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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
12.2k
Companies
569
Updated
10.14.2026
12.2k Questions 569 Companies10.14.2026
PLTCHK testimonial
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_ testimonial
_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"

Chris testimonial
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 testimonial
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."

Jake testimonial
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 testimonial
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."

Carlos testimonial
CarlosFull Stack, Shopify

"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."

boba.tea.vibes testimonial
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."

Andy testimonial
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 testimonial
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."

Shruti testimonial
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 testimonial
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."

Bianca testimonial
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 testimonial
tambrahm007

"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."

toa testimonial
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."

PLTCHK testimonial
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_ testimonial
_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"

Chris testimonial
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 testimonial
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."

Jake testimonial
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 testimonial
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."

Carlos testimonial
CarlosFull Stack, Shopify

"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."

boba.tea.vibes testimonial
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."

Andy testimonial
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 testimonial
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."

Shruti testimonial
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 testimonial
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."

Bianca testimonial
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 testimonial
tambrahm007

"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."

toa testimonial
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
Freddie Mac logo
Freddie Mac
Medium
Data Scientist

Implement blocked time-series cross-validation

Implement a panel-aware blocked time-series cross-validation splitter with an embargo. Input: DataFrame columns [loan_id, msa, month]. Requirements: (...

Coding & Algorithms
11
0
82 people solved
Oct 13, 2025
Airbnb logo
Airbnb
Medium
Data Scientist Locked

Build and evaluate an order prediction model

This question evaluates a data scientist's competency in building and evaluating binary classification models with temporal constraints and operationa...

Machine LearningSupervised LearningModel Evaluation
10
0
105 people solved
Oct 13, 2025
TikTok logo
TikTok
Medium
Software Engineer

Delete nodes in linked list and binary tree

You are asked to solve two short coding tasks. You may assume standard node definitions: - Singly linked list node: val, next - Binary tree node: val,...

Coding & AlgorithmsLinked ListsTrees
5
0
112 people solved
Feb 11, 2026
Apple logo
Apple
Medium
Machine Learning Engineer Locked

Explain dataset size, generalization, and U-Net skips

This question evaluates understanding of core machine learning and computer vision competencies — including dataset size trade-offs, generalization an...

Machine LearningML FundamentalsComputer Vision
22
0
152 people solved
Mar 1, 2026
Reevo logo
Reevo
Medium
Software Engineer

Fetch and aggregate paginated team data via API

Implement a function getTopTeams(baseUrl, n) that calls a paginated HTTP API returning a JSON array of team objects on each page: [{"name": string, "w...

Data Manipulation (SQL/Python)
2
0
27 people solved
Aug 12, 2025
IXL Learning logo
IXL Learning
Hard
Software EngineerNew Grad Locked

Maintain a Stream Median

This question evaluates the ability to design and implement efficient online data structures and algorithms for maintaining dynamic order statistics a...

Coding & Algorithms
5
0
40 people solved
Feb 22, 2026
Bloomberg logo
Bloomberg
Medium
Product Manager

How would you manage platform transitions?

How would you manage platform transitions? You are the PM for a software product undergoing a system migration. How would you maintain support for the...

Product / Decision MakingTechnical Tradeoffs for PMsRoadmapping & Planning
17
1
124 people solved
Jul 22, 2025
J.P. Morgan logo
J.P. Morgan
Medium
Software Engineer

Compute ring window max and deletion indices

Part A — Ring window maximum: You are given n computers arranged in a circle, represented by an array of bits (1 = on, 0 = off), and an integer k (1 <...

Coding & AlgorithmsTwo Pointers & Sliding WindowArrays & Strings
11
0
114 people solved
Jul 31, 2025
Asana logo
Asana
Medium
Software Engineer Locked

Design a jigsaw puzzle (OOD)

This question evaluates object-oriented design skills, including class and relationship modeling, state and behavior encapsulation, validation logic, ...

Software Engineering FundamentalsLow-Level Design (OOP)
39
0
268 people solved
Jan 22, 2026
Amazon logo
Amazon
Medium
Applied Scientist

Implement integer division without using division

You are given two 32-bit signed integers dividend and divisor. Implement a function that divides dividend by divisor and returns the integer quotient,...

Coding & Algorithms
10
0
72 people solved
Dec 8, 2025
Google logo
Google
Easy
Software Engineer Locked

Compute minimum meeting rooms on circular day

This question evaluates a candidate's ability to reason about interval scheduling, circular time wrap-around, and resource allocation for overlapping ...

Coding & AlgorithmsIntervals & SchedulingSorting
13
0
106 people solved
Jan 4, 2026
SIG (Susquehanna) logo
SIG (Susquehanna)
Medium
Software Engineer

Implement 3x3 matrix transforms and rotation

Implement 3x3 matrix transforms and rotation For a 3x3 matrix, write Python code to: (a) transpose it in-place; (b) swap any two rows and any two colu...

Coding & AlgorithmsGrids & Matrices
25
0
194 people solved
Aug 8, 2025
Snapchat logo
Snapchat
Medium
Software Engineer

Find index of first unique character

Find index of first unique character Given a string s, return the index of the first character that appears exactly once; if none exists, return -1. A...

Coding & Algorithms
9
0
67 people solved
Jul 28, 2025
Microsoft logo
Microsoft
Hard
Software Engineer Locked

Find minimum cycle cost per node

This question evaluates proficiency in graph algorithms and algorithmic optimization, specifically reasoning about weighted directed graphs, cycle cos...

Coding & AlgorithmsGraphs
8
0
89 people solved
Feb 11, 2026
Capital One logo
Capital One
Medium
Data Scientist

Assess card rewards profitability and break-even spend

Credit Card Unit Economics and Break-even Spend Context A bank is evaluating launching a credit card that pays 1% rewards on all purchases. Consider p...

Analytics & ExperimentationBusiness Case Analysis
7
0
99 people solved
Oct 13, 2025
Morgan Stanley logo
Morgan Stanley
Medium
Data Scientist

Estimate Greeks and hedging PnL

Consider a vanilla European option under the Black-Scholes framework. 1. Without using a calculator, explain how you would mentally estimate the optio...

Software Engineering Fundamentals
4
0
72 people solved
Dec 8, 2025
Airbnb logo
Airbnb
Medium
Software Engineer

Design and implement Connect Four engine

Design and implement a Connect Four game engine. Use a default 6x7 board and two players. Provide an API with: drop(col, player) returning the row pla...

Coding & AlgorithmsSimulation & State MachinesGrids & Matrices
19
0
166 people solved
Jul 16, 2025
Amazon logo
Amazon
Medium
Software EngineerIntern Locked

Maximize capacity with primary-backup pairing

This question evaluates combinatorial optimization and constrained matching skills, focusing on algorithm design, complexity analysis, and resource-al...

Coding & Algorithms
7
0
68 people solved
Jan 6, 2026
DoorDash logo
DoorDash
Hard
Software Engineer

Scale the cache to a distributed system

Design: Scale a Single-Node LRU Cache to a Distributed Cache Assume you are upgrading a single-node, in-memory LRU cache to a distributed cache to sup...

System DesignCachingPartitioning & Consistent Hashing
11
0
129 people solved
Sep 6, 2025
Snowflake logo
Snowflake
Medium
Software Engineer

Compute task order with prerequisites

Given an integer n representing tasks labeled 0..n-1 and a list of prerequisite pairs (a, b) meaning b must be completed before a, return any valid or...

Coding & AlgorithmsGraphs
13
0
112 people solved
Aug 14, 2025
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