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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 testimonial
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_ testimonial
_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"

Chris testimonial
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 testimonial
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."

Jake testimonial
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 testimonial
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."

Carlos testimonial
CarlosFull Stack, Shopify

"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."

boba.tea.vibes testimonial
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."

Andy testimonial
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 testimonial
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."

Shruti testimonial
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 testimonial
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."

Bianca testimonial
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 testimonial
tambrahm007

"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."

toa testimonial
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 testimonial
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_ testimonial
_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"

Chris testimonial
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 testimonial
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."

Jake testimonial
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 testimonial
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."

Carlos testimonial
CarlosFull Stack, Shopify

"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."

boba.tea.vibes testimonial
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."

Andy testimonial
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 testimonial
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."

Shruti testimonial
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 testimonial
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."

Bianca testimonial
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 testimonial
tambrahm007

"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."

toa testimonial
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
OpenAI logo
OpenAI
Hard
Software EngineerNew Grad

Follow One-Way Links to the Endpoint Node or the Last Node Before a Loop Closes

A simple network is made of nodes joined by one-way links. Each node links to at most one other node, in a single forward direction. Starting from a g...

Coding & AlgorithmsGraphs
36
0
591 people solved
Oct 6, 2026
Databricks logo
Databricks
Hard
Software Engineer

Design an Online Bookstore System

Design a bookstore system. The report gives only this one-word prompt, so settle the scope with the interviewer first. A common reading is an online b...

System DesignSystem Design FundamentalsDistributed Transactions & Idempotency
7
0
135 people solved
Oct 19, 2026
OpenAI logo
OpenAI
Hard
Software Engineer

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)
16
0
136 people solved
Oct 18, 2026
Rippling logo
Rippling
Medium
Software Engineer

Schedule Employee Field Changes with Effective Dates and History

Extend an HR application's employee Edit tab so a user can schedule future changes to manager, department, salary, and title. Persist them in the exis...

Software Engineering FundamentalsSystem Design FundamentalsDistributed Transactions & Idempotency
4
0
60 people solved
Nov 3, 2026
Citadel logo
Citadel
Medium
Software Engineer

Reach Every Target Position from One Chosen Start Using Repeatable Trades

You are given a list of target positions and a list of trades. A position is a point (x, y) with integer coordinates, and a trade (dx, dy) moves a pos...

Coding & AlgorithmsMath & Number Theory
14
0
125 people solved
Oct 17, 2026
Rippling logo
Rippling
Medium
Software Engineer

Design Product Analytics for Billion-Event Daily Ingestion

Design an in-house product analytics system for mobile and web applications. Provide an SDK and ingestion API, enrich and store events, support fast m...

System DesignSystem Design FundamentalsBatch & Stream Processing
3
0
53 people solved
Nov 3, 2026
Netflix logo
Netflix
Medium
Software EngineerSenior+

Implement an in-memory key-value store with per-key TTL expiration and tests

In a phone screen, implement an in-memory key-value store in which every entry expires after its own time-to-live (TTL). Implement the usual operation...

Software Engineering FundamentalsData Structure DesignTesting & Quality
53
1
552 people solved
Oct 14, 2026
OpenAI logo
OpenAI
Medium
Software Engineer

Sliding-Window Chat Analytics: Recent Counts, Live Sessions, Out-of-Order Events

Build an in-memory, single-threaded analytics service for chat sessions. It consumes a real-time stream of interaction log records, and each record ha...

Software Engineering FundamentalsData Structure DesignStacks & Queues
79
2
571 people solved
Oct 10, 2026
Google logo
Google
Medium
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
4
0
33 people solved
Nov 10, 2026
Databricks logo
Databricks
Hard
Software Engineer

Fastest Single-Mode Commute Across a Grid of Mode-Restricted Blocks

A city map is a grid of blocks. You must commute from your start block to your destination block using exactly one transport mode for the whole trip, ...

Coding & AlgorithmsGrids & MatricesGraphs
12
1
111 people solved
Oct 19, 2026
Google logo
Google
Hard
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
2
0
32 people solved
Nov 10, 2026
Oracle logo
Oracle
Medium
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
7
0
72 people solved
Oct 28, 2026
Google logo
Google
Medium
Software EngineerIntern

Maximum Value from Unit-Weight Items with Limited Copies Under a Capacity

You are packing items into a bag that can hold a total weight of at most capacity. There are n item types. Every copy of item type i weighs exactly 1 ...

Coding & AlgorithmsGreedySorting
68
1
550 people solved
Oct 9, 2026
Anthropic logo
Anthropic
Medium
Software Engineer

Design a Parallel and Resumable Model Downloader

Design a model downloader that downloads a model artifact in parallel pieces, resumes interrupted work, and makes a complete model available to its co...

System DesignFile & Media StorageAPI Integration & HTTP Clients
27
0
443 people solved
Oct 5, 2026
Google logo
GoogleAmazonMicrosoft

Also asked at Microsoft, Bloomberg, Meta, TCS, Infosys, Accenture, Yandex, BCG, Cognizant, IBM, Capital One, Deloitte, Oracle, Morgan Stanley, Qualcomm, SAP, Zoho

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
19
3
171 people solved
Google logo
Google
Easy
Software EngineerIntern

Count Tree Nodes Greater Than Every Cross-Subtree Pair Sum and Product

Given a binary tree of integers, count the nodes whose value is larger than every sum and every product that can be formed by taking one value from th...

Coding & AlgorithmsTrees
4
0
38 people solved
Nov 8, 2026
Amazon logo
Amazon
Medium
Software EngineerNew Grad

Find Every Listed Word That Can Be Traced Through Adjacent Cells of a Letter Grid

Given a grid of lowercase letters and a list of words, return every word from the list that can be traced through the grid. A word is traced by starti...

Coding & AlgorithmsBacktracking & RecursionGrids & Matrices
2
0
27 people solved
Nov 11, 2026
Snowflake logo
Snowflake
Medium
Software Engineer

Stack with Constant-Time Minimum over a Sequence of Operations

Design a stack that supports pushing an element, popping the top element, reading the top element, and reading the smallest element currently in the s...

Coding & AlgorithmsData Structure DesignStacks & Queues
22
0
259 people solved
Oct 17, 2026
Google logo
Google
Medium
Software EngineerIntern

Count Failing, Passing, and Honor-Roll Scores

Given test scores, return three counts in this order: failing, passing without honor roll, and honor roll. A score below50 fails. A score above80 is h...

Coding & AlgorithmsArrays & Strings
10
0
76 people solved
Oct 22, 2026
Roblox logo
Roblox
Medium
Software EngineerNew Grad

Number Line Obstacles: Check Whether a Centered Block Can Be Built

You are working on an infinite integer number line that starts with no obstacles. Process a sequence of operations of two types: - [1, x] builds an ob...

Coding & AlgorithmsBinary Search
58
1
516 people solved
Oct 3, 2026
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