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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
476
Companies
980
Updated
11.10.2026
476 Questions 980 Companies11.10.2026
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
Meta logo
Meta
Hard
Software Engineer

Cheapest Grid Trip with Alternating Direction Penalties

Cheapest Grid Trip with Alternating Direction Penalties You are given an m-row, n-column grid and a matrix penalty. Entering cell (i, j) costs (i + 1)...

Coding & AlgorithmsGraphsHeaps & Priority Queues
1
0
9 people solved
Shopify logo
Shopify
Medium
Software Engineer AI

Implement a Word Guessing Game

Implement a four-letter word guessing game. You are given: - A dictionary containing valid four-letter English words. - A target word selected from th...

Coding & AlgorithmsSimulation & State MachinesArrays & Strings
16
1
173 people solved
Jan 10, 2026
Google logo
Google
Hard
Software Engineer Locked

Determine winner in stack-merging game

This question evaluates understanding of combinatorial game theory, impartial game analysis, state-space encoding, and efficient state-space search te...

Coding & AlgorithmsSimulation & State MachinesBacktracking & Recursion
18
2
134 people solved
Jan 6, 2026
Upstart logo
Upstart
Medium
Data Scientist

Analyze HT vs HH stopping-time probabilities

Coin-Flip Stopping Game: HT vs HH You repeatedly flip a coin until either the pattern HT appears (Player A wins) or the pattern HH appears (Player B w...

Statistics & MathProbabilitySimulation & State Machines
10
0
188 people solved
Oct 13, 2025
Amazon logo
Amazon
Medium
Software EngineerIntern

Control Robot Charging with Repeated Polling and Exclusive Station Assignments

A fleet contains multiple robots and a limited number of charging stations. A robot whose battery level is below 50% should be sent to an available ch...

Software Engineering FundamentalsSimulation & State MachinesAPI Integration & HTTP Clients
2
0
26 people solved
Jan 10, 2026
Jump Trading logo
Jump Trading
Medium
Machine Learning Engineer

Solve stock trading with pattern rules

Question Given an array of daily stock prices and two pattern arrays: sellPattern and buyPattern, each consisting of 1 (price up) and -1 (price down) ...

Coding & AlgorithmsArrays & StringsSimulation & State Machines
14
0
136 people solved
Aug 4, 2025
Shopify logo
Shopify
Medium
Machine Learning Engineer

Design and implement a word-guessing game

Word-Guessing Game (Wordle-like) — Design and Implement Context Build a small, standalone command-line application that lets a user guess a secret wor...

System DesignSimulation & State MachinesArrays & Strings
73
0
492 people solved
Aug 12, 2025
Instacart logo
Instacart
Medium
Software Engineer

Compute delivery wait times

You're building a last‑mile delivery simulator. Given n orders, each with arrival_time (non-decreasing integers) and service_time (positive integers),...

Coding & AlgorithmsHeaps & Priority QueuesSimulation & State Machines
8
0
134 people solved
Sep 6, 2025
Instacart logo
Instacart
Medium
Software Engineer

Implement bus route simulation features

Bus Route Simulation – Boarding, Capacity, and Priority Passes You are given a partially implemented codebase for simulating bus routes in a city. Bus...

Coding & AlgorithmsSimulation & State Machines
77
0
552 people solved
Oct 31, 2025
Capital One logo
Capital One
Medium
Software Engineer

Solve powers, phases, grid pops, and swaps

Solve the following four problems: 1) Count powers of k in an array: Given an array of positive integers nums and an integer k >= 1, return how many e...

Coding & AlgorithmsMath & Number TheoryGrids & Matrices
18
0
195 people solved
Sep 6, 2025
Amazon logo
AmazonSalesforceMicrosoft

Also asked at Microsoft, Google, Bloomberg, Flipkart, Goldman Sachs, ByteDance, ServiceNow, PhonePe, Blinkit

Medium
Software Engineer

Measure Infection Time from One Valued Binary-Tree Node

Problem At minute zero, the unique node with value start in a binary tree becomes infected. Each subsequent minute, infection spreads simultaneously a...

Coding & AlgorithmsTreesGraphs
0
0
7 people solved
Instacart logo
Instacart
Medium
Software Engineer

Simulate bus boarding with priority and wheelchairs

You are implementing a simplified bus boarding simulator. Model: - Person has at least: - id (string/int) - priority (boolean): if true, they shou...

Software Engineering FundamentalsSimulation & State MachinesTesting & Quality
29
0
266 people solved
Mar 4, 2026
Instacart logo
Instacart
Medium
Software Engineer

Compute and optimize average wait time

You are given n pickup orders for a grocery delivery counter. Each order i is described by orders[i] = [arrival_i, service_i] in minutes, where arriva...

Coding & AlgorithmsSimulation & State MachinesHeaps & Priority Queues
27
0
190 people solved
Jul 31, 2025
Salesforce logo
Salesforce
Medium
Software EngineerSenior+

Count the Steps at Which Set Bits Form an Exact Prefix of Ones

A binary string of length n has positions numbered 1 to n, and every bit starts as 0. The process runs for n steps: at step i (counting from 1), the b...

Coding & AlgorithmsArrays & Strings
0
0
14 people solved
Feb 27, 2026
Meta logo
Meta
Medium
Software Engineer

Schedule and cancel delayed payments

Question Extend an existing in-memory payment system (immediate transfers between accounts, plus a top-N spenders/payers leaderboard) with scheduled p...

System DesignData Structure DesignHeaps & Priority Queues
17
0
154 people solved
Sep 6, 2025
Meta logo
MetaBloombergGoogle
Easy
Software Engineer

Maximize Final Distance After Fixed and Flexible Moves

Maximize Final Distance After Fixed and Flexible Moves You start at coordinate 0 on a number line. String moves has length n and contains only 'L', 'R...

Coding & AlgorithmsMath & Number TheoryGreedy
0
0
6 people solved
Zipline logo
Zipline
Medium
Software Engineer

Design a Checkers Game Simulator

Design and partially implement an object-oriented simulator for a two-player checkers-like board game. Requirements: - The game is played on an 8 x 8 ...

Software Engineering FundamentalsLow-Level Design (OOP)Simulation & State Machines
7
0
98 people solved
Mar 11, 2026
Duolingo logo
Duolingo
Hard
Software Engineer

Design Animal Chess game classes

Design Animal Chess game classes Design a Simple Animal Chess (Jungle/Dou Shou Qi) Engine Context You are to design and implement a minimal-but-correc...

System DesignLow-Level Design (OOP)Simulation & State Machines
16
0
221 people solved
Aug 4, 2025
AMD logo
AMD
Easy
Software Engineer

PCIe deep dive: TS1/TS2, LTSSM link training, TLP types and transaction ordering rules

You are interviewing for a PCI Express (PCIe) verification role, and the interviewer goes deep on the protocol: from link training at the physical lay...

Software Engineering Fundamentals
4
0
64 people solved
Apr 30, 2024
Jane Street logo
Jane Street
Hard
Software Engineer

Snake Game: Minimum Moves to Reach the Apple

Snake Game: Minimum Moves to Reach the Apple You are simulating the classic Snake game on a grid with R rows and C columns. Cells are identified as (r...

Coding & AlgorithmsGraphsGrids & Matrices
72
0
567 people solved
Sep 14, 2022
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