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

Ramp

Medium

Software Engineer

Crawl an HTTP-served maze to its exit with 503 retries, dead ends and cycles

You are given the base URL of a "maze" served over HTTP. Write a program that explores the maze until it finds the exit, and returns the exit's messag...

Software Engineering FundamentalsAPI Integration & HTTP ClientsGraphs

Spreadsheet Class with Formula Cells, Recalculation and Cycle Detection

Implement an in-memory spreadsheet class in stages. The interviewer starts with a simple version and adds requirements after each stage, and the full ...

Software Engineering FundamentalsGraphsData Structure Design

Design a Camel Cards hand evaluator and find best and worst completions

Camel Cards is played with hands of exactly five cards. Every hand belongs to exactly one of seven hand types, and each type has a fixed weight. From ...

Software Engineering FundamentalsLow-Level Design (OOP)Backtracking & Recursion

Count Islands After Each Land Addition to an All-Water Grid

Start with an m x n grid in which every cell is water. You receive a sequence of operations: operation i turns the cell positions[i] = [r, c] into lan...

Coding & AlgorithmsGraphsGrids & Matrices

110 people solved

Harvey

Medium

Machine Learning Engineer

Training LLM Agents for Long-Context, Long-Horizon Tasks: Environments and Rewards

Discuss how you would train a language-model agent to perform well on long-context, long-horizon tasks: tasks in which the model must work over a larg...

Machine LearningReinforcement LearningAI Agents

Encode an Integer with Standard Roman Symbols

Problem Convert the integer value into its standard Roman-numeral representation. Write the decimal place contributions from largest to smallest, usin...

Coding & AlgorithmsMath & Number TheoryGreedy

41 people solved

Ramp

Medium

Software Engineer Locked

Spreadsheet String Concatenation with Dependent Cells

Build a fixed-grid string spreadsheet with concatenation formulas, dependency updates, repeated references, and read-time circular-reference errors.

Coding & AlgorithmsGraphsArrays & Strings

Group prerequisite-linked courses into the earliest possible rounds

There are n courses numbered 0 to n - 1. Each pair [a, b] in prerequisites means course b must be completed before course a can be taken. Courses are ...

Coding & AlgorithmsGraphs

Object-Oriented Design of a Two-Player Chess Game and Its Move Rules

Design a program that lets two people play chess against each other. The interviewer is looking for the object model: the classes, what each is respon...

Software Engineering FundamentalsLow-Level Design (OOP)Simulation & State Machines

Find Matching Runs, Clear Them Once, and Apply Gravity

Given an m-by-n grid, find every horizontal and vertical run of at least three equal values. Report a run as[value,length]; for example, four consecut...

Coding & AlgorithmsSimulation & State MachinesGrids & Matrices

Design a Driver Onboarding State Machine

Design a driver onboarding system. It collects personal information and documents, verifies identity, performs background and driving-record checks, c...

System DesignSystem Design FundamentalsSimulation & State Machines

Software EngineerNew Grad

Ball Position in a Tilting Maze After Timed Tilt Events

A game board holds a rectangular maze and a single ball. At any moment the board is in one of five states: "up", "down", "left", "right" or "flat". Wh...

Coding & AlgorithmsSimulation & State Machines

Implement an LRU Cache, Then Add TTL Expiry and Thread Safety

Implement an in-memory cache with a fixed capacity that evicts the least recently used entry when it is full. Then extend it in two steps: entries tha...

Software Engineering FundamentalsData Structure DesignConcurrency

Software EngineerSenior+

Total Reserved Seats per Flight After Many Range Bookings

There are n flights, numbered 1 to n. Each booking reserves the same number of seats on every flight in a consecutive range: a booking [first, last, s...

Coding & AlgorithmsArrays & Strings

Pivot Index After One Quicksort Partition of [76, 97, 25, 115, 83, 51, 18, 36]

An online assessment includes this multiple-choice question. A quicksort implementation uses the first element of the current subarray as its pivot. I...

Software Engineering FundamentalsSorting

Movie Playlist With Live Score Updates and No Repeats per Loop, Plus Thread Safety

Design and implement an in-memory movie playlist. Every movie has a numeric score, and scores can be updated at any time. The playlist hands out movie...

Software Engineering FundamentalsData Structure DesignConcurrency

Design an LLM-Powered Customer Service Chat System with Robust Failure Handling

Design a chat system for customer service. A customer opens a chat on a business's website or mobile app and talks to an AI agent whose replies are ge...

System DesignReal-Time SystemsFault Tolerance & Failover

Snapshot-Versioned Key-Value Store with Put, Get, Snapshot and Delete

Implement a key-value store whose history is versioned by snapshots rather than by timestamps. put sets a key's current value, snapshot freezes the cu...

Coding & AlgorithmsData Structure DesignBinary Search

Quantitative ResearcherNew Grad

Newton's Method Root Finder and a Stopping Rule That Guarantees the Requested Tolerance

In a HackerRank coding exercise, implement a function that finds a root of a given function to a requested tolerance tol, using Newton's method. The i...

Statistics & MathMath & Number Theory

Build a Top-Down Reporting Forest from Employee-Manager Pairs

You are given a list of reporting relationships. Each person is identified by a positive integer ID, and each pair [employee, manager] means that empl...

Coding & AlgorithmsTrees

203 people solved

Sep 28, 2026

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Tech Interview Questions

Crawl an HTTP-served maze to its exit with 503 retries, dead ends and cycles

Spreadsheet Class with Formula Cells, Recalculation and Cycle Detection

Design a Camel Cards hand evaluator and find best and worst completions

Count Islands After Each Land Addition to an All-Water Grid

Training LLM Agents for Long-Context, Long-Horizon Tasks: Environments and Rewards

Encode an Integer with Standard Roman Symbols

Spreadsheet String Concatenation with Dependent Cells

Group prerequisite-linked courses into the earliest possible rounds

Object-Oriented Design of a Two-Player Chess Game and Its Move Rules

Find Matching Runs, Clear Them Once, and Apply Gravity

Design a Driver Onboarding State Machine

Ball Position in a Tilting Maze After Timed Tilt Events

Implement an LRU Cache, Then Add TTL Expiry and Thread Safety

Total Reserved Seats per Flight After Many Range Bookings

Pivot Index After One Quicksort Partition of [76, 97, 25, 115, 83, 51, 18, 36]

Movie Playlist With Live Score Updates and No Repeats per Loop, Plus Thread Safety

Design an LLM-Powered Customer Service Chat System with Robust Failure Handling

Snapshot-Versioned Key-Value Store with Put, Get, Snapshot and Delete

Newton's Method Root Finder and a Stopping Rule That Guarantees the Requested Tolerance

Build a Top-Down Reporting Forest from Employee-Manager Pairs

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