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
Hard
Software EngineerDesign lexicographic range query word store
Design a storage/data structure for a set of strings that supports lexicographic range queries. You are given a collection of words (strings), stored ...
System Design
11
0
125 people solved
Oct 5, 2025
Medium
Software EngineerMerge Two Insertion Diffs in Linear Time
A text-editing system represents changes to a document as insertion diffs. An insertion diff is a set of (position, value) pairs, where each pair mean...
Coding & Algorithms
1
0
25 people solved
Jul 11, 2025
Medium
Frontend EngineerNew Grad LockedImplement a recency cache and min-coins DP
This question evaluates data structure design and algorithmic problem-solving skills, focusing on an LRU-style recency cache and a dynamic programming...
Coding & Algorithms
5
0
44 people solved
Jan 10, 2026
Medium
Software Engineer LockedDesign an IPv4 Address Iterator
This question evaluates a candidate's ability to represent and iterate IPv4 addresses, covering parsing, numeric arithmetic with carry between octets,...
Coding & Algorithms
16
0
116 people solved
Jan 10, 2026
Easy
Machine Learning Engineer LockedAnalyze Complexity and Probability Basics
This question evaluates understanding of data structures and algorithmic time complexity for hash map operations, the computational complexity of dens...
Software Engineering Fundamentals
2
0
47 people solved
Jan 10, 2026
Easy
Data ScientistHow would you analyze and test a price increase?
Case Study (Product / Data Science) You work on a subscription-based AI video editing/creation product and leadership is considering raising prices (e...
Analytics & Experimentation
5
0
65 people solved
Nov 20, 2025
Medium
Software EngineerIntern LockedExplain JS event loop and related concepts
This question evaluates understanding of core frontend JavaScript concepts including the event loop and task scheduling, differences in variable scopi...
Software Engineering Fundamentals
6
0
87 people solved
Nov 20, 2025
Medium
Software EngineerCompute Driver Pay with Double-Pay Windows
You are building payroll logic for a delivery platform. Given a list of order records for one delivery driver, compute the total amount the driver sho...
Coding & Algorithms
0
0
8 people solved
Mar 8, 2026
Medium
Frontend EngineerSenior+ LockedDeduplicate an Array in Linear Time
This question evaluates a candidate's ability to implement linear-time deduplication of primitive arrays, understand hash-based membership tracking, a...
Coding & Algorithms
0
0
10 people solved
May 15, 2026
Easy
Data Scientist LockedRank features using logistic regression coefficients
This question evaluates understanding of feature scaling, interpretation of logistic regression coefficients as feature importance, and awareness of h...
Machine Learning
9
0
67 people solved
Oct 3, 2025
Hard
Software Engineer LockedOptimize a core kernel for throughput
This question evaluates low-level performance optimization competencies, including loop transformations, memory-access patterns, vectorization, parall...
Software Engineering Fundamentals
16
0
210 people solved
Nov 19, 2025
Medium
Machine Learning Engineer LockedDesign a DNA-sequence optimization loop
This question evaluates a candidate's ability to design an end-to-end ML-driven experimental optimization loop for DNA sequence engineering, including...
ML System Design
4
0
51 people solved
Jan 9, 2026
Medium
Machine Learning EngineerSenior+Explain an End-to-End ML Project
In a first-round interview for a lead machine learning role, walk through your background and one machine learning project you led in detail. Your ans...
Machine Learning
2
0
32 people solved
Mar 7, 2026
Medium
Software EngineerSolve Two OA Algorithm Problems
The post describes two separate coding questions from an online assessment: 1. Greedy deletion by minimum value Given an integer array nums, repeate...
Coding & Algorithms
14
0
174 people solved
Jan 8, 2026
Hard
Software Engineer LockedSolve jump maximization and palindromic path queries
This pair of problems evaluates algorithmic problem-solving skills: the first assesses array-based path optimization and stateful score maximization u...
Coding & Algorithms
9
0
88 people solved
Jan 8, 2026
Medium
Software Engineer LockedCompute longest common subsequence length
This question evaluates understanding of dynamic programming and sequence processing, measuring competence in reasoning about optimal substructure, ov...
Coding & Algorithms
6
0
77 people solved
Jan 8, 2026
Medium
Software Engineer AI LockedSolve a Key-Door Corridor Maze
This question evaluates graph search and state-space reasoning by requiring shortest-path computation in a constrained one-dimensional maze with colle...
Coding & Algorithms
2
0
34 people solved
May 14, 2026
Easy
Software EngineerHow would you lead a team through delivery issues?
Interview Prompt (Behavioral & Leadership) You are interviewing for a software engineering role. The interviewer runs a mixed behavioral round: one ex...
Behavioral & Leadership
5
0
53 people solved
Nov 17, 2025
Medium
Software EngineerHow to root-cause Wi‑Fi chip stops after 30 minutes
You are running automated tests on a Wi‑Fi chip. The chip transmits normally at the beginning, but after about 30 minutes it stops transmitting (no si...
Software Engineering Fundamentals
8
0
132 people solved
Mar 6, 2026
Medium
Data Scientist LockedDefine and estimate prevalence of unhealthy users
This question evaluates a data scientist's ability to operationalize an "unhealthy user" metric and compute its prevalence from session duration and d...
Analytics & Experimentation
4
0
41 people solved
Aug 17, 2025