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
Easy
Data ScientistInternCoin-Flip Race to Four: Game Length and a Conditional Win Probability
Two players play a coin-flipping game with a single fair coin. The coin is flipped once per round. Every heads counts for Player 1, and every tails co...
Machine Learning
4
0
35 people solved
Jul 22, 2025
Hard
Data Scientist LockedMerge Two Sorted Lists
This question evaluates proficiency with linked list data structures, pointer manipulation, in-place merging of sorted sequences, and general algorith...
Coding & Algorithms
10
0
70 people solved
Mar 18, 2026
Hard
Software EngineerAssign Meetings and Find the Most-Used Room
Assign Meetings and Find the Most-Used Room There are n rooms numbered from 0 through n - 1 and meetings [start, end] with distinct start times. Proce...
Coding & Algorithms
0
0
10 people solved
Apr 28, 2026
Hard
Software EngineerFind the Minimum Number of Meeting Rooms
Find the Minimum Number of Meeting Rooms You are given meeting intervals [start, end], where start < end. A room can host at most one meeting at a tim...
Coding & Algorithms
1
0
10 people solved
Apr 28, 2026
Medium
Software Engineer AIImplement an In-Memory File System
Implement an In-Memory File System The source reports an in-memory file-system exercise but not its exact error serialization or current-directory rem...
Coding & Algorithms
1
0
17 people solved
Apr 28, 2026
Medium
Software EngineerReturn the Most Frequent Values in an Array
Given a non-empty integer array, return the k values that appear most frequently. Ties are broken by smaller value first. Implement: `python def top_k...
Coding & Algorithms
2
1
17 people solved
Apr 28, 2026
Medium
Software EngineerFind Valid IP Addresses in Files
You are given an absolute or relative path to a directory on the local file system. Write a program that recursively traverses every subdirectory unde...
Coding & Algorithms
37
0
293 people solved
Apr 28, 2026
Medium
Data Scientist LockedAnalyze advertiser spend by source
This question evaluates proficiency in data manipulation and analytics using SQL or Python, testing skills such as joins, time-based filtering, cohort...
Data Manipulation (SQL/Python)
6
0
46 people solved
Feb 9, 2026
Medium
Software EngineerExplain deadlock cases and how to prevent them
You are asked in an interview to discuss deadlocks in concurrent programming. 1) What is a deadlock? 2) What conditions must hold for a deadlock to be...
Software Engineering Fundamentals
5
0
80 people solved
Feb 9, 2026
Medium
Machine Learning EngineerInternCompute precision/recall from a flaky top-k API
You have 10 image files. Each file has a ground-truth label indicating whether it contains a dog. You can call an API like searchDogs(k) which is inte...
Software Engineering Fundamentals
7
0
82 people solved
Feb 9, 2026
Easy
Machine Learning EngineerHow would you support ML stakeholders?
You are an ML infrastructure engineer working closely with a data scientist stakeholder. Discuss how you would handle the following situations in a pr...
Behavioral & Leadership
9
0
92 people solved
Jan 6, 2026
Hard
Software EngineerDescribe when you distrusted a colleague
Tell me about a time when you did not fully trust a colleague. What caused the concern, how did you validate your assumptions, how did you handle the ...
Behavioral & Leadership
7
0
63 people solved
Jan 6, 2026
Hard
Software Engineer LockedDesign an employee directory with reporting queries
This question evaluates system design competence with emphasis on hierarchical data modeling, concurrent data consistency, API and schema design, and ...
System Design
5
0
93 people solved
Jan 6, 2026
Medium
Software EngineerSenior+ LockedDesign multi-tenant ingestion and processing platform
This question evaluates a candidate's ability to architect scalable, multi-tenant data ingestion and processing platforms, assessing competencies in t...
System Design
19
0
166 people solved
Jan 6, 2026
Medium
Software EngineerInternAnswer SDET internship behavioral interview questions
You are interviewing for an SDET Intern role. Prepare structured answers for the following behavioral prompts: 1. Tell me about your most recent inter...
Behavioral & Leadership
7
0
80 people solved
Jan 6, 2026
Medium
Software EngineerHow would you answer these behavioral prompts?
You are in a behavioral interview. Prepare structured answers (with concrete examples) for the following prompts. Expect follow-ups such as: Why was y...
Behavioral & Leadership
6
0
65 people solved
Jan 6, 2026
Medium
Software EngineerSenior+ LockedDesign first-time Kubernetes deployment in new cloud
This question evaluates system design and cloud platform engineering skills focused on first‑time Kubernetes deployment, covering account bootstrappin...
System Design
8
0
134 people solved
Jan 6, 2026
Medium
Data ScientistInternDaily Temperatures by Town: Linear Models to Predict NYC Temperature
Daily Temperatures by Town: Linear Models to Predict NYC Temperature You are given a dataset of historical daily temperature readings for New York Cit...
Machine Learning
8
0
77 people solved
Sep 10, 2025
Hard
Software EngineerIdentify and mitigate deduplication program risks
System Design: Robust File Deduplication in the Real World Context You are designing a file deduplication tool that scans large directory trees on one...
System Design
28
0
200 people solved
Aug 14, 2025
Medium
Software EngineerSenior+Place Pieces on a Grid
Given integers n and m, and an ordered list figures where each element is one of "A", "B", "C", "D", or "E", construct an n x m integer matrix grid. T...
Coding & Algorithms
6
0
66 people solved
Feb 8, 2026