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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
Medium
Software Engineer

Check Whether One String Contains Another by Direct Comparison

Given a text string and a pattern string, determine whether the pattern occurs as a contiguous substring of the text. Use a direct brute-force compari...

Coding & AlgorithmsArrays & Strings
1
0
17 people solved
Jan 14, 2026
Amazon logo
Amazon
Easy
Data ScientistIntern

Evaluate NLP Classification Models

You are interviewing for a Data Scientist internship at Amazon. The interviewer asks you to walk through how you think about an NLP classification pro...

Machine LearningModel Evaluation
34
0
409 people solved
Apr 3, 2026
TCS logo
TCSMetaGoogleWipro

Also asked at Google, Wipro

Easy
Software Engineer

Check Constant Values along Down-Right Diagonals

Problem Return whether every diagonal running from upper left to lower right in matrix contains one repeated value. Single-cell diagonals satisfy the ...

Coding & AlgorithmsGrids & Matrices
1
0
13 people solved
Snapchat logo
Snapchat
Hard
Machine Learning Engineer Locked

Explain Core ML Training, Evaluation, and Transformer Concepts

Review overfitting, class imbalance, optimizer behavior, classification metrics, and Transformer architecture in one focused ML fundamentals discussio...

Machine Learning
6
0
61 people solved
Aug 28, 2026
Snowflake logo
Snowflake
Easy
Software Engineer

Answer conflict, tight deadline, and mentorship prompts

Behavioral Interview Prompts Answer the following with specific examples from your experience: 1. Conflict: Tell me about a time you had a conflict wi...

Behavioral & LeadershipConflict & CollaborationMentoring & Team Growth
18
0
265 people solved
Mar 1, 2026
Anthropic logo
Anthropic
Medium
Software Engineer Locked

Optimize HTTP requests for speed and limits

This question evaluates understanding of concurrency, throughput optimization, rate limiting, and trade-offs in designing scalable networked services....

System DesignRate LimitingConcurrency
42
0
557 people solved
Dec 8, 2025
Uber logo
Uber
Medium
Software EngineerIntern Locked

Minimum Delivery Cost Between Cities

This coding interview question evaluates cost optimization and routing over a city network with value-based moves and conditional directed discounts. ...

Coding & AlgorithmsGraphs
19
1
156 people solved
Jul 3, 2026
Snowflake logo
SnowflakeMetaGoogleAmazon

Also asked at Google, Amazon

Medium
Software Engineer

Count Tree Nodes Matching Their Rounded-Down Subtree Average

Problem For each node in the binary tree rooted at root, take the average of all values in its subtree, including the node itself, and round down. Ret...

Coding & AlgorithmsTreesDynamic Programming
0
0
13 people solved
Databricks logo
Databricks
Medium
Software Engineer

Design a generic key-value store

Design a Generic, Type-Safe Key-Value Store API Context You're asked to design a reusable key-value store with a generic, user-friendly API. The store...

System DesignKey-Value StoresConcurrency
51
0
543 people solved
Sep 6, 2025
Atlassian logo
Atlassian
Easy
Software Engineer Locked

Design a Data Stream Processor

This question evaluates the ability to design real-time data stream processing systems, testing competencies such as high-throughput ingestion, event ...

System Design
9
1
134 people solved
Feb 9, 2026
Google logo
GoogleWaymoMeta

Also asked at Meta, LinkedIn, TikTok, Microsoft, Amazon

Medium
Machine Learning Engineer

Solve meeting scheduling and robot cleaning tasks

You are given two independent coding problems. --- Problem 1: Prioritized Meeting Scheduling You are asked to schedule meetings in a single meeting ro...

Coding & AlgorithmsDynamic ProgrammingBacktracking & Recursion
20
1
236 people solved
Anthropic logo
Anthropic
Medium
Software Engineer Locked

Design a distributed web crawler

This question evaluates the ability to design scalable, fault-tolerant distributed systems for web crawling, covering competencies such as URL dedupli...

System DesignSystem Design Fundamentals
96
0
670 people solved
Jan 6, 2026
Meta logo
MetaGoogleMicrosoft
Easy
Software Engineer

Find the Second-Greatest Distinct Digit

Problem The string s contains lowercase letters and decimal digits. Return the second-greatest distinct digit value occurring in it, or -1 when fewer ...

Coding & AlgorithmsArrays & Strings
1
0
12 people solved
Optiver logo
Optiver
Medium
Software Engineer

Design a queue and analyze tradeoffs

Design a FIFO queue data structure that supports enqueue, dequeue, peek, and isEmpty. Compare implementations using a singly linked list, a dynamic ar...

Coding & AlgorithmsData Structure Design
63
0
523 people solved
Sep 6, 2025
Meta logo
Meta
Easy
Data Scientist

How to evaluate a similar-listing notifications feature

Question You are a Data Scientist on a US C2C marketplace app (like Facebook Marketplace) where users buy and sell second-hand products. Current produ...

Analytics & ExperimentationLaunch EvaluationMetrics & KPIs
132
1
1130 people solved
Jan 17, 2026
Netflix logo
Netflix
Hard
Software Engineer

Compute subtree sums with tree DFS

You are given an undirected tree with n nodes labeled 1..n and n-1 edges. The tree is rooted at node 1. Each node i has an integer value val[i]. Retur...

Coding & AlgorithmsTrees
30
0
312 people solved
Mar 9, 2026
Snowflake logo
Snowflake
Medium
Frontend Engineer Locked

Design Calendar Frontend State for Recurring Events

Design frontend state and APIs for a calendar with bounded views, recurring series, and single-occurrence rescheduling. Separate normalized server dat...

System Design
8
0
102 people solved
Aug 3, 2026
Pinterest logo
Pinterest
Hard
Machine Learning Engineer Locked

Prevent Vanishing Gradients in Deep Networks

Explain why gradients vanish in deep networks and how activation choice, initialization, residual connections, and normalization affect training. Dist...

Machine LearningNeural Networks & TrainingML Fundamentals
23
0
180 people solved
Jul 3, 2026
Airbnb logo
Airbnb
Medium
Software Engineer

Explain why you want to join Airbnb

"Why Airbnb?" — Culture / Values Round (Software Engineer) You are in the culture round of an Airbnb Software Engineer loop. The interviewer asks you ...

Behavioral & LeadershipMotivation & Fit
44
0
466 people solved
Sep 6, 2025
Amazon logo
Amazon
Medium
Software EngineerNew Grad

Design a pizza ordering system

Design the core object-oriented model for a pizza ordering system used by a small restaurant. The system should allow customers to: - browse a menu of...

Software Engineering FundamentalsLow-Level Design (OOP)
20
1
324 people solved
Oct 24, 2025
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