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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
Capital One logo
Capital OneVisaUber

Also asked at Uber, Roblox, Amazon, Meta, TikTok

Medium
Software Engineer

Count Equal-Colored Neighbors After Each Recoloring

Count Equal-Colored Neighbors After Each Recoloring An array colors has length n and initially contains only zeros. Zero means that a position is unco...

Coding & AlgorithmsSimulation & State MachinesArrays & Strings
1
0
16 people solved
Palantir logo
PalantirAmplitudeAtlassian

Also asked at Atlassian, Amazon, Google, Microsoft, Uber, Salesforce, IXL Learning, WeRide

Medium
Software EngineerSenior+

Simulate a Growing Snake on a Grid and Report the Score After Every Move

A snake moves on a rectangular board with height rows and width columns. Cells are written (row, col), with (0, 0) in the top-left corner. The snake s...

Coding & AlgorithmsSimulation & State MachinesStacks & Queues
2
0
41 people solved
Google logo
GoogleVisaUber

Also asked at Uber, Capital One, Meta, Amazon, Roblox, Microsoft, Square, SIG (Susquehanna)

Medium
Software Engineer

Rotate a Stone Box and Settle Its Contents

Problem boxGrid contains stones #, fixed obstacles *, and empty cells .. Rotate this rectangular box ninety degrees clockwise, then let stones fall do...

Coding & AlgorithmsSimulation & State MachinesGrids & Matrices
1
0
16 people solved
NVIDIA logo
NVIDIA
Easy
Software Engineer Locked

Compute the Final Robot Score

This question evaluates data structure and algorithm proficiency, focusing on managing dynamic multisets with priority-based selection and reasoning a...

Coding & AlgorithmsHeaps & Priority Queues
17
0
133 people solved
May 19, 2026
IBM logo
IBM
Easy
Data Scientist

Find minimum operations to make array sorted

Problem You are given an integer array a of length n. Define one operation as follows: 1. Remove the first element x = a[0]. 2. Append x to the end of...

Coding & AlgorithmsSimulation & State Machines
21
1
285 people solved
Oct 3, 2025
Databricks logo
Databricks
Medium
Software Engineer

Design an efficient Tic-Tac-Toe engine

Design a Tic-Tac-Toe engine on an n x n board. Implement move(row, col, player) -> result where result indicates no winner, player1 wins, player2 wins...

Coding & AlgorithmsSimulation & State MachinesData Structure Design
50
0
378 people solved
Aug 11, 2025
Coinbase logo
Coinbase
Hard
Software Engineer

Implement a crypto order management system

You are building an in-memory crypto order management system. You must parse commands from standard input and print outputs for query commands. Order ...

Coding & AlgorithmsData Structure Design
20
0
381 people solved
Mar 1, 2026
Capital One logo
Capital One
Medium
Software Engineer

Solve four algorithmic coding tasks

You are given four independent coding tasks. They may be solved in any order, and partial test-case credit is awarded for each task. The tasks are rou...

Coding & AlgorithmsTreesSimulation & State Machines
114
0
774 people solved
Sep 6, 2025
Valon logo
Valon
Medium
Software Engineer

Build a staged banking service: ATM cash, statements, transfers, fees, slow transfers

Build a banking service in five parts, adding one capability per part. Each part comes with a sample input file of actions and the expected output, an...

Software Engineering FundamentalsLow-Level Design (OOP)Payments & Ledgers
3
0
74 people solved
Jan 16, 2026
Affirm logo
Affirm
Easy
Software Engineer Locked

Compute Available Offers per User

This question evaluates event-stream processing, stateful per-user counting, and time-window filtering competencies, requiring correctness with ordere...

Coding & AlgorithmsSimulation & State MachinesArrays & Strings
23
0
181 people solved
Mar 13, 2026
Google logo
GoogleMetaAmazon

Also asked at Amazon, Microsoft, Bloomberg

Easy
Software Engineer

Count the Forced Halve-or-Decrement Steps

Problem Reduce num to 0. At every nonzero even value, divide by 2; at every odd value, subtract 1. Return how many forced operations are performed. `c...

Coding & AlgorithmsMath & Number TheorySimulation & State Machines
0
0
9 people solved
Coinbase logo
Coinbase
Hard
Software Engineer AI

Implement Game Physics and Block Mining

You are given two independent coding tasks from the same interview category. Solve both. Task A: Flappy-Bird-Style Jump Boundary Function Implement a ...

Coding & AlgorithmsGreedySimulation & State Machines
46
0
345 people solved
Apr 2, 2026
Decagon logo
Decagon
Medium
Software Engineer

Enumerate 4x4 Tic-Tac-Toe Games

You are given an empty $4 \times 4$ board. Two players, X and O, alternate turns with X moving first. A player wins as soon as they place three of the...

Coding & AlgorithmsBacktracking & RecursionSimulation & State Machines
91
0
855 people solved
Mar 9, 2026
Capital One logo
Capital One
Medium
Software EngineerSenior+

Simulate a Bank Ledger With Validated Transfers, Deposits and Withdrawals

A retail bank's core system keeps every account's balance in memory and must apply a stream of customer requests strictly in the order they arrive. Ea...

Coding & AlgorithmsSimulation & State Machines
1
0
22 people solved
Apr 19, 2026
Amazon logo
AmazonBloomberg
Medium
Software Engineer

Decide the Winner of a Digit-Balance Game

Problem Alice and Bob alternately replace one ? in the even-length string num with any digit from 0 through 9. Alice moves first. When no question mar...

Coding & AlgorithmsMath & Number TheorySimulation & State Machines
1
0
10 people solved
Capital One logo
Capital One
Medium
Software EngineerSenior+

Place Pieces on a Grid

Given integers n and m, and an ordered list figures where each element is one of "A", "B", "C", "D", or "E", construct an n x m integer matrix grid. T...

Coding & AlgorithmsSimulation & State Machines
17
0
216 people solved
Feb 8, 2026
Decagon logo
Decagon
Medium
Software Engineer Locked

Design a Tic-Tac-Toe Engine

This question evaluates algorithm design and data structure competency, emphasizing state representation, time-space trade-offs, and techniques for ac...

Coding & AlgorithmsSimulation & State MachinesGrids & Matrices
29
0
234 people solved
Feb 17, 2026
Databricks logo
Databricks
Hard
Software Engineer Locked

Implement a Tic-Tac-Toe game API

This question evaluates implementation skills in data structures and algorithmic optimization, focusing on efficient state tracking and constant-time ...

Coding & AlgorithmsSimulation & State MachinesData Structure Design
24
0
167 people solved
Jan 7, 2026
Amazon logo
AmazonGoldman SachsMeta

Also asked at Meta, OpenText, Bloomberg, Microsoft, Google, Oracle, TCS, Nutanix

Medium
Software Engineer

Find the Survivor of Clockwise Elimination

Problem People labeled 1 through n sit clockwise. Start counting at person 1, counting that person as one. Remove the kth counted person, then begin a...

Coding & AlgorithmsMath & Number TheoryDynamic Programming
1
0
11 people solved
Anthropic logo
Anthropic
Medium
Machine Learning Engineer

Convert stack samples to execution trace

You are given sampling-profiler output: a list of Sample objects ordered by timestamp ascending. Each Sample has (t: float, stack: list[str]) where st...

Coding & AlgorithmsStacks & Queues
74
0
1202 people solved
Sep 6, 2025
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