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

Oracle

Medium

Backend EngineerSenior+ Locked

Explain a Difficult Technical Decision

Present a difficult technical decision through its competing options, constraints, evidence, stakeholders, decision rule, outcome, and the conditions ...

Behavioral & Leadership

Making a Specific, Credible Case for Joining Perplexity as a Product Manager

You are interviewing for a product manager role at Perplexity. Explain why you want to work there rather than at another AI or search company. `hint E...

Behavioral & LeadershipMotivation & Fit

Machine Learning Engineer

Validate virtual credit card transactions from encoded IDs

You are designing logic for a virtual credit card product. Part 1: Product reasoning Explain key benefits and drawbacks of virtual credit cards for: -...

How LLM training data is sourced, labeled and quality-checked at each training stage

Tell me what you know about gathering and labeling the data that large language models are trained on. `hint Split by stage A model learns from differ...

Machine LearningAI Product ManagementAnnotation & Label Quality

12 people solved

Jun 3, 2026

Behavioral: Pursuing a Project That Colleagues Expected to Fail

In a product manager interview, you are asked to describe a project or goal you pursued while the people around you expected it to fail. Use one real ...

Behavioral & LeadershipLeadership & InfluenceAmbiguity & Decision Making

Software Engineer Locked

Compress Consecutive Characters with Run Lengths

Implement compress_runs(s) and return the compressed string. Work through the function contract, boundary cases, correctness argument, and time and sp...

Largest Integer with a Maximum Digit-Square Score

Problem You are given positive integers num and sum. Consider positive integers with exactly num decimal digits whose digits add up to exactly sum. An...

Coding & AlgorithmsGreedyMath & Number Theory

Multi-Restaurant Orders on Zomato: Go/No-Go Call and Launch Plan

Zomato is weighing whether customers should be able to order from more than one restaurant in a single order. Make the call, and then either design th...

Product Design & StrategyProduct Design & ImprovementMetrics & KPIs

Software EngineerIntern

Solve Grid and Counting Problems

A software engineering intern phone screen included two coding tasks: 1. Count islands in a grid Given an m x n grid of characters where '1' repres...

Coding & Algorithms

433 people solved

Jan 25, 2025

GoogleBloombergMetaAmazon

Easy

Software Engineer

Add an Integer to a Number Represented as Decimal Digits

Problem The array num stores a nonnegative integer's decimal digits from most significant to least significant. Return the decimal digit array for tha...

Coding & AlgorithmsMath & Number TheoryArrays & Strings

10 people solved

Arm

Medium

Backend EngineerIntern

Describe leadership, AI perspective, and challenges

In a prerecorded video interview for an implementation-related engineering intern role, you may be asked several behavioral questions: 1. Describe a t...

Behavioral & Leadership

Fully Expand Replacement Placeholders

Problem You are given replacements, a list of [key, value] pairs, and a string text. Each key is a unique uppercase English letter. A placeholder such...

Coding & AlgorithmsParsing & InterpretersGraphs

Disney+ Metric Drop: Diagnosing a Sudden 10% Fall in Watch Time on a Recommendation Row

You are the product manager who owns the "Recommended for you" row in the Disney+ app, the personalized strip of titles on the home screen. You notice...

Analytics & ExperimentationMetric DiagnosticsUser Behavior & Funnels

Data ScientistSenior+

Convert Dictionary to DataFrame

Using Python and pandas, convert the following dictionary into a DataFrame. Each top-level key is a target column name, and each value is a list of [r...

Data Manipulation (SQL/Python)

Software Engineer Locked

Find a Horizontal Cut That Bisects Rectangle Area

Solve a computational-geometry problem that asks for the horizontal line dividing the combined area of many disjoint rectangles in half. The exercise ...

Coding & AlgorithmsBinary SearchMath & Number Theory

Support Dynamic Range Sums

Implement a data structure over an integer array nums. Part 1: If the array never changes, support sumRange(left, right) that returns the sum of eleme...

Describe a challenging project

Behavioral Question Describe one project you worked on that was particularly challenging. Please cover: - Context: What was the goal and your role/own...

Behavioral & LeadershipProject Deep Dive

Find duplicate files and apply image operations

Part A — Find duplicate files by content You are given a list of directory records. Each record is a string describing a directory path followed by on...

Coding & AlgorithmsArrays & StringsGrids & Matrices

Implement LRU and LFU caches

Implement two in-memory cache classes with fixed capacity: 1. Recent-use cache - get(key): return the value for key, or -1 if the key does not exis...

Coding & AlgorithmsData Structure Design

Count Integers With an Even Decimal Length

Problem Return how many positive integers in nums have an even number of decimal digits. Count each input occurrence separately. `cpp class Solution {...

Coding & AlgorithmsMath & Number Theory

9 people solved

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Tech Interview Questions

Explain a Difficult Technical Decision

Making a Specific, Credible Case for Joining Perplexity as a Product Manager

Validate virtual credit card transactions from encoded IDs

How LLM training data is sourced, labeled and quality-checked at each training stage

Behavioral: Pursuing a Project That Colleagues Expected to Fail

Compress Consecutive Characters with Run Lengths

Largest Integer with a Maximum Digit-Square Score

Multi-Restaurant Orders on Zomato: Go/No-Go Call and Launch Plan

Solve Grid and Counting Problems

Add an Integer to a Number Represented as Decimal Digits

Describe leadership, AI perspective, and challenges

Fully Expand Replacement Placeholders

Disney+ Metric Drop: Diagnosing a Sudden 10% Fall in Watch Time on a Recommendation Row

Convert Dictionary to DataFrame

Find a Horizontal Cut That Bisects Rectangle Area

Support Dynamic Range Sums

Describe a challenging project

Find duplicate files and apply image operations

Implement LRU and LFU caches

Count Integers With an Even Decimal Length

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