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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
1.5k
Companies
980
Updated
11.12.2026
1.5k Questions 980 Companies11.12.2026
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
Snowflake logo
Snowflake
Medium
Frontend Engineer Locked

Implement an event emitter

This question evaluates understanding of event-driven programming and API design in a frontend environment, specifically the ability to manage event l...

Coding & AlgorithmsJavaScript & TypeScriptData Structure Design
7
0
130 people solved
Jan 11, 2026
Ramp logo
Ramp
Medium
Frontend Engineer

Build a React Word-Guessing Game with Green, Yellow, and Red Letter Feedback

Build a small word-guessing game as a front-end project using React, written in JavaScript or TypeScript. The game has a fixed target word. Each time ...

Software Engineering FundamentalsReact & UI FrameworksArrays & Strings
4
0
56 people solved
Jan 28, 2026
Meta logo
Meta
Medium
Machine Learning Engineer Locked

Maximize unique characters from a word list

This question evaluates algorithmic problem-solving skills focused on combinatorial subset selection and character-uniqueness constraints in strings, ...

Coding & AlgorithmsBacktracking & RecursionArrays & Strings
12
0
96 people solved
Feb 12, 2026
Uber logo
Uber
Medium
Software EngineerSenior+

Solve stock profit and vertical tree traversal

You have a 60-minute coding interview with two algorithm questions: 1) Max profit from one stock trade - Input: an integer array prices, where prices[...

Coding & AlgorithmsArrays & StringsTrees
16
0
165 people solved
Feb 9, 2026
Citadel logo
Citadel
Medium
Software Engineer

Explain hash maps and solve array intersection

1) Explain the internal implementation of a hash map: underlying array/bucket layout, hash function choice, collision resolution strategies (separate ...

Coding & AlgorithmsData Structure DesignArrays & Strings
21
0
178 people solved
Jul 26, 2025
SoFi logo
SoFi
Easy
Software Engineer

Solve Time-Window and Binary Swap Problems

This online assessment contained two coding problems: 1. Maximum requests in a time window You are given a non-decreasing integer array requestTimes, ...

Coding & AlgorithmsArrays & StringsSimulation & State Machines
10
0
108 people solved
Jan 20, 2026
Amazon logo
Amazon
Medium
Software Engineer

Solve server updates and grid inconvenience minimization

1) You are given an integer array server of length n, where server[i] is the number of requests the i-th server can process. Over multiple days, you r...

Coding & AlgorithmsGrids & MatricesArrays & Strings
12
0
172 people solved
Sep 6, 2025
Google logo
Google
Medium
Software Engineer

Build a bigram next-word predictor with weighted sampling

You are given a training set of token sequences (sentences), for example: ` [["a","b","c"], ["a","s","d"]] ` 1) Train a simple next-word prediction m...

Machine LearningNatural Language ProcessingArrays & Strings
12
0
168 people solved
Jan 11, 2026
Google logo
Google
Hard
Software Engineer

Shuffle array using random integer API

You are given an array nums of length n representing a deck of distinct cards. You do not have access to a built-in shuffle function, but you are give...

Coding & AlgorithmsMath & Number TheoryArrays & Strings
10
0
145 people solved
Dec 8, 2025
Goldman Sachs logo
Goldman Sachs
Easy
Software Engineer Locked

Constant-Time Put, Delete and Uniform Random Selection Data Structure

Design a data structure that inserts a key, deletes a key, and returns a uniformly random stored key, with every operation in constant time. It tests ...

Software Engineering FundamentalsData Structure Design
5
0
40 people solved
Sep 13, 2026
Retool logo
Retool
Medium
Software Engineer

Compute max profit with forced trades

Compute max profit with forced trades Given an array prices where prices[i] is the stock price on day i, solve two related tasks under a forced-trade ...

Coding & AlgorithmsDynamic ProgrammingArrays & Strings
21
0
145 people solved
Jul 26, 2025
DoorDash logo
DoorDash
Medium
Software Engineer

Can two names match with ≤2 swaps?

You are given two restaurant names represented as strings s and t of equal length (same character set, case-sensitive). In one operation, you may swap...

Coding & AlgorithmsArrays & Strings
8
0
128 people solved
Jan 13, 2026
BlackRock logo
BlackRock
Easy
Software Engineer Locked

Traverse a tree and answer 2D prefix sums

This question evaluates a candidate's competency in tree traversal and array preprocessing, specifically in-order traversal of binary trees and 2D pre...

Coding & AlgorithmsTreesGrids & Matrices
18
0
126 people solved
Jan 22, 2026
Meta logo
Meta
Medium
Software Engineer

Optimize flight costs and find grid path

1) Given two integer arrays D and R of equal length n, where D[i] is the cost to depart on day i and R[j] is the cost to return on day j, choose indic...

Coding & AlgorithmsArrays & StringsGrids & Matrices
15
0
106 people solved
Sep 6, 2025
Apple logo
Apple
Medium
Software Engineer Locked

Find k Smallest Pair Sums

This question evaluates skills in algorithm design, working with sorted arrays, pairing and ordering elements, and analyzing time and space complexity...

Coding & AlgorithmsHeaps & Priority Queues
12
0
90 people solved
Dec 22, 2025
Amazon logo
Amazon
Medium
Data Scientist

Solve two-sum variants at scale

Base task: Given nums = [3, 1, 2, 2, 4] and target = 4, return the 0-based index pair (i, j) with i < j such that nums[i] + nums[j] = target. If multi...

Coding & AlgorithmsArrays & StringsTwo Pointers & Sliding Window
16
0
128 people solved
Oct 13, 2025
Scale AI logo
Scale AI
Medium
Software Engineer

Compute community ranges and town idle hours

You are given two in-memory datasets for a party-planning app. 1) PartyWindow: {partyId: string, startTime: ISO-8601 UTC datetime, endTime: ISO-8601 U...

Coding & AlgorithmsIntervals & SchedulingSorting
20
0
228 people solved
Sep 6, 2025
Google logo
Google
Medium
Product Manager

Letter-Guessing Strategy for a Program That Plays Hangman

You are interviewing for a product manager role at Google, and the interviewer asks a technical question: if you had to write a program that plays Han...

Software Engineering FundamentalsProbabilitySimulation & State Machines
1
0
13 people solved
May 18, 2025
Box logo
Box
Medium
Software Engineer

Solve classic troubleshooting & algorithm tasks

Solve classic troubleshooting & algorithm tasks System failure troubleshooting: You can only SSH into the machine and the log file is huge. How would ...

Coding & AlgorithmsDebuggingConcurrency
40
0
309 people solved
Aug 4, 2025
xAI logo
xAI
Medium
Software Engineer

Explain arrays and memory layout

What is an array? How is an array represented in memory (contiguous layout, element size and alignment, indexing arithmetic). Analyze time complexitie...

Coding & AlgorithmsArrays & StringsMemory Management
15
0
142 people solved
Aug 12, 2025
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