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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 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
Amazon logo
AmazonGoogleTCS

Also asked at TCS, Microsoft, Bloomberg, LinkedIn, Meta, PhonePe, Flipkart

Hard
Software Engineer

Find the Narrowest Interval Meeting Every Sorted List

Problem Return [a,b] containing at least one element from every sorted list in nums. Minimize b-a, breaking equal-width ties by the smaller a. Endpoin...

Coding & AlgorithmsHeaps & Priority QueuesGreedy
1
0
14 people solved
Airwallex logo
Airwallex
Medium
Software Engineer Locked

Design a Real-Time Robot Chase Game on a Weighted Terrain Grid

System design question on a server-authoritative real-time chase game where AI robots pathfind toward a player across a 500x500 weighted terrain grid....

System DesignMultiplayer Game SystemsGraphs
8
0
63 people solved
Sep 10, 2026
LinkedIn logo
LinkedIn
Medium
Data Scientist

Diagnose a Drop in Applications from Job Recommendation Emails

Diagnose a Drop in Applications from Job Recommendation Emails Applications attributed to job-recommendation emails suddenly decline on one day. Descr...

Analytics & ExperimentationMetric DiagnosticsUser Behavior & Funnels
2
0
23 people solved
Sep 22, 2026
Uber logo
Uber
Medium
Software EngineerIntern Locked

Last Truck to Leave a One-Dimensional Lane

This algorithms interview question evaluates reasoning about continuous motion, collisions, and exact rational time in a one-dimensional simulation. I...

Coding & AlgorithmsMath & Number Theory
30
0
544 people solved
Jul 3, 2026
Infosys logo
InfosysMetaAmazon

Also asked at Amazon, Bloomberg, Microsoft

Easy
Software Engineer

Cheapest Way to Gather Chips at One Position

Problem Each chip starts at its given integer position. Moving one chip by +2 or -2 costs 0; moving it by +1 or -1 costs 1. Return the minimum total c...

Coding & AlgorithmsMath & Number TheoryGreedy
2
0
14 people solved
LinkedIn logo
LinkedIn
Hard
Machine Learning Engineer

Sum Every Element of an N-Dimensional Array Readable Only by Index Lists

You are given an object m of type MultiDimArray that represents an array with an arbitrary number of dimensions. How the elements are stored is hidden...

Coding & AlgorithmsBacktracking & Recursion
10
0
73 people solved
Aug 26, 2026
Amazon logo
Amazon
Medium
Software Engineer

Compute minimum delivery days

Question Given N distribution centers numbered 1..N and an orderCityList of length M where orderCityList[i] denotes the city that the i-th order must ...

Coding & Algorithms
37
1
357 people solved
Aug 4, 2025
Helmai logo
Helmai
Medium
Software Engineer

Detect a Deadlock from Thread Lock Acquire and Release Logs

You are given the event log of a multithreaded program, in the order the events happened. Each event records a thread requesting or releasing a lock. ...

Coding & AlgorithmsGraphsSimulation & State Machines
0
0
14 people solved
Sep 30, 2026
StackAdapt logo
StackAdapt
Medium
Machine Learning Engineer Locked

Reservoir Sampling: Uniform k-of-n Sample From a Stream of Unknown Length

Design a one-pass algorithm that keeps a uniform random sample of k items from a stream whose length is unknown in advance, using memory proportional ...

Statistics & MathMath & Number TheoryProbability
5
0
59 people solved
Sep 9, 2026
Remitly logo
Remitly
Medium
Software Engineer Locked

Behavioral Screen: Going Beyond Your Responsibility and a Time You Failed

Two behavioral questions from a software engineering technical screen: describe a time you went beyond your responsibility, and describe a time you fa...

Behavioral & LeadershipOwnership & ExecutionFailure & Learning
6
0
54 people solved
Sep 7, 2026
Google logo
Google
Medium
Software Engineer Locked

Approach a Forced-Choice Work-Style Assessment Consistently

Approach a forced-choice work-style assessment through truthful, stable evidence rather than a manufactured ideal profile. The discussion explains rel...

Behavioral & Leadership
4
0
79 people solved
Aug 16, 2026
Retell AI logo
Retell AI
Medium
Software Engineer Locked

Query an Indexed In-Memory Numeric Table

Build reusable column indexes for an immutable numeric table, then answer range-filter queries that combine conditions with logical AND. The task test...

Coding & Algorithms
14
0
140 people solved
Jul 27, 2026
NVIDIA logo
NVIDIA
Medium
Applied ScientistIntern Locked

Research Project Deep Dive: Motivation, Training Pipeline, Results, and Takeaways

A research internship interview question asking the candidate to give a structured deep dive on their own model-training project in about 20 minutes. ...

Machine LearningProject Deep DiveModel Evaluation
6
0
62 people solved
Sep 17, 2026
ByteDance logo
ByteDance
Medium
Software Engineer

Kubernetes request path: pods vs nodes, Service types, DNS TTLs and 5xx debugging

The interviews were for an infrastructure team, and every round included a run of fundamentals questions about how traffic reaches a service running o...

Software Engineering FundamentalsContainers & OrchestrationNetworking
2
0
18 people solved
Sep 11, 2026
Verkada logo
Verkada
Medium
Software Engineer Locked

Design a Camera Health Dashboard

Explore event ingestion and expiration-state design for a dashboard that tracks one million camera heartbeats in a rolling 60-second window.

System Design
5
0
73 people solved
Aug 14, 2026
Coupang logo
Coupang
Medium
Software Engineer Locked

Anagram Group Tracker with Add, Remove, and Largest-Group Queries: Read vs Write Trade-offs

Coding and design question: build a structure that supports adding words, removing words, and returning the current largest anagram group using only t...

Software Engineering FundamentalsData Structure DesignHeaps & Priority Queues
4
0
49 people solved
Aug 27, 2026
Confluent logo
Confluent
Medium
Software Engineer

Complete a 9x9 Sudoku Puzzle That Has Exactly One Solution

You are given a 9 x 9 Sudoku puzzle in which some cells are filled with digits and the rest are empty. Fill every empty cell so that the completed boa...

Coding & AlgorithmsBacktracking & Recursion
10
0
91 people solved
Sep 12, 2026
Google logo
GoogleAmazonHTC

Also asked at HTC, Bloomberg, Microsoft, Meta, Sony

Easy
Software Engineer

Count Equal-Value Index Pairs

Problem Count pairs of indices(i,j) with i<j and nums[i]==nums[j]. Each pair of positions counts separately. `cpp class Solution { public: int num...

Coding & AlgorithmsArrays & Strings
1
0
17 people solved
Atlassian logo
Atlassian
Medium
Software Engineer Locked

Implement sequential and parallel URL requests

This question evaluates proficiency in HTTP networking, asynchronous and parallel programming (promises/futures), deduplication and order preservation...

Coding & AlgorithmsAPI Integration & HTTP ClientsConcurrency
48
0
421 people solved
Feb 11, 2026
Rippling logo
Rippling
Medium
Software Engineer AI Locked

Implement Courier Delivery Cost Tracking

This question evaluates skills in time-interval arithmetic, in-memory state management, and billing computation for delivery records, including handli...

Coding & AlgorithmsLow-Level Design (OOP)Intervals & Scheduling
21
0
255 people solved
May 15, 2026
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