving skills, particularly reasoning about multi-dimensional ordering, sequence optimization, and time-c...
Coding & Algorithms
4
0
72 people solved
Mar 18, 2026
Medium
Software Engineer LockedFind Minimum Time Across a Grid
This question evaluates algorithm design and problem-solving skills related to grid-based reachability with time-dependent constraints, assessing the ...
Coding & Algorithms
4
0
42 people solved
Mar 18, 2026
Hard
Software EngineerSolve Three Algorithmic Tasks
You were asked three coding problems: 1. Count events inside a time window - You are given an initial collection of event timestamps in HH:MM:SS fo...
Coding & Algorithms
3
0
31 people solved
Mar 18, 2026
Medium
Software Engineer LockedDesign Global Nearby Restaurant Search
This question evaluates a candidate's ability to design a large-scale, low-latency distributed system that supports geospatial indexing, API and data ...
System Design
11
0
161 people solved
Mar 17, 2026
Medium
Machine Learning EngineerWrap Matching Substrings in Bold Tags
During a machine learning engineer phone screen, the coding task was: You are given a string text and a list of strings patterns. Return a new string ...
Coding & Algorithms
6
0
54 people solved
Mar 16, 2026
Medium
Software EngineerImplement Calendar Layout and String Packing
The interview reportedly included two separate coding exercises: 1. Day-view calendar layout - You are given a list of events for a single day. Eac...
Coding & Algorithms
3
0
43 people solved
Mar 16, 2026
Medium
Software EngineerMerge Weekly Time Intervals
You are given a list of time intervals within a single week. Each time is written as a day-of-week plus a 24-hour clock, for example Sat 13:00 or Mon ...
Coding & Algorithms
10
0
79 people solved
Mar 16, 2026