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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
LinkedIn logo
LinkedIn
Medium
Machine Learning Engineer

Generate uniform 0–6 from biased coin

You are given a function: - int getRandom01Biased() returns 0 with probability p and 1 with probability 1-p, where p is unknown and may be any value i...

Coding & AlgorithmsMath & Number TheoryProbability
31
0
257 people solved
Feb 18, 2026
Pinterest logo
Pinterest
Hard
Machine Learning Engineer Locked

Bias-Variance Tradeoff and Vanishing Gradients in Feedforward Networks

This question evaluates conceptual understanding of the bias-variance tradeoff and the vanishing-gradient problem in deep feedforward networks, two co...

Machine LearningML FundamentalsNeural Networks & Training
14
0
196 people solved
Jun 12, 2026
Lyft logo
Lyft
Easy
Software Engineer

Implement a Key-Value Store with Nested Transactions

Problem Implement an in-memory key-value store with nested transactions. Values are strings. The store supports lookup, assignment, deletion, counting...

Coding & Algorithms
18
2
191 people solved
Apr 14, 2026
Amazon logo
AmazonGoogleMicrosoft

Also asked at Microsoft, Meta, Bloomberg

Medium
Software Engineer

Distances Between Strict Linked-List Turning Points

Problem A node in a singly linked list is a critical point if its value is strictly greater than both immediate neighbors or strictly less than both. ...

Coding & AlgorithmsLinked Lists
0
0
10 people solved
Meta logo
Meta
Hard
Software Engineer Locked

Respond to Critical Feedback and Show the Change

Prepare a behavioral interview story about receiving critical feedback, evaluating the underlying concern, and making a concrete change. Show how late...

Behavioral & LeadershipSelf-Awareness & Growth
3
0
67 people solved
Aug 3, 2026
J.P. Morgan logo
J.P. Morgan
Medium
Data ScientistSenior+ Locked

Interpret Model Metrics, Regularization, and Resampling Fundamentals

A statistics and machine-learning screening interview covering imbalanced-classification metrics, lift curves, Cohen's kappa, adjusted R-squared, L1 a...

Statistics & Math
5
0
78 people solved
Jul 20, 2026
Google logo
GoogleMetaMicrosoft

Also asked at Microsoft, Amazon, Bloomberg, IBM, Wells Fargo, Oracle

Easy
Software Engineer

Interleave Two Words Starting with the First

Problem Create a string by alternately taking the next character from word1 and word2, starting with word1. After one word ends, append all remaining ...

Coding & AlgorithmsArrays & Strings
0
0
9 people solved
Anthropic logo
Anthropic
Medium
Software EngineerSenior+ Locked

Prepare for a Frontier AI Recruiter Screen

This question evaluates mature judgment, technical leadership, communication, and the ability to articulate mission alignment along with layered risk ...

Behavioral & LeadershipEthics & ResponsibilityProject Deep Dive
40
0
291 people solved
May 12, 2026
Amazon logo
AmazonBloombergMeesho
Medium
Software Engineer

Distinct XOR Results from Three Array Choices

Problem Given an integer array nums, consider every index triple satisfying 0 <= i <= j <= k < nums.length. Its XOR value is: `text nums[i] XOR nums[j...

Coding & AlgorithmsBit ManipulationDynamic Programming
1
0
9 people solved
NVIDIA logo
NVIDIA
Medium
Data EngineerSenior+

Merge Overlapping Time Intervals

You are given a list of closed time intervals. Each interval is represented as [start, end], where start <= end. Write a function that returns the sma...

Coding & Algorithms
4
0
67 people solved
May 3, 2026
Amazon logo
Amazon
Hard
Software EngineerIntern

Find the Largest Rating Threshold Supported by K Instances

Given an array of integer instance ratings, return the largest integer k such that at least k instances have ratings greater than or equal to k. Input...

Coding & AlgorithmsArrays & StringsSorting
4
0
72 people solved
Jan 8, 2026
Zomato logo
Zomato
Medium
Product Manager

Design Special Requests for Restaurant Table Bookings in Zomato's District App

Zomato's District app lets diners reserve tables at restaurants. The team wants diners to be able to attach special requests to a reservation as they ...

Product Design & StrategyProduct Design & ImprovementRequirements & Launch Execution
0
0
6 people solved
Sep 18, 2026
Agoda logo
Agoda
Easy
Data EngineerSenior+ Locked

Return Every Employee with a Mapped or Default Unique ID

Join employees to unique-ID mappings while preserving unmatched employees and applying an explicit fallback identifier.

Data Manipulation (SQL/Python)SQL
3
0
49 people solved
Sep 11, 2026
OpenAI logo
OpenAI
Medium
Software Engineer Locked

Design a Payment Lifecycle from Hold to Charge and Settlement

Model a payment lifecycle that moves safely from a fund hold through charge and asynchronous settlement. This system design probes idempotent transiti...

System DesignPayments & LedgersDistributed Transactions & Idempotency
30
0
279 people solved
Aug 1, 2026
Snapchat logo
Snapchat
Medium
Software Engineer Locked

Find Duplicate Files with a Hand-Written Directory Traversal

Build a duplicate-file finder without recursive walking helpers. This exercise covers iterative directory traversal, bounded-memory content comparison...

Software Engineering FundamentalsTreesOperating Systems
15
1
102 people solved
Jul 21, 2026
Hadrian logo
Hadrian
Hard
Software Engineer Locked

Migrate a Continuously Used Database

Design a migration from Microsoft SQL Server to PostgreSQL while a third-party read-only service runs continuously and one internal client owns writes...

System Design
4
0
47 people solved
May 17, 2026
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
21
0
387 people solved
Mar 1, 2026
Amazon logo
AmazonGoogleMeta

Also asked at Meta, Bloomberg, TCS, Microsoft, TikTok, IBM, Oracle

Easy
Software Engineer

Kth Positive Integer Missing from an Increasing Array

Problem Given the strictly increasing positive array arr,return the kth positive integer absent from it. Missing values may occur before,between,or af...

Coding & AlgorithmsBinary SearchArrays & Strings
1
0
8 people solved
Snowflake logo
Snowflake
Medium
Software Engineer Locked

Traverse All Reachable Pages With Parallel BFS

Return every web page reachable from a starting page in stable breadth-first discovery order, including the start exactly once. Handle cycles, duplica...

Coding & AlgorithmsGraphsStacks & Queues
19
0
179 people solved
Jul 11, 2026
Harvey logo
Harvey
Hard
Software Engineer Locked

Highlight Overlapping Phrases in a Sentence

Given a sentence such as The quick brown fox jumps over the lazy dog. and phrases such as quick brown and brown fox jumps, design a function that retu...

Software Engineering FundamentalsIntervals & SchedulingArrays & Strings
24
1
201 people solved
Jul 26, 2026
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