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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
509
Companies
980
Updated
11.08.2026
509 Questions 980 Companies11.08.2026
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
Microsoft logo
MicrosoftAtlassianAmazon

Also asked at Amazon, Google, Salesforce

Hard
Software Engineer

Minimum Sum of Daily Job-Difficulty Maxima

Problem Finish the jobs in their given dependency order over exactly d days, completing at least one job each day. Each day costs the maximum difficul...

Coding & AlgorithmsDynamic ProgrammingArrays & Strings
0
0
11 people solved
Optiver logo
Optiver
Hard
Software EngineerIntern

Optimize flight and cargo bookings for profit

OptiCargo: make the booking algorithm profitable You are given two streams/lists: - Flights you may attempt to book. Each flight has: - flight_id ...

Coding & AlgorithmsDynamic ProgrammingData Structure Design
277
1
2221 people solved
Dec 5, 2025
Google logo
GoogleBloombergMicrosoft

Also asked at Microsoft, Amazon, Meta

Hard
Software Engineer

Count Distinct Nonempty Subsequences of a Lowercase String

Problem Return the number of different nonempty strings obtainable from s by deleting characters while preserving the order of those retained. Equal r...

Coding & AlgorithmsDynamic ProgrammingArrays & Strings
1
0
12 people solved
Apple logo
Apple
Medium
Software Engineer

Distinguish Endpoint and Survival Probabilities in a 3D Diagonal Walk

A walk starts at an integer position (x,y,z) in an8x8x8 grid, with0<=x,y,z<8. On each step it independently chooses one of the eight vectors (±1,±1,±1...

Statistics & MathProbabilityDynamic Programming
0
0
11 people solved
Aug 26, 2026
Uber logo
UberEthosLinkedInGameskraft

Also asked at LinkedIn, Gameskraft

Hard
Software Engineer

Maximize Retained Tree Edge Weight with a Degree Limit

Problem You are given an undirected tree with n nodes labeled 0 through n - 1. Each row of edges is [u, v, w], describing an edge of weight w between ...

Coding & AlgorithmsTreesDynamic Programming
0
0
18 people solved
Walmart Labs logo
Walmart Labs
Medium
Software Engineer

Maximum Sum of Non-Adjacent Values in a Row

A row of n slots holds non-negative integer values. Choose any set of slots such that no two chosen slots are adjacent: for every i, slots i and i + 1...

Coding & AlgorithmsDynamic Programming
7
0
95 people solved
Sep 25, 2026
Google logo
GoogleAmazonMeta

Also asked at Meta, Citadel, CoinDCX

Medium
Software Engineer

Count Ordered Dice Outcomes With a Given Total

Problem Roll n dice, each with faces 1 through k. Count ordered outcomes whose sum equals target, and return the count modulo 1000000007. Different ch...

Coding & AlgorithmsDynamic ProgrammingMath & Number Theory
1
0
13 people solved
Mistral AI logo
Mistral AI
Hard
Software Engineer

Compute Remaining GPUs With Switching Limits

Suppose you manage n GPU clusters with fixed daily capacities capacity[i]. Each day starts fresh with the full capacity, because all GPUs are returned...

Coding & AlgorithmsDynamic ProgrammingArrays & Strings
30
0
202 people solved
Apr 16, 2026
Microsoft logo
Microsoft
Hard
Software Engineer

Count Non-Decreasing Arrays with Prescribed Digit Sums

Given an integer array requiredSum of length n, count the distinct arrays result of length n that satisfy all three conditions: 1. result is non-decre...

Coding & AlgorithmsDynamic ProgrammingMath & Number Theory
5
0
42 people solved
Aug 4, 2026
Microsoft logo
MicrosoftGoogleAmazon

Also asked at Amazon, Infosys, Meta, Bloomberg, Apple, Goldman Sachs, MakeMyTrip, Sprinklr

Medium
Software Engineer

Maximize the Sum of a Nonempty Circular Array Segment

Problem Treat the end of nums as adjacent to its beginning. Return the largest sum of a nonempty contiguous circular segment, using each array positio...

Coding & AlgorithmsDynamic ProgrammingArrays & Strings
1
0
10 people solved
OpenAI logo
OpenAI
Hard
Machine Learning Engineer Locked

Search Monster Battle Strategies

This question evaluates algorithmic problem-solving around deterministic simulation and state-space exploration, focusing on handling transient state ...

Coding & AlgorithmsDynamic ProgrammingSimulation & State Machines
49
1
385 people solved
Apr 8, 2026
Google logo
Google
Medium
Software Engineer Locked

Design Extensible Spreadsheet Aggregation APIs

Design reusable spreadsheet sum, minimum, and maximum APIs with operator state, shared cell evaluation, error policies, and extensible aggregation.

Software Engineering FundamentalsLow-Level Design (OOP)Code Quality & Maintainability
3
0
69 people solved
Sep 18, 2026
Mercor logo
Mercor
Medium
Machine Learning Engineer Locked

Implement a Referral Network

This question evaluates skills in modeling and manipulating directed acyclic graphs, implementing graph-based ranking metrics (reachability and flow c...

Coding & AlgorithmsGraphsData Structure Design
27
0
291 people solved
May 2, 2026
Oracle logo
Oracle
Medium
Software Engineer

Decide Whether a Parenthesis String With Star Wildcards Can Be Balanced

Given a string made only of the characters (, ) and `, decide whether it can be turned into a balanced parenthesis string by replacing every , indepen...

Coding & AlgorithmsGreedy
3
0
34 people solved
Sep 9, 2026
Worldquant logo
Worldquant
Medium
Software Engineer Locked

Count Unordered Combinations of Unlimited Coins

Count distinct ways to reach a target with unlimited coins, treating different orders of the same denominations as one combination.

Coding & AlgorithmsDynamic Programming
9
0
65 people solved
Sep 14, 2026
Amazon logo
AmazonGoogleBloomberg

Also asked at Bloomberg, Deutsche Bank, Microsoft

Medium
Software Engineer

Enumerate Results of Every Binary Parenthesization

Problem Insert parentheses in every possible full binary way into expression and return the resulting values. Keep the operands and operators in their...

Coding & AlgorithmsDynamic ProgrammingParsing & Interpreters
1
0
9 people solved
Amazon logo
AmazonMetaGoogle

Also asked at Google, Microsoft, Bloomberg, Generalmotors

Hard
Software Engineer

Choose Three Disjoint Equal-Length Windows with Lexicographic Ties

Problem Choose three nonoverlapping length-k contiguous subarrays of nums maximizing their combined sum. Return their starting indices in increasing o...

Coding & AlgorithmsDynamic ProgrammingArrays & Strings
1
0
18 people solved
Google logo
GoogleAmazonBloomberg

Also asked at Bloomberg, Meta, Nutanix

Medium
Software Engineer

Maximize Two Sight Values Minus Their Index Distance

Problem Choose two different positions i<j in values. Their score is values[i]+values[j]+i-j, combining both values and subtracting their index distan...

Coding & AlgorithmsArrays & StringsDynamic Programming
1
0
10 people solved
Google logo
GoogleAmazonMicrosoft
Medium
Software Engineer

Best Nonempty Subarray After At Most One Erasure

Problem Choose a contiguous subarray of arr and optionally erase one of its elements. At least one chosen element must remain. Return the greatest sum...

Coding & AlgorithmsDynamic ProgrammingArrays & Strings
0
0
11 people solved
Arista Networks logo
Arista Networks
Medium
Software Engineer

Split Tasks Into Contiguous Server Blocks to Maximize the Total of Top-m Times

A batch of tasks has to be split among servers. The tasks are in a fixed order, and task i takes process_time[i] time units. Each server receives one ...

Coding & AlgorithmsGreedy
1
0
16 people solved
Jul 11, 2026
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