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

"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_

"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"

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

"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."

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

"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."

CarlosFull Stack, Shopify

"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."

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."

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

"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."

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

"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."

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

"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."

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

_The_TaNk_

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

"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."

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

CarlosFull Stack, Shopify

"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."

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."

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

"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."

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

"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."

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

"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."

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

How to measure harmful-content severity and run experiments

Question You are a Data Scientist working on content integrity / harmful content at a large social media platform (e.g., hate/harassment, self-harm, g...

Analytics & ExperimentationExperiment Design (A/B Testing)Metrics & KPIs

Software Engineer Locked

Design a URL Shortener

This question evaluates a candidate's ability to design scalable, highly available distributed systems, covering competencies in API design, data mode...

Software EngineerSenior+

Zigzag Traversal of a Matrix Along Its Anti-Diagonals

Given an m x n matrix of integers, return all of its elements in zigzag order along the anti-diagonals. Cell (i, j) (row i, column j, both 0-indexed) ...

Coding & AlgorithmsGrids & Matrices

Explain why EDG and why you fit

Prompt You have 4 minutes of total time per question to prepare and answer. You may re-record / answer each question up to 2 times. Answer the followi...

Behavioral & Leadership

Estimate Volatility from Gaussian and Brownian Samples

You are given two statistical estimation problems. 1. Let X_1, ..., X_100 be independent samples from N(0, sigma^2), where the mean is known to be 0 a...

Largest Sum of a BST Rooted Subtree

Problem Among rooted subtrees of the native binary tree, find the largest sum whose entire subtree is a strict binary search tree. Every left descenda...

Coding & AlgorithmsTreesDynamic Programming

8 people solved

Thomson Reuters

Easy

Machine Learning EngineerSenior+

Applied Machine Learning Assessment: Metrics, Evaluation, and NLP Fundamentals

Reason through an applied machine-learning assessment covering annotation agreement, model metrics, reproducibility, NLP basics, ranking metrics, and ...

Campaign Efficiency Metrics and Below-Average CTR

Campaign Efficiency Metrics and Below-Average CTR You are given an ad_campaigns table with one row per campaign: | Column | Type | Meaning | | --- | -...

Data Manipulation (SQL/Python)

Metrics framework for an AI feature: user value, output quality, cost and safety

You are the product manager for a feature or product whose core output comes from an AI model. How would you define the metrics that show whether it i...

Analytics & ExperimentationMetrics & KPIsAI Product Management

Machine Learning Engineer Locked

Train and improve a scikit-learn binary classifier

Evaluates the ability to train, evaluate, and iteratively improve a scikit-learn binary classifier, encompassing model selection, preprocessing, valid...

Machine LearningSupervised LearningModel Evaluation

145 people solved

Dec 15, 2025

Select a Ranked Large Decimal Integer

Problem Each entry in nums is a nonnegative integer represented as a decimal string without leading zeros. Return the representation of the k-th large...

Coding & AlgorithmsSortingMath & Number Theory

Sort a nearly sorted array

Given an array of length $n$ in which every element is at most $k$ positions away from its location in the fully sorted order, design an algorithm...

Coding & AlgorithmsHeaps & Priority QueuesSorting

Compute dasher pay from order event logs

You are given a list of delivery-order event records for a single dasher. Each record contains: - order_id - event_type in {CREATED, ACCEPTED, PICKED_...

Coding & AlgorithmsSimulation & State Machines

Compute decay, OLS, and classic probability results

You are asked several probability/statistics questions. 1) Radioactive decay (half-life) A radioactive atom has a half-life of 1 day. Assume each atom...

Statistics & MathProbabilityRegression & Statistical Modeling

Find the Shortest Contiguous Segment Reaching a Sum Threshold

Problem Return the minimum length of a nonempty contiguous segment of nums whose sum is at least k. Return -1 if no segment qualifies. Values may be n...

Coding & AlgorithmsStacks & QueuesArrays & Strings

Apply commands to transform a matrix

You are given an integer matrix A of size n × m and a list of string commands to apply in order. Implement the commands and return the final matrix. C...

Coding & AlgorithmsGrids & Matrices

PM behavioral: a past-role pain point you'd avoid and how you'd handle it next time

A hiring manager at Datavant, interviewing you for a product manager role, asks which challenges from your previous role you want to avoid in your nex...

Behavioral & LeadershipFailure & LearningMotivation & Fit

Introduce yourself and discuss resume details

Behavioral Interview Prompt: Self-Introduction, Resume Walkthrough, Project Deep Dives, Collaboration, and Questions What to Deliver - Self-introducti...

Behavioral & LeadershipProject Deep Dive

Optimize CUDA GEMM with tiling and coalescing

CUDA Execution Model, Memory Hierarchy, and GEMM Kernel Design You are interviewing for a Data Scientist / GPU-software role at NVIDIA. The interviewe...

Coding & AlgorithmsGPU Programming

Design and Implement a Worker Thread Pool with Futures and Shutdown

Design and implement a thread pool: a fixed set of worker threads that run tasks submitted by other threads, so the application does not start a new t...

Software Engineering FundamentalsConcurrencyLow-Level Design (OOP)

20 people solved

Apr 2, 2026

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Tech Interview Questions

How to measure harmful-content severity and run experiments

Design a URL Shortener

Zigzag Traversal of a Matrix Along Its Anti-Diagonals

Explain why EDG and why you fit

Estimate Volatility from Gaussian and Brownian Samples

Largest Sum of a BST Rooted Subtree

Applied Machine Learning Assessment: Metrics, Evaluation, and NLP Fundamentals

Campaign Efficiency Metrics and Below-Average CTR

Metrics framework for an AI feature: user value, output quality, cost and safety

Train and improve a scikit-learn binary classifier

Select a Ranked Large Decimal Integer

Sort a nearly sorted array

Compute dasher pay from order event logs

Compute decay, OLS, and classic probability results

Find the Shortest Contiguous Segment Reaching a Sum Threshold

Apply commands to transform a matrix

PM behavioral: a past-role pain point you'd avoid and how you'd handle it next time

Introduce yourself and discuss resume details

Optimize CUDA GEMM with tiling and coalescing

Design and Implement a Worker Thread Pool with Futures and Shutdown

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