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

Google

Medium

Software EngineerNew Grad Locked

Reason About an Endpoint-Only Interval Score

Derive why an interval-minus-interior score depends only on its endpoints, then solve the linear selection problem while making tied-index behavior ex...

Software Engineering Fundamentals

Data ScientistIntern Locked

Compute the Arc Length of a Curve

Derive the exact arc length of y = (2/3)x^(3/2) + 1 on [0, 1], showing the derivative, integral setup, and evaluation.

Skip-Level Behavioral: Commitment, Working With PMs and EMs, and Following Up on SLAs

A skip-level manager ran this round. The interviewer opened by describing the mindset the team expects: a commitment to getting things done. Not knowi...

Behavioral & LeadershipProject Deep DiveOwnership & Execution

Software EngineerSenior+

Count the Steps at Which Set Bits Form an Exact Prefix of Ones

A binary string of length n has positions numbered 1 to n, and every bit starts as 0. The process runs for n steps: at step i (counting from 1), the b...

Coding & AlgorithmsArrays & Strings

Software EngineerIntern Locked

Solve array duplicates and two-type subarray

These problems evaluate proficiency with array manipulation, frequency and membership reasoning, and algorithmic analysis of time and space complexity...

Coding & AlgorithmsArrays & StringsTwo Pointers & Sliding Window

Software Engineer Locked

Longest Substring Without Repeating Characters

This question tests a software engineer's ability to apply sliding window techniques and string manipulation to optimize character uniqueness tracking...

Data Scientist Locked

Compute Parking Clustering Probability and P-Value

This question evaluates combinatorial probability and hypothesis-testing skills, specifically counting-based calculation of exact probabilities under ...

Aggregate radiology spend and derive fiscal month

Using Python/pandas, complete the tasks below. Assume the following CSV-like input, where service_dt is object dtype and amounts may be negative (adju...

Data Manipulation (SQL/Python)

Compute Minimum Parentheses Additions

Given a string s consisting only of the characters '(' and ')', compute the minimum number of parentheses that must be inserted anywhere in the string...

Diagnose DAU drop with SQL by country

Write a single SQL query to diagnose a country-level DAU drop for an email product. Assume today is 2025-09-01. DAU is the count of distinct user_id w...

Data Manipulation (SQL/Python)

Design a GPT chat UI with snapshots and sharing

System Design: End-to-End Web App for Interacting with a GPT-like Model Context You are designing a multi-tenant, browser-based SaaS application that ...

System DesignReal-Time SystemsLLM Applications

Machine Learning Engineer Locked

Find the First Working Version

This question evaluates understanding of search algorithms, version normalization, and monotonic predicates, along with competency in parsing and orde...

Machine Learning Engineer

Implement n-gram model and select n

Implement n-gram model and select n Task: Implement an n-gram Language Model with Training, Sampling, and Model Selection Guidance Objective Implement...

Machine LearningNatural Language ProcessingML Coding

Optimize QA Benchmarks and Shared HPC Usage

A Software QA workflow runs benchmarks on shared high-performance computing (HPC) resources. How would you reduce resource usage and shorten turnaroun...

Software Engineering FundamentalsTesting & QualityJob Scheduling & Workflows

Data Scientist Locked

Give Evidence-Based Strengths, Weaknesses, and Feedback

Answer strengths, weaknesses, manager and peer feedback, and project-learning questions with one evidence-based narrative that shows self-awareness an...

Behavioral & LeadershipSelf-Awareness & Growth

Software Engineer Locked

Many-to-Many Schema Design With a Join Table, Composite Primary Key, and Queries

A database schema and SQL question that asks you to model a many-to-many relationship between documents and tags with a join table and a composite pri...

Data Manipulation (SQL/Python)SQLIndexing & Query Performance

Software Engineer Locked

Determine Whether an Undirected Graph Is 3-Colorable

Determine whether a possibly disconnected undirected graph with up to 20 vertices can be colored using at most three colors so that adjacent vertices ...

Diagnose and fix underperforming ML model

Rapidly Improving Recall Under Class Imbalance (One-Day Plan) Context You inherit a binary fraud detection model with severe class imbalance (positive...

Machine LearningModel EvaluationML Fundamentals

Compute shipping cost with tiered pricing

You are building a shipping-cost calculator. Each order contains line items, and shipping rules vary by destination country and product. Assume: - Ord...

Coding & Algorithms

193 people solved

Feb 16, 2025

Merge Three Sorted Arrays Without Duplicates

Merge Three Sorted Arrays Without Duplicates You are given three integer arrays sorted in nondecreasing order. Merge them into one sorted array that c...

Coding & Algorithms

30 people solved

Mar 2, 2026

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Tech Interview Questions

Reason About an Endpoint-Only Interval Score

Compute the Arc Length of a Curve

Skip-Level Behavioral: Commitment, Working With PMs and EMs, and Following Up on SLAs

Count the Steps at Which Set Bits Form an Exact Prefix of Ones

Solve array duplicates and two-type subarray

Longest Substring Without Repeating Characters

Compute Parking Clustering Probability and P-Value

Aggregate radiology spend and derive fiscal month

Compute Minimum Parentheses Additions

Diagnose DAU drop with SQL by country

Design a GPT chat UI with snapshots and sharing

Find the First Working Version

Implement n-gram model and select n

Optimize QA Benchmarks and Shared HPC Usage

Give Evidence-Based Strengths, Weaknesses, and Feedback

Many-to-Many Schema Design With a Join Table, Composite Primary Key, and Queries

Determine Whether an Undirected Graph Is 3-Colorable

Diagnose and fix underperforming ML model

Compute shipping cost with tiered pricing

Merge Three Sorted Arrays Without Duplicates

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