Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions

1.5k

Companies

980

Updated

11.12.2026

1.5k 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

Waymo

Easy

Software Engineer

Minimum Run Time for Reorderable Tasks with a Per-Type Cooldown

A single worker must run a set of tasks, each labeled by its type, an uppercase letter, given as a string such as "ABBCC". Two tasks of the same type ...

Coding & AlgorithmsGreedy

Same-Hostname Web Crawler: Single-Threaded, Then Multithreaded

Implement a web crawler. You are given a start URL and an HTML parser that fetches a page and returns the links on it. Starting from the start URL, fi...

Software Engineering FundamentalsConcurrencyGraphs

263 people solved

Oct 26, 2026

GoogleAmazonMicrosoft

Medium

Software Engineer

Measure the Longest Segment of Distinct Characters

Problem Given the string text, return the greatest length of a contiguous substring whose characters are all different. Return a length, not the subst...

Coding & AlgorithmsTwo Pointers & Sliding WindowArrays & Strings

532 people solved

OpenAI

Hard

Machine Learning Engineer

Two-Player Three-Card Poker Simulation: Deal Hands and Decide the Winner

Write a small poker simulation for exactly two players. Deal each player three cards from a shuffled standard 52-card deck, work out which kind of han...

Software Engineering FundamentalsSimulation & State Machines

Software EngineerIntern

Daily Totals of Several Stocks' Prices with Missing Days Carried Forward

Several companies report stock prices, each only on some days. For every date that appears anywhere in the input, compute the total of all companies' ...

Coding & AlgorithmsArrays & StringsSorting

Software EngineerSenior+

Map Uniform Draws to Indices for Weighted Random Selection

An index of a list of positive integer weights is to be chosen at random, with each index chosen with probability proportional to its weight. In an in...

Coding & AlgorithmsBinary SearchArrays & Strings

194 people solved

Oct 24, 2026

AmazonGoogleMicrosoft

Medium

Software Engineer

Return a Longest Palindromic Slice

Problem Given the string text, return a contiguous substring of maximum length whose characters read identically from left to right and from right to ...

Coding & AlgorithmsArrays & StringsTwo Pointers & Sliding Window

Locate the Middle Value Across Two Sorted Inputs

Problem Two integer arrays, first and second, are already sorted in nondecreasing order. Return the median of the values in their combined multiset, r...

Coding & AlgorithmsBinary Search

Render a GeoJSON Bike Ride with Markers and Alternating Paths via a Map API

You are given a local file, ride-simple.json, that holds a bicycle ride as GeoJSON, and a static map rendering service called staticmap. The service t...

Software Engineering FundamentalsAPI Integration & HTTP ClientsArrays & Strings

Software EngineerIntern

Virtual Card Case Study: Trade-offs, Card Number Rule Checks, and Debugging a Filter

You are working through a technical case study about virtual credit card numbers. A virtual card number is a card number that the issuer generates on ...

Software Engineering FundamentalsDebuggingPayments & Ledgers

1068 people solved

Sep 18, 2026

GoogleAmazonBloomberg

Easy

Software Engineer

Find the Shared Starting String

Problem Given a nonempty array words of strings, return the longest string that occurs at the start of every array element. If the strings have no non...

Coding & AlgorithmsArrays & Strings

Compute User Trust Scores from Activity Logs, Then Merge Each User's History

Given a log of user activity, compute a trust score for every user in it. The exercise has two coding parts followed by a discussion. First, compute t...

Software Engineering FundamentalsArrays & StringsBatch & Stream Processing

Total Run Time of Ordered Tasks with a Per-Type Cooldown

A single worker runs a list of tasks in exactly the order given. Each task is labeled by its type, an uppercase letter, so the list is a string such a...

Coding & AlgorithmsSimulation & State MachinesArrays & Strings

Code a poker game: model cards, rank five-card hands and pick the winners

Code a poker game. The report names this coding exercise only as "poker game", so settle the scope with the interviewer before writing code. In its us...

Software Engineering FundamentalsLow-Level Design (OOP)

Software EngineerSenior+

Fill %KEY% Placeholders in a Template String from a Dictionary

Given a template string text and a dictionary mapping from keys to values, return the string obtained by replacing every placeholder in text with the ...

Coding & AlgorithmsArrays & Strings

Machine Learning Engineer

Group Consecutive Piano Notes into Hand Positions and Assign Fingers

A pianist plays a melody with one hand. Notes are integers, where consecutive integers are adjacent keys. The hand's five fingers cover five adjacent ...

Coding & AlgorithmsArrays & Strings

32 people solved

Nov 10, 2026

GoogleAmazonMicrosoft

Easy

Software Engineer

Check a Decimal Integer for Symmetry

Problem Decide whether the decimal representation of the signed integer number reads identically from left to right and from right to left. Return tru...

Coding & AlgorithmsMath & Number Theory

Shortest Substring Containing All Pattern Characters with Repeats

Given a string s and a pattern t, return the shortest contiguous substring of s that contains every character of t, counting repeats: if a character a...

Coding & AlgorithmsTwo Pointers & Sliding Window

Dasher Pay from Concurrent Orders with Double-Pay Time Windows

A Dasher (a delivery driver) is paid for the time they spend carrying orders, and the pay grows with the number of orders they carry at once. During a...

Coding & AlgorithmsIntervals & Scheduling

Software EngineerSenior+

Rotate a Matrix by Any Multiple of 90 Degrees, In Place Where the Shape Allows

Rotate a 2-D integer matrix by a given angle. The core case is a square n × n matrix turned 90 degrees clockwise in place: rearrange the values inside...

Coding & AlgorithmsGrids & Matrices

72 people solved

Oct 28, 2026

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Tech Interview Questions

Minimum Run Time for Reorderable Tasks with a Per-Type Cooldown

Same-Hostname Web Crawler: Single-Threaded, Then Multithreaded

Measure the Longest Segment of Distinct Characters

Two-Player Three-Card Poker Simulation: Deal Hands and Decide the Winner

Daily Totals of Several Stocks' Prices with Missing Days Carried Forward

Map Uniform Draws to Indices for Weighted Random Selection

Return a Longest Palindromic Slice

Locate the Middle Value Across Two Sorted Inputs

Render a GeoJSON Bike Ride with Markers and Alternating Paths via a Map API

Virtual Card Case Study: Trade-offs, Card Number Rule Checks, and Debugging a Filter

Find the Shared Starting String

Compute User Trust Scores from Activity Logs, Then Merge Each User's History

Total Run Time of Ordered Tasks with a Per-Type Cooldown

Code a poker game: model cards, rank five-card hands and pick the winners

Fill %KEY% Placeholders in a Template String from a Dictionary

Group Consecutive Piano Notes into Hand Positions and Assign Fingers

Check a Decimal Integer for Symmetry

Shortest Substring Containing All Pattern Characters with Repeats

Dasher Pay from Concurrent Orders with Double-Pay Time Windows

Rotate a Matrix by Any Multiple of 90 Degrees, In Place Where the Shape Allows

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