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

Amazon

Medium

Applied Scientist Locked

Implement Stable Sigmoid, Softmax, and Scaled Dot-Product Attention

Implement numerically stable sigmoid, softmax, and single-head scaled dot-product attention using elementary arithmetic and loops. The discussion cove...

Machine LearningTransformers & AttentionML Coding

Machine Learning Engineer

Implement ordering with dependency constraints

You are given n items labeled 0..n−1 and a list of precedence constraints edges[i] = [u, v] meaning u must appear before v. Return a valid ordering of...

Coding & AlgorithmsGraphsHeaps & Priority Queues

Software Engineer Locked

Debug a slow concurrent network server under load

This question evaluates debugging and performance-tuning skills for concurrent network servers, focusing on event-loop behavior, I/O multiplexing, blo...

Software Engineering FundamentalsDebuggingOperating Systems

Compute a Three-Term Recurrence

Problem Define T0=0, T1=1, T2=1 and, for every i>=0, T(i+3)=Ti+T(i+1)+T(i+2). Return Tn for the supplied n. `cpp class Solution { public: int trib...

Coding & AlgorithmsDynamic ProgrammingMath & Number Theory

10 people solved

OpenAI

Hard

Machine Learning Engineer

Build and troubleshoot image classification and backprop

Build and troubleshoot image classification and backprop CIFAR-like Noisy Dataset: Baseline, Data Quality Plan, and First-Principles Backprop Context:...

Machine LearningML CodingAnnotation & Label Quality

715 people solved

Jul 27, 2025

Optimize ribbon piece length by binary search

Given an array lengths of positive integers and an integer k, you may cut each element into pieces of integer length L > 0. Find the maximum L such th...

Handle an irate passenger after flight delay

Role-Play: Irregular Operations Recovery and Communication Plan Scenario - A flight is delayed 5 hours due to a crew time-out cascading from weather a...

Behavioral & LeadershipCommunication & StakeholdersConflict & Collaboration

Software Engineer Locked

Find linked user records by weighted similarity

This question evaluates skills in similarity-based record linkage, weighted field scoring, and graph connectivity analysis within the Coding & Algorit...

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

21 people solved

Intuit

Medium

Software Engineer Locked

Find largest file in a directory using Bash

This question evaluates a candidate's proficiency with shell scripting and Unix command-line concepts, including recursive file-system traversal, reco...

Software Engineering Fundamentals

Software Engineer Locked

Design and implement an LRU cache

This question evaluates knowledge of data structures, algorithmic design, API design, and memory/resource management required to implement an efficien...

Coding & AlgorithmsData Structure DesignLinked Lists

157 people solved

Feb 8, 2026

Choose the Longest Set of Words with No Repeated Characters

Choose a subset of lowercase words whose concatenation contains no repeated characters, then maximize its total length. Account for words that contain...

Implement LRU and target-sum combinations

Implement LRU and target-sum combinations Design and implement the following: 1) An in-memory cache with Least Recently Used (LRU) eviction supporting...

Coding & AlgorithmsData Structure DesignBacktracking & Recursion

Solve four classic algorithm problems

You are given four independent coding tasks. For each task, implement the required function. --- Problem 1: Zigzag level-order traversal of a binary t...

Coding & AlgorithmsDynamic ProgrammingTrees

Data ScientistSenior+

Feed Module Impressions, Clicks and CTR on Web Platforms Over a 7-Day Window

A news portal's homepage is made of content modules, and a daily traffic table records how often each article was shown and clicked in each module on ...

Data Manipulation (SQL/Python)SQL

Review getEvents endpoint for readability, performance, scalability, security

Question You are given a code snippet that implements an HTTP GET /events handler (getEvents). The handler queries events from a database and, for eac...

System DesignCode Quality & MaintainabilityApplication Security

Spot US Market Gaps for a New Electric Vehicle Challenger to Tesla

Imagine you are founding a company that will take on Tesla in the United States. Identify the market opportunities you see: where Tesla leaves custome...

Product Design & StrategyMarket & Competitive AnalysisProduct Strategy

Count subarrays with at least k fruit pairs

Given an integer array nums where each value denotes a fruit type, and an integer k: For any subarray, define a 'pair' for fruit value v if its freque...

Coding & AlgorithmsTwo Pointers & Sliding WindowArrays & Strings

155 people solved

Sep 6, 2025

Behavioral: Cross-Functional Disagreement and a Manager Conflict You Got Wrong

This is a behavioral round in a senior to staff-level software engineering loop. The interviewer asks about two conflicts with different power dynamic...

Behavioral & LeadershipConflict & CollaborationFailure & Learning

Find most co‑purchased product pairs in SQL

Given the schema and sample data below, write ANSI-SQL to return the top 5 unordered product pairs most frequently purchased together across distinct ...

Data Manipulation (SQL/Python)SQLIndexing & Query Performance

204 people solved

Oct 13, 2025

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Tech Interview Questions

Implement Stable Sigmoid, Softmax, and Scaled Dot-Product Attention

Implement ordering with dependency constraints

Debug a slow concurrent network server under load

Compute a Three-Term Recurrence

Build and troubleshoot image classification and backprop

Optimize ribbon piece length by binary search

Handle an irate passenger after flight delay

Find linked user records by weighted similarity

Zigzag Traversal of a Matrix Along Its Anti-Diagonals

Find largest file in a directory using Bash

Design and implement an LRU cache

Choose the Longest Set of Words with No Repeated Characters

Implement LRU and target-sum combinations

Solve four classic algorithm problems

Feed Module Impressions, Clicks and CTR on Web Platforms Over a 7-Day Window

Review getEvents endpoint for readability, performance, scalability, security

Spot US Market Gaps for a New Electric Vehicle Challenger to Tesla

Count subarrays with at least k fruit pairs

Behavioral: Cross-Functional Disagreement and a Manager Conflict You Got Wrong

Find most co‑purchased product pairs in SQL

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