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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
Uber Freight logo
Uber Freight
Medium
Software Engineer

Largest Rider Group Where Every Rider's Companion-Count Limits Hold

A car can take a group of riders on a shared trip. There are N riders, and each rider has two limits: rider i is willing to share the trip with at lea...

Coding & AlgorithmsArrays & StringsIntervals & Scheduling
2
1
22 people solved
Sep 25, 2026
Snowflake logo
Snowflake
Medium
Software EngineerIntern Locked

Return the Prerequisite Route for a Target Course

Return a deterministic course plan containing one target and exactly its direct and indirect prerequisites. Restrict cycle detection to the required s...

Coding & Algorithms
30
0
217 people solved
Aug 23, 2026
Google logo
GoogleAmazonMeta

Also asked at Meta, Microsoft, Bloomberg, Cisco, Oracle, Motive, Akamai, TikTok, Infosys, Morgan Stanley, Walmart Labs

Medium
Software Engineer

Find the Longest Balanced Binary Segment

Problem Return the greatest length of a contiguous subarray of nums containing equally many zeros and ones. Return zero if none exists. `cpp class Sol...

Coding & AlgorithmsArrays & Strings
1
0
16 people solved
Google logo
GoogleAmazonBloomberg

Also asked at Bloomberg, Meta, Microsoft, Infosys, TCS, Apple, Purestorage

Easy
Software Engineer

Find an Index by Halving a Sorted Range

Problem Search the strictly increasing array nums for target. Return its zero-based index if present, otherwise -1. The search must take O(log n) time...

Coding & AlgorithmsBinary Search
1
0
20 people solved
Capital One logo
Capital One
Medium
Software Engineer Locked

Grid State After a Given Number of Days of Spoilage Spreading to Neighbors

A grid holds empty cells, fresh items and spoiled items, and each day spoilage spreads from every spoiled item to its edge-adjacent fresh neighbors. G...

Coding & AlgorithmsGrids & MatricesGraphs
6
0
67 people solved
Sep 17, 2026
Databricks logo
Databricks
Hard
Software Engineer

Implement a Snapshot Set Iterator

Design and implement a set data structure that supports snapshot iteration. The set stores unique values. It must support the following operations: - ...

Coding & AlgorithmsData Structure Design
56
0
498 people solved
Apr 12, 2026
Google logo
GoogleAmazonMeta

Also asked at Meta, Bloomberg, Microsoft, TCS, Arista Networks, Netflix, Accenture, Adobe, Zoho, Airbnb, OnlyFans

Easy
Software Engineer

Detect Equal Values within an Index Radius

Problem Return whether two different array positions hold equal values and are at most k indices apart. Both value equality and the index-distance bou...

Coding & AlgorithmsArrays & StringsTwo Pointers & Sliding Window
0
0
16 people solved
Anthropic logo
Anthropic
Hard
Software Engineer Locked

Simulate Threshold Infection Efficiently

Compute infection times on a grid where healthy cells change in synchronous rounds after reaching an infected-neighbor threshold. Use incremental neig...

Coding & AlgorithmsGrids & MatricesSimulation & State Machines
26
1
285 people solved
Jul 8, 2026
Apple logo
Apple
Medium
Software Engineer Locked

Time-to-Live Token Manager With Renewal and a Heavy Concurrent Read/Write Follow-up

Implement a token manager in which each token expires a fixed time-to-live after it is generated or renewed, renewals extend only unexpired tokens, an...

Software Engineering FundamentalsData Structure DesignConcurrency
9
0
87 people solved
Sep 9, 2026
Quora logo
Quora
Easy
Software EngineerNew Grad

Count meetings in progress at a time, then support editing meeting times

You are given a set of meetings, each with a start time and an end time. Answer how many meetings are in progress at a given moment. In the follow-up,...

Software Engineering FundamentalsIntervals & SchedulingData Structure Design
0
0
4 people solved
Nov 5, 2026
Mintlify logo
Mintlify
Medium
Backend EngineerSenior+

Hiring-manager screen: past work, full-stack flexibility, and why join a startup

In a 30-minute hiring-manager screen for a senior backend engineering role at a startup, the behavioral portion covers three topics: your previous wor...

Behavioral & LeadershipMotivation & FitProject Deep Dive
1
0
21 people solved
Sep 27, 2026
Capital One logo
Capital One
Hard
Machine Learning Engineer Locked

Count Pairs of Numbers That Become Equal After at Most One Digit Swap

Given a list of integers, count the index pairs whose values are equal or become equal after swapping two digits inside one of the two numbers, where ...

Coding & AlgorithmsArrays & Strings
4
0
81 people solved
Sep 3, 2026
Wise logo
Wise
Medium
Product Manager

Wise PM Execution: Deciding What a Shared Platform Builds When Teams Compete

You are the Product Manager for a platform at Wise, and several stakeholder groups are asking for different things from it at the same time. How do yo...

Product / Decision MakingPrioritization & TradeoffsCommunication & Stakeholders
1
0
11 people solved
Sep 22, 2026
IBM logo
IBM
Medium
Business Intelligence Engineer

Sum of Pairwise Modulo Checksums (i mod j + j mod i) for All Pairs up to n

A distributed network system has n data packets whose identifiers are the integers 1 through n. For two identifiers i and j, the checksum of the pair ...

Coding & AlgorithmsMath & Number Theory
0
0
4 people solved
Nov 5, 2026
Mistral AI logo
Mistral AI
Medium
Software Engineer

Compare Tensor Parallelism and Pipeline Parallelism

Compare tensor parallelism and pipeline parallelism for training or serving a transformer too large for one device. Explain what is partitioned, what ...

Machine LearningNeural Networks & TrainingLLM Inference & Serving
3
0
52 people solved
Sep 1, 2026
Hudson River Trading logo
Hudson River Trading
Hard
Software Engineer Locked

Wrap a Fixed-Chunk Stream Reader with Arbitrary-Length Reads

This Hudson River Trading software engineering question asks candidates to wrap a fixed-chunk stream reader with arbitrary-length reads. It is useful ...

Software Engineering FundamentalsData Structure Design
24
0
396 people solved
Jul 2, 2026
Gofundme logo
Gofundme
Medium
Data Scientist

Explain an AI Agent You Built: Design, Evaluation, and Governance

Explain an AI Agent You Built: Design, Evaluation, and Governance Describe an AI-agent project you actually worked on. Explain the agent's purpose, th...

ML System DesignProject Deep DiveAI Agents
3
0
26 people solved
Sep 14, 2026
Lyft logo
Lyft
Medium
Software EngineerSenior+ Locked

Design One-to-One Messaging Across Multiple Devices

Design one-to-one messaging with durable sends, online delivery, mobile push, multi-device synchronization, retries, and stable conversation-history p...

System DesignReal-Time SystemsAuthentication & Authorization
7
0
93 people solved
Sep 8, 2026
OpenAI logo
OpenAI
Medium
Software Engineer Locked

Implement a Distributed Rate Limiter

This question evaluates a candidate's ability to design and implement a distributed rate-limiting mechanism, testing knowledge of distributed systems,...

Coding & AlgorithmsRate LimitingConsistency & Availability
63
0
495 people solved
May 25, 2026
Cohere logo
Cohere
Medium
Machine Learning Engineer

Design a Post-Training Pipeline to Improve a 7B Model's Coding for an Enterprise

Design the post-training process that improves the coding capabilities of a 7-billion-parameter language model for one enterprise customer. Cover the ...

ML System DesignFine-Tuning & Alignment TechniquesReinforcement Learning
7
0
73 people solved
Sep 22, 2026
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