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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
Salesforce logo
SalesforceOracleMicrosoft
Hard
Software Engineer

Distance from Every Vertex to the Only Cycle

Problem A connected, simple undirected graph has vertices numbered from 0 through n - 1 and contains exactly one cycle. Return an array of length n wh...

Coding & AlgorithmsGraphs
0
0
7 people solved
OpenAI logo
OpenAI
Medium
Software Engineer

Implement a memory allocator with malloc/free

Problem You are implementing a simplified memory allocator over a contiguous memory region. Initialize the allocator with a fixed total size: - alloca...

Coding & AlgorithmsData Structure DesignMemory Management
35
0
385 people solved
Jan 9, 2026
Harvey logo
Harvey
Hard
Software Engineer Locked

Implement Spreadsheet Cell Updates

This question evaluates skills in data structures, expression parsing, dependency graph management, incremental evaluation, and cycle detection for ma...

Coding & AlgorithmsGraphsData Structure Design
21
0
142 people solved
May 9, 2026
Meta logo
Meta
Hard
Software EngineerSenior+

Solve Subarray Sum and Local Minimum

Two coding problems were reported in the same phone-screen round: 1. Count target-sum subarrays. Given an integer array nums and an integer k, return ...

Coding & Algorithms
11
1
78 people solved
Apr 15, 2026
Whatnot logo
Whatnot
Hard
Software Engineer Locked

Remove All Adjacent Duplicate Pairs

Repeatedly remove equal adjacent character pairs until a Unicode string becomes stable. Use a stack-like single pass to expose newly adjacent duplicat...

Coding & Algorithms
13
0
123 people solved
Jul 14, 2026
J.P. Morgan logo
J.P. Morgan
Medium
Software Engineer II Locked

Return the K Largest Integers

Return the k largest integers in deterministic descending order while preserving duplicates and avoiding a full-array sort when k is much smaller than...

Coding & Algorithms
3
0
48 people solved
Aug 8, 2026
Capital One logo
Capital One
Medium
Product Manager

Growth Strategy for Capital One's Free Coupon and Price-Comparison Shopping Tool

Capital One Shopping is Capital One's free tool that looks for coupon codes, lower prices and rewards while people shop online. As its product manager...

Product Design & StrategyGrowth & MonetizationProduct Strategy
2
0
23 people solved
Mar 27, 2026
Transunion logo
Transunion
Easy
Data ScientistIntern

How would you answer a DS video interview?

Question You are interviewing for a Data Scientist Intern role at TransUnion. The technical screen is an asynchronous (one-way) video interview: you a...

Behavioral & LeadershipCommunication & Stakeholders
30
0
265 people solved
Feb 3, 2026
Amazon logo
AmazonMicrosoftTikTok

Also asked at TikTok, Google, Meta, Zepto, Bloomberg, Salesforce, Okta, Oracle, Deshaw

Medium
Software Engineer

Collect Binary-Tree Nodes at an Exact Distance from a Target

Problem Given a binary-tree root, a pointer target to a node in that tree, and k, return the values of every node exactly k edges from the target. Edg...

Coding & AlgorithmsTreesGraphs
1
0
10 people solved
Spotify logo
Spotify
Medium
Backend Engineer

Visit-Pattern Counter: Multi-Input Runtime Analysis and Production Hardening

In a backend coding round, once you have a working function for the problem below, the interviewer spends the remaining time on follow-ups about what ...

Software Engineering FundamentalsCode Quality & MaintainabilityArrays & Strings
1
0
19 people solved
Jul 7, 2026
Nextdoor logo
Nextdoor
Medium
Software Engineer

Merge Weekly Time Intervals

You are given a list of time intervals within a single week. Each time is written as a day-of-week plus a 24-hour clock, for example Sat 13:00 or Mon ...

Coding & AlgorithmsIntervals & Scheduling
23
0
172 people solved
Mar 16, 2026
Google logo
GoogleSamsung
Medium
Software Engineer

Check a Path Through Mutually Connected Street Tiles

Problem Each grid tile has two street openings:1 left/right,2 up/down,3 left/down,4 right/down,5 left/up,and 6 right/up. Determine whether a continuou...

Coding & AlgorithmsGrids & MatricesGraphs
0
0
9 people solved
Squarepoint logo
Squarepoint
Medium
Software Engineer

Parse payroll file and answer queries

You are given a payroll "file" as a StringIO (file-like) object in Python. The underlying text represents manually-entered payroll data. Assume the fo...

Coding & AlgorithmsData Cleaning & WranglingParsing & Interpreters
13
0
239 people solved
Dec 8, 2025
Databricks logo
Databricks
Hard
Software EngineerNew Grad Locked

Optimize a SQL query plan tree

This question evaluates understanding of relational algebra, query optimization techniques, and tree-based plan transformations such as predicate push...

Coding & AlgorithmsDatabase InternalsIndexing & Query Performance
18
0
157 people solved
Jan 22, 2026
Bloomberg logo
BloombergGoogleAmazon

Also asked at Amazon, Meta, Microsoft, Yandex

Easy
Software Engineer

Distinct Values Exclusive to Each of Two Arrays

Problem Return two lists for the integer arrays nums1 and nums2. The first must contain every distinct value that occurs in nums1 but not in nums2; th...

Coding & AlgorithmsArrays & Strings
0
0
10 people solved
The New York Times logo
The New York Times
Easy
Data Analyst

Write SQL for content-view analytics

Context You work with page-view event logs and need to compute several engagement/usage summaries. Assume a single table: page_views | column | type |...

Data Manipulation (SQL/Python)SQLMetrics & KPIs
5
0
83 people solved
Jan 17, 2026
OpenAI logo
OpenAI
Hard
Software Engineer

Explain Your Engineering Ownership

You are on an initial technical screening call for a Software Engineer role. Despite being an early-stage "recruiter" screen, it is unusually technica...

Behavioral & LeadershipProject Deep DiveReact & UI Frameworks
17
0
226 people solved
Apr 4, 2026
Airbnb logo
Airbnb
Medium
Software Engineer

Compute split-stay listing pairs

Given a set of Airbnb listings, each with availability represented as a sorted list of day integers, and a requested inclusive date range [S, E], comp...

Coding & AlgorithmsIntervals & SchedulingBinary Search
81
0
790 people solved
Sep 6, 2025
New Relic logo
New Relic
Medium
Backend Engineer

Design a Kafka Consumer Service That Groups Trace Events by Trace ID

Design a distributed event-processing system that consumes trace events from Kafka and groups together all events that belong to the same trace, so th...

System DesignMessaging & Event-DrivenBatch & Stream Processing
1
0
23 people solved
Sep 23, 2026
Amazon logo
Amazon
Medium
Software EngineerSenior+ Locked

Raise the Quality Bar on a Project

Tell a project story in which you raised a meaningful quality standard without losing control of delivery. Tie a specific reliability, security, usabi...

Behavioral & Leadership
4
0
65 people solved
Aug 22, 2026
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