Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions

18.6k

Companies

980

Updated

11.12.2026

18.6k Questions 980 Companies11.12.2026

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."

PLTCHK

_The_TaNk_

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

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

Amazon

Medium

Frontend EngineerNew Grad Locked

Learn and Apply a Front-End Technology Across Devices

Describe learning and applying a front-end technology through primary documentation, a focused prototype, codebase evidence, maintainable integration,...

Behavioral & Leadership

Software EngineerSenior+ Locked

Solve order-statistics and XOR-triplet problems

This multi-part question evaluates skills in order-statistics and efficient counting for array inversion-like problems, alongside bitwise manipulation...

Coding & AlgorithmsBit Manipulation

Software Engineer Locked

Resolve Package Dependencies with Cycle Detection

Produce a deterministic dependency-first build order for every package reachable from a target. Candidates must handle shared dependencies, references...

Software Engineer Locked

Merge Two Sorted Singly Linked Lists

Merge two nondecreasing singly linked lists by relinking existing nodes with constant auxiliary node storage, taking from the first list when current ...

Coding & Algorithms

39 people solved

Aug 9, 2026

Implement BFS-based maze solver

Maze Printing and BFS Solver You are given a 2D grid representing a maze. Each cell of the grid is one of: - '#' – wall (cannot be passed) - '.' – emp...

Coding & AlgorithmsGrids & MatricesDebugging

Member of Technical Staff Locked

Implement Merge Sort and Return a Sorted Array

Implement merge sort from first principles and return integers in nondecreasing order without a built-in sort. The exercise covers empty input, duplic...

Behavioral: Handling a Conflict, Feedback, and On-Call Incidents

This behavioral round asks three separate questions: one about a conflict at work, one about feedback, and one about whether you have on-call experien...

Behavioral & LeadershipConflict & CollaborationReliability & SRE

Present a project deep dive

Behavioral: End-to-End Project Deep Dive (Concise Slide Deck) In the project deep-dive round, the interviewer asks you to present one significant proj...

Behavioral & LeadershipProject Deep DiveFailure & Learning

Software EngineerNew Grad Locked

Show Ownership and Help a Struggling Peer

Show ownership beyond your assigned area and explain how you helped a struggling peer through specific actions, clear coordination, and lasting unders...

Behavioral & LeadershipOwnership & ExecutionMentoring & Team Growth

Optimizing BERT inference latency and throughput for a production NLP service

A fine-tuned BERT-style encoder serves predictions in production (for example, classifying or tagging short text). It is now too slow or too expensive...

Machine LearningMLOps & Model ServingTransformers & Attention

Count Words Using Only Permitted Letters

Problem allowed lists distinct lowercase letters. Count the entries of words whose every character appears in allowed. Repeated letters inside a word ...

Coding & AlgorithmsArrays & Strings

Deep-Clone a Hand-Built Doubly Linked List with an Arbitrary Special Pointer

Implement a doubly linked list in which every node has four fields: - value: the node's value (assume an integer); - left: the previous node, or null ...

Software Engineering FundamentalsLinked Lists

Sum Investment Values after Two Independent Group Tests

Problem Report tiv_2016, rounded to two decimal places, summing policies that share their tiv_2015 with at least one other policy and whose exact (lat...

Data Manipulation (SQL/Python)SQL

7 people solved

Microsoft

Medium

Software Engineer Locked

In-Memory URL Shortener: Encode and Decode

This question evaluates a candidate's ability to design a class-based data structure with paired encode and decode operations that maintain a consiste...

Choose Components for a Data Warehouse

Compare Hive, Spark, Hadoop components, and SQL Server by storage, compute, governance, latency, scale, and operational trade-offs.

Software Engineering Fundamentals

47 people solved

Aug 28, 2026

GoogleAmazonBloomberg

Medium

Software Engineer

Count Position Matches and Remaining Digit Matches

Problem Return a Bulls and Cows hint for secret and guess. Bulls are equal digits at equal positions. Cows are the remaining guess digits that can mat...

Coding & AlgorithmsArrays & Strings

15 people solved

GoogleAmazonMicrosoft

Hard

Software Engineer

Grow Capital by Selecting Affordable Projects

Problem You start with capital w and may complete at most k distinct projects. Project i requires your current capital to be at least capital[i]; comp...

Coding & AlgorithmsGreedyHeaps & Priority Queues

Design delayed job scheduler (LLD)

Design a Delayed Job Scheduler (Low-Level Design) Design a service that schedules a job to execute X seconds in the future with second-level accuracy....

System DesignJob Scheduling & WorkflowsLow-Level Design (OOP)

757 people solved

Aug 7, 2025

GoogleMicrosoftAmazon

Easy

Software Engineer

Order Integers by Set-Bit Count Then Value

Problem Sort arr by increasing number of 1 bits in each value's binary representation. If bit counts tie, order by increasing numeric value. Return th...

Coding & AlgorithmsSortingBit Manipulation

Build a React naval board

Build a simplified, single-player Battleship-style game board in React. There is no opponent, no turn-taking, and no networking — you are implementing...

Software Engineering FundamentalsReact & UI FrameworksState Management

339 people solved

Apr 1, 2026

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Tech Interview Questions

Learn and Apply a Front-End Technology Across Devices

Solve order-statistics and XOR-triplet problems

Resolve Package Dependencies with Cycle Detection

Merge Two Sorted Singly Linked Lists

Implement BFS-based maze solver

Implement Merge Sort and Return a Sorted Array

Behavioral: Handling a Conflict, Feedback, and On-Call Incidents

Present a project deep dive

Show Ownership and Help a Struggling Peer

Optimizing BERT inference latency and throughput for a production NLP service

Count Words Using Only Permitted Letters

Deep-Clone a Hand-Built Doubly Linked List with an Arbitrary Special Pointer

Sum Investment Values after Two Independent Group Tests

In-Memory URL Shortener: Encode and Decode

Choose Components for a Data Warehouse

Count Position Matches and Remaining Digit Matches

Grow Capital by Selecting Affordable Projects

Design delayed job scheduler (LLD)

Order Integers by Set-Bit Count Then Value

Build a React naval board

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