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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
Ramp logo
Ramp
Medium
Software Engineer

Find an Exit in a URL Maze

You are given a starting URL for a web-based maze. Each URL represents one room in the maze. Your task is to write a program that discovers whether th...

Coding & AlgorithmsGraphsAPI Integration & HTTP Clients
65
0
788 people solved
Apr 21, 2026
Robinhood logo
Robinhood
Hard
Data ScientistIntern

Order Fill Rate From Partial-Execution Records, and What Drives It

You receive a CSV export of order activity from a stock-trading app. Its columns are roughly dt, order_id, execution_price, execution_quantity, order_...

Data Manipulation (SQL/Python)Pandas & Python DataData Cleaning & Wrangling
0
0
6 people solved
Oct 28, 2026
OpenAI logo
OpenAI
Hard
Machine Learning Engineer

Compute Matrix Prefix Products And Gradients

You are given $N$ square matrices $A[0], A[1], \dots, A[N-1]$, each of shape $D \times D$. Define the inclusive prefix (cumulative) products: $$Y[i] =...

Machine LearningML CodingNeural Networks & Training
123
2
1280 people solved
Apr 2, 2026
Sierra logo
Sierra
Hard
Software Engineer

Split Markdown Into Header-Aware Chunks

Implement a function that splits a Markdown document into ordered chunks, where each chunk must not exceed a given size limit. A Markdown header is a ...

Coding & AlgorithmsParsing & InterpretersArrays & Strings
45
0
651 people solved
Apr 3, 2026
Infosys logo
InfosysGoogleMeta

Also asked at Meta, Amazon, Turing, Bloomberg, TikTok, Microsoft, Roku, Adobe, Uber, Zupee

Medium
Software Engineer

Cover Listed Travel Days with Minimum Pass Cost

Problem The strictly increasing array days lists travel days within one year. Passes lasting1,7,and30 consecutive days cost costs[0],costs[1],and cost...

Coding & AlgorithmsDynamic Programming
1
0
17 people solved
DoorDash logo
DoorDash
Medium
Software Engineer Locked

Aggregate Downstream Services with Explicit Failure Policies

Aggregate downstream services with explicit required/optional policies, deadline budgets, bounded retries, partial responses, and safe handling of amb...

Software Engineering FundamentalsFault Tolerance & FailoverAPI Integration & HTTP Clients
17
0
134 people solved
Sep 10, 2026
Google logo
GoogleMeta
Medium
Software Engineer

Group Strings Equivalent under Uniform Alphabet Shifts

Problem Group lowercase strings when shifting every letter by the same alphabet offset, with z-to-a wraparound, can transform one into the other. Retu...

Coding & AlgorithmsArrays & StringsMath & Number Theory
1
0
15 people solved
Google logo
Google
Hard
Data Analyst

Investigate a Decrease in Webpage Warnings

Investigate a Decrease in Webpage Warnings A system that warns users about malicious webpages shows a decrease in the number of warnings displayed. Ho...

Analytics & ExperimentationMetric DiagnosticsData Quality & Validation
2
0
37 people solved
Sep 9, 2026
Databricks logo
Databricks
Medium
Software Engineer Locked

Design an n x n Tic-Tac-Toe Game

This question evaluates a candidate's ability to design a class-based data structure that tracks game state and efficiently detects a win condition af...

Coding & Algorithms
16
0
129 people solved
Jun 23, 2026
Glean logo
Glean
Medium
Software Engineer

Find Which Words From a List Can Be Traced Through Adjacent Cells of a Letter Grid

You are given an m x n grid of lowercase letters and a list of words. A word can be traced in the grid if there is a sequence of cells whose letters s...

Coding & AlgorithmsBacktracking & RecursionGrids & Matrices
3
0
52 people solved
Sep 30, 2026
Infosys logo
InfosysJPMorgan ChaseAmazon

Also asked at Amazon, Google, IBM, Meta, Microsoft, Bloomberg, Salesforce

Easy
Software Engineer

Load a Truck with the Most Units

Problem Each row of boxTypes gives a number of available boxes and the units contained in each box of that type. The truck holds at most truckSize box...

Coding & AlgorithmsGreedySorting
1
0
17 people solved
AMD logo
AMD
Medium
Software Engineer Locked

Use the Roofline Model to Analyze Prefill and Decoding

Apply roofline analysis to LLM prefill and decoding using arithmetic intensity, sustainable bandwidth, batching, KV-cache traffic, and measured kernel...

Software Engineering FundamentalsGPU ProgrammingLLM Inference & Serving
4
0
43 people solved
Sep 14, 2026
Capital One logo
Capital One
Medium
Software Engineer Locked

Grid State After a Given Number of Days of Spoilage Spreading to Neighbors

A grid holds empty cells, fresh items and spoiled items, and each day spoilage spreads from every spoiled item to its edge-adjacent fresh neighbors. G...

Coding & AlgorithmsGrids & MatricesGraphs
6
0
67 people solved
Sep 17, 2026
Plaid logo
Plaid
Medium
Software Engineer Locked

Count Completed Jobs in a Serial Multi-Worker Pipeline

Count completed jobs in a serial pipeline where each stage has several parallel workers but the next stage waits for all current work. Practice reason...

Coding & AlgorithmsSimulation & State Machines
42
0
345 people solved
Jul 13, 2026
Google logo
GoogleAmazonMeta

Also asked at Meta, Microsoft, Bloomberg, Cisco, Oracle, Motive, Akamai, TikTok, Infosys, Morgan Stanley, Walmart Labs

Medium
Software Engineer

Find the Longest Balanced Binary Segment

Problem Return the greatest length of a contiguous subarray of nums containing equally many zeros and ones. Return zero if none exists. `cpp class Sol...

Coding & AlgorithmsArrays & Strings
1
0
16 people solved
Anthropic logo
Anthropic
Medium
Software Engineer

Design Model Weight Distribution

Design a system that distributes large machine learning model weight files to a fleet of GPU inference workers. A new model version is published as on...

ML System DesignSystem Design FundamentalsFile & Media Storage
87
0
644 people solved
Apr 19, 2026
Snowflake logo
Snowflake
Medium
Software Engineer Locked

Compute Effective Letter Permissions in a DAG

Compute effective letter permissions for every node in a directed acyclic graph where allowed letters propagate through all ancestors but disallow set...

Coding & Algorithms
17
0
201 people solved
Sep 3, 2026
LinkedIn logo
LinkedIn
Medium
Software Engineer Locked

Block Malicious IPs at an API Gateway Across Data Centers

Design gateway IP-block enforcement with trusted client addresses, versioned rules, fast local checks, expiration, and multi-data-center propagation.

System DesignApplication SecurityCaching
20
0
140 people solved
Sep 17, 2026
Walmart Labs logo
Walmart Labs
Easy
Machine Learning EngineerSenior+

Resolve Technical Conflict and Align Across Teams

Describe a situation in which you resolved a conflict and aligned your team with another team. Cover both the technical disagreement and the nontechni...

Behavioral & LeadershipConflict & CollaborationCommunication & Stakeholders
2
0
33 people solved
Oct 4, 2026
Google logo
GoogleAmazonMeta

Also asked at Meta, Bloomberg, Microsoft, TCS, Arista Networks, Netflix, Accenture, Adobe, Zoho, Airbnb, OnlyFans

Easy
Software Engineer

Detect Equal Values within an Index Radius

Problem Return whether two different array positions hold equal values and are at most k indices apart. Both value equality and the index-distance bou...

Coding & AlgorithmsArrays & StringsTwo Pointers & Sliding Window
0
0
16 people solved
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