Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions

12.2k

Companies

569

Updated

10.14.2026

12.2k Questions 569 Companies10.14.2026

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

DoorDash

Medium

Software Engineer

Compute Driver Pay with Double-Pay Windows

You are building payroll logic for a delivery platform. Given a list of order records for one delivery driver, compute the total amount the driver sho...

Data Scientist Locked

Model Shot Success by Location

This question evaluates a candidate's skill in spatial probabilistic modeling, feature engineering, calibration, uncertainty quantification, and handl...

Machine Learning Engineer

Solve a 9x9 Sudoku puzzle

Given a partially filled 9×9 Sudoku board, fill the empty cells so that the completed board is valid. A valid Sudoku satisfies: - Each row contains di...

Coding & AlgorithmsBacktracking & RecursionGrids & Matrices

Software Engineer Locked

Check whether an integer is a power of two

This question evaluates proficiency in bit-level reasoning and integer arithmetic, specifically understanding binary representations and the propertie...

Coding & AlgorithmsBit Manipulation

Determine Optimal Dasher Compensation Model and Diagnose Metric Drops

Determine Optimal Dasher Compensation Model and Diagnose Metric Drops Time-Based Dasher Pay Pilot and Marketplace Root-Cause Analysis Context DoorDash...

Analytics & ExperimentationExperiment Design (A/B Testing)Metric Diagnostics

Write SQL for streaming cohort metrics

Given the schema and sample data below, write SQL to answer the three tasks. Use standard SQL (window functions allowed). Assume timestamps are UTC. T...

Data Manipulation (SQL/Python)

Analyze User Flags and Review Outcomes for Moderation Prioritization

Data Manipulation (SQL/Python)

Software EngineerIntern

Manipulate time-series with Pandas groupby

Given a DataFrame events(user_id, event_type, ts_utc, revenue): 1) Parse ts_utc as timezone-aware, convert to America/Los_Angeles, and handle DST tran...

Data Manipulation (SQL/Python)

33 people solved

Aug 10, 2025

Easy

Machine Learning Engineer Locked

Compute point-to-segment minimum distance

This question evaluates understanding of computational geometry and numerical robustness, testing the ability to compute Euclidean distances between a...

Coding & AlgorithmsMath & Number Theory

Find shortest subarray to restore order

Given an integer array, find the shortest contiguous segment which, if sorted in ascending order, makes the entire array non-decreasing. Return the le...

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

Transform tree with subtree sum mapping

Transform tree with subtree sum mapping You are given the roots of two complete binary trees T1 and T2 that have identical structure (same shape and n...

Implement a high-throughput web crawler safely

Design and code (pseudocode acceptable) a multi-threaded web crawler that favors breadth-first discovery while continuously running analysis tasks on ...

Coding & AlgorithmsSystem Design FundamentalsConcurrency

Address Fraud Detection with Imbalance and Concept Drift Solutions

Address Fraud Detection with Imbalance and Concept Drift Solutions You are building a fraud-detection model for an online payments product that must s...

Implement a Reusable Cyclic Barrier from a Mutex and Condition Variables

Implement a cyclic barrier. The barrier is created for a fixed number of threads, called parties. Each thread calls wait() when it reaches a synchroni...

Software Engineering FundamentalsConcurrency

Software Engineer Locked

Find first and last occurrence in sorted array

This question evaluates proficiency in array search algorithms and algorithmic reasoning, specifically the use of binary search techniques and careful...

Implement plurality and majority voting

You are given an array votes of length n, where each element is a candidate identifier (string or integer). Implement two voting systems: 1) Plurality...

Machine Learning Engineer

Design a streaming embedding-based classifier

You are given a continuously arriving stream of text data for a classification task. Design an end-to-end machine learning system that: 1. processes r...

ML System DesignNatural Language ProcessingFeature Engineering

Explain core components of reinforcement learning

In reinforcement learning, we model an agent that interacts with an environment over time. The agent observes the state of the environment, takes acti...

Deep-dive a project and show ownership

You will be asked to do a deep dive on one or two past projects. The interviewer(s) may probe heavily on technical details and leadership behaviors. P...

Behavioral & Leadership

79 people solved

Feb 12, 2026

Tech Interview Questions

Compute Driver Pay with Double-Pay Windows

Model Shot Success by Location

Solve a 9x9 Sudoku puzzle

Check whether an integer is a power of two

Determine Optimal Dasher Compensation Model and Diagnose Metric Drops

Write SQL for streaming cohort metrics

Analyze User Flags and Review Outcomes for Moderation Prioritization

Manipulate time-series with Pandas groupby

Compute point-to-segment minimum distance

Find shortest subarray to restore order

Introduce yourself and discuss resume details

Transform tree with subtree sum mapping

Implement a high-throughput web crawler safely

Address Fraud Detection with Imbalance and Concept Drift Solutions

Implement a Reusable Cyclic Barrier from a Mutex and Condition Variables

Find first and last occurrence in sorted array

Implement plurality and majority voting

Design a streaming embedding-based classifier

Explain core components of reinforcement learning

Deep-dive a project and show ownership

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