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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
12.1k
Companies
579
Updated
10.10.2026
12.1k Questions 579 Companies10.10.2026
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
Oracle logo
Oracle
Medium
Software Engineer Locked

Move Forward When Requirements Are Ambiguous

Explain how you advanced an engineering task with ambiguous requirements by identifying the unresolved decision, finding its owner, continuing reversi...

Behavioral & Leadership
0
0
16 people solved
Aug 7, 2026
Uber logo
Uber
Medium
Software Engineer AI Locked

Design a Parking Lot

This question evaluates object-oriented modeling, API design, resource allocation, and concurrency control by asking for classes, relationships, key m...

Software Engineering FundamentalsLow-Level Design (OOP)Concurrency
82
0
800 people solved
Apr 21, 2026
Meta logo
Meta
Medium
Software Engineer

Measure Forty-Five Minutes with Two Unevenly Burning Ropes

Interview Prompt You have two ropes. Each rope takes exactly 60 minutes to burn completely from one end, but neither burns at a uniform rate and the r...

Statistics & Math
2
0
34 people solved
Apr 3, 2026
BlackRock logo
BlackRock
Easy
Software Engineer Locked

Design a parking lot system

This question evaluates system design competencies such as scalable distributed architecture, real-time state management, data modeling, API design, c...

System DesignSystem Design FundamentalsAPI Design
7
0
123 people solved
Jan 22, 2026
Chicago Trading Company logo
Chicago Trading Company
Medium
Software EngineerNew Grad Locked

Implement a Unique Pointer and Vector

This question evaluates understanding of C++ resource management, RAII, ownership and object lifetime semantics, move versus copy semantics, exception...

Software Engineering Fundamentals
11
0
84 people solved
Jun 10, 2026
ByteDance logo
ByteDance
Medium
Software Engineer Locked

Evaluate an Integer Arithmetic Expression with Parentheses

Evaluate a long integer expression with parentheses, whitespace, binary arithmetic, and unary signs without calling a language evaluator. Respect prec...

Coding & Algorithms
1
0
20 people solved
Jun 23, 2026
Amazon logo
Amazon
Medium
Software EngineerNew Grad

Find the K Most Frequent Values

Given a nonempty integer array and an integer k, return any valid collection of the k distinct values with the highest occurrence frequencies. A selec...

Coding & AlgorithmsHeaps & Priority QueuesArrays & Strings
1
0
18 people solved
Mar 18, 2026
Gusto logo
Gusto
Medium
Software Engineer Locked

Demonstrate Customer-Centric Judgment About AI

Prepare a real customer-facing AI decision that shows how evidence, alternatives, and material risks shaped the outcome. Distinguish customer groups, ...

Behavioral & Leadership
2
0
23 people solved
Aug 1, 2026
Coinbase logo
Coinbase
Medium
Software Engineer

Implement custom iterator classes

Implement custom iterator classes In a blank coding environment (no IDE assistance, no autocomplete), implement an iterator abstraction entirely from ...

Coding & AlgorithmsData Structure DesignTesting & Quality
35
0
269 people solved
Aug 4, 2025
Meta logo
Meta
Easy
Software Engineer

Solve Tree View and Triplet Sum

You are asked to solve two coding problems. Problem 1: Return the nodes visible from the right Given the root of a binary tree, return the values of t...

Coding & Algorithms
7
0
74 people solved
Apr 24, 2026
Capital One logo
Capital One
Medium
Data Scientist

Fix dash dates and aggregate watch time

You receive a CSV of ad viewing logs where the date column repeats only on the first row of each block and subsequent rows use a single dash '-' to in...

Data Manipulation (SQL/Python)
6
0
72 people solved
Oct 13, 2025
Applied Intuition logo
Applied Intuition
Easy
Software Engineer

Design a KV store with transactions

System Design Prompt Design an in-memory/disk-backed key-value store that supports transactions. Functional requirements - Basic operations: Get(key),...

System DesignKey-Value StoresTransactions & Isolation
16
0
127 people solved
Feb 12, 2026
Truefoundry logo
Truefoundry
Medium
Software Engineer Locked

Query a Versioned Array

A fixed-length array starts with all values equal to zero. Work through the function contract, boundary cases, correctness argument, and time and spac...

Coding & Algorithms
6
0
51 people solved
Aug 1, 2026
Pinterest logo
Pinterest
Easy
Machine Learning Engineer

Implement string-based rounding without floats

Coding You are not allowed to parse the input into a built-in floating type (to avoid overflow and precision issues). Work directly on strings. 1) Imp...

Coding & AlgorithmsArrays & StringsMath & Number Theory
20
0
186 people solved
Dec 15, 2025
Waymo logo
Waymo
Medium
Machine Learning Engineer

Debug Tensor Conversion Bugs

You are given a small tensor utility library used in distributed numerical code. The implementation has several bugs related to aliasing, array conver...

Coding & Algorithms
9
0
86 people solved
Nov 27, 2025
Microsoft logo
Microsoft
Medium
Software Engineer

Assemble DNA payload strings from tagged fragments

You are given a list of DNA-like fragments. Each fragment is a tuple: - start_tag: string - end_tag: string - payload: string A valid DNA chain is for...

Coding & AlgorithmsGraphs
18
0
292 people solved
Dec 15, 2025
Waymo logo
Waymo
Hard
Software Engineer

Find a Repeating Vehicle Program Under Fuel and Memory Limits

Find a short program for a vehicle on a grid. The vehicle starts at a specified interior cell with 100 fuel units. It can move up, down, left, or righ...

Coding & AlgorithmsSimulation & State MachinesBacktracking & Recursion
3
0
30 people solved
Jun 27, 2026
IBM logo
IBM
Easy
Data ScientistIntern

Estimate free-trial conversion probability

Context A product offers a free trial. You are asked: “What is the probability of conversion for a group of people who started a free trial?” Data (as...

Analytics & Experimentation
7
0
65 people solved
Jan 17, 2026
Google logo
Google
Medium
Software Engineer

Answer leadership and ambiguity scenarios

Question Answer the following behavioral & leadership questions with concrete examples. Use a structured format such as STAR (Situation, Task, Actions...

Behavioral & LeadershipLeadership & InfluenceConflict & Collaboration
31
0
247 people solved
Jan 1, 2026
Google logo
Google
Hard
Data Scientist

Experimentally evaluate jogging-route recommendations

Design an Evaluation for Jogging Route Recommendations in Maps Objective Design an A/B test and evaluation framework for recommending optimal jogging ...

Analytics & ExperimentationExperiment Design (A/B Testing)Hypothesis Testing
15
0
165 people solved
Oct 13, 2025
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