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 Engineer LockedCount ways to make change (DP)
This question evaluates understanding of dynamic programming and combinatorial counting, focusing on unbounded coin usage and counting order‑independe...
Coding & Algorithms
6
0
72 people solved
Mar 1, 2026
Medium
Software EngineerImplement a hash table with put/get
Problem Implement a simplified hash table (hash map) data structure from scratch. Required API Design a class HashTable with: - HashTable(int numBucke...
Coding & Algorithms
3
0
37 people solved
Mar 1, 2026
Hard
Machine Learning Engineer LockedSample a string by real-valued scores
This question evaluates probabilistic sampling, numerical stability, and algorithmic implementation skills for weighted selection under floating-point...
Coding & Algorithms
12
0
140 people solved
Mar 1, 2026
Easy
Software EngineerCompute minimum rooms for time intervals
You are given a list of meeting time intervals, where each interval is represented as [start, end) (start time inclusive, end time exclusive) and star...
Coding & Algorithms
22
0
164 people solved
Mar 1, 2026
Medium
Software Engineer LockedFind top-k distinct elements
This question evaluates understanding of algorithms and data structures for selecting distinct top-k values and enforcing ordering constraints. It is ...
Coding & Algorithms
25
0
180 people solved
Mar 1, 2026
Medium
Software EngineerDesign a client-side comment system
Scenario You are asked to build a client-side comment system (no backend required). The focus is on data modeling, UI behavior, and persistence. Requi...
System Design
5
0
49 people solved
Mar 1, 2026
Medium
Software Engineer LockedImplement a type-based mutex for tasks
This question evaluates understanding of concurrency and synchronization primitives, testing the ability to design a thread-safe type-based mutex that...
Coding & Algorithms
11
0
88 people solved
Mar 1, 2026
Medium
Software Engineer LockedSolve three coding rounds
This multi-part question evaluates algorithmic problem-solving and practical implementation skills, covering grid geometry and distance metrics for ne...
Coding & Algorithms
18
0
157 people solved
Mar 1, 2026
Medium
Software Engineer LockedParse a nested list from a string
This question evaluates proficiency in parsing nested data structures, string processing, hierarchical representation construction, and analysis of al...
Coding & Algorithms
7
0
78 people solved
Mar 1, 2026
Medium
Data ScientistEvaluate piecewise linear function at x
You are given a polyline defined by n 2D points \((x_i, y_i)\). Connecting consecutive points with straight line segments forms a piecewise linear fun...
Coding & Algorithms
12
0
109 people solved
Mar 1, 2026
Medium
Software Engineer LockedFlatten and unflatten nested Python structures
This question evaluates proficiency in manipulating nested data structures, deterministic traversal and mapping between hierarchical shapes and flat i...
Coding & Algorithms
8
0
103 people solved
Mar 1, 2026
Hard
Software Engineer LockedValidate Adding an Edge to a Directed Acyclic Graph
Determine whether a proposed directed edge is new and can be added to an existing DAG without creating a cycle. Reject self-loops and duplicates, then...
Coding & Algorithms
0
0
12 people solved
Jun 8, 2026
Hard
Software Engineer LockedMinimum Cells to Bridge a Magic Grid
This question evaluates proficiency in graph traversal and shortest-path optimization within a 2D grid, testing the ability to find minimum-cost conne...
Coding & Algorithms
1
0
15 people solved
Jun 8, 2026
Medium
Software EngineerDesign Telehealth Consultation Queue
Design a web-based queuing application for a health-insurance company that offers free 24/7 telehealth access to its members through a website and mob...
System Design
3
0
46 people solved
Apr 15, 2026
Hard
Software EngineerFind best downhill ski run from a start
You are given an R x C grid of integers representing elevations. A skier starts at a given cell (sr, sc). From a cell, the skier may move up/down/left...
Coding & Algorithms
23
1
309 people solved
Jan 19, 2026
Hard
Software EngineerDesign a Connect-Four-like board game
Design an object-oriented model for a turn-based, grid-based “drop token” board game similar to Connect Four. Game rules (define these precisely in yo...
Software Engineering Fundamentals
18
0
124 people solved
Jan 19, 2026
Easy
Software Engineer LockedValidate a bracket string
This question evaluates a candidate's ability to reason about paired-token matching and nested structure correctness in strings, measuring skills in p...
Coding & Algorithms
2
0
29 people solved
Jan 19, 2026
Easy
Data Scientist LockedExplain Type I/II errors vs precision/recall
This question evaluates understanding of statistical hypothesis testing (Type I and Type II errors) and their relationship to binary classification me...
Statistics & Math
4
0
69 people solved
Nov 8, 2025
Easy
Data ScientistSenior+ LockedClean and Merge Housing Data
This question evaluates data cleaning, type coercion, robust merge operations, and missing-data imputation skills within tabular datasets, emphasizing...
Data Manipulation (SQL/Python)
2
0
50 people solved
Feb 28, 2026
Medium
Machine Learning EngineerDiscuss Research Experience and Challenges
Behavioral interview focused on prior research experience. Be prepared to describe one or two research projects you personally drove, including the pr...
Behavioral & Leadership
6
0
70 people solved
Feb 28, 2026