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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
12.2k
Companies
569
Updated
10.14.2026
12.2k Questions 569 Companies10.14.2026
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
Optiver logo
Optiver
Medium
Software Engineer

Identify OS component causing process starvation

A system with 2 CPU cores runs 5 identical processes continuously. Four processes get equal CPU time, but the fifth appears to get none. Which part of...

Coding & AlgorithmsOperating SystemsDebugging
9
0
149 people solved
Jul 17, 2025
Applied Intuition logo
Applied Intuition
Medium
Software Engineer

Delete duplicate files via DFS

Question LeetCode 609. Find Duplicate File in System – Implement an algorithm (using DFS/backtracking) to delete files with duplicate content in a fil...

Coding & Algorithms
17
0
72 people solved
Aug 4, 2025
Upstart logo
Upstart
Medium
Software Engineer

Find max word letter span

Implement a function that, given an input text string, computes the maximum word letter span and returns both (a) the maximum span and (b) the list of...

Coding & AlgorithmsArrays & Strings
29
0
261 people solved
Sep 6, 2025
Google logo
Google
Medium
Software Engineer Locked

Implement text wrapping, waitlist, and intervals

This question evaluates skills in string parsing and word-wrapping logic, data-structure design for FIFO queue management and deletions, and interval ...

Coding & AlgorithmsData Structure DesignIntervals & Scheduling
29
0
236 people solved
Feb 12, 2026
ByteDance logo
ByteDance
Hard
Software Engineer Locked

Build the Largest Allowed Number Below a Limit

Construct the greatest canonical decimal number below a very large limit using only a reusable set of allowed digits. It calls for string-based numeri...

Coding & Algorithms
2
0
31 people solved
Jul 21, 2026
Tesla logo
Tesla
Medium
Software Engineer

Design a contiguous segment allocator

Design an in-memory contiguous segment allocator over an array of n cells (indexed 0..n- 1), all initially free. Support two operations: 1) allocate(l...

Coding & AlgorithmsData Structure DesignIntervals & Scheduling
16
0
147 people solved
Sep 6, 2025
Anthropic logo
Anthropic
Medium
Machine Learning Engineer

Optimize MapReduce performance

Optimize MapReduce for Parallel Efficiency and Network Utilization You are designing a large-scale batch processing job (e.g., feature extraction, log...

System DesignBatch & Stream Processing
35
0
605 people solved
Aug 4, 2025
Voleon logo
Voleon
Medium
Data Scientist

Analyze time-zoned events with pandas

You are given two pandas DataFrames. events columns: user_id:int, ts:str ISO-8601 with timezone (e.g., '2025-08-31T23:58:43-07:00'), event:str in {'si...

Data Manipulation (SQL/Python)Pandas & Python DataData Cleaning & Wrangling
21
0
340 people solved
Oct 13, 2025
Nuro logo
Nuro
Medium
Software Engineer

Find gaps between intervals

You are given a list of integer intervals intervals, where each interval is represented as [start, end] (inclusive), and start <= end. Two intervals m...

Coding & AlgorithmsIntervals & Scheduling
16
0
264 people solved
Nov 9, 2025
Microsoft logo
Microsoft
Easy
Software Engineer

Solve binary-tree reverse printing and LPS

You are given a binary tree node definition: - TreeNode { int val; TreeNode left; TreeNode right; } Answer the following two algorithmic questions. 1)...

Coding & AlgorithmsTreesDynamic Programming
16
0
179 people solved
Dec 24, 2025
Point72 logo
Point72
Medium
Machine Learning Engineer

Find the Smallest String After One Decrement

You are given a string s consisting only of lowercase English letters. You must perform exactly one operation: 1. Choose one non-empty contiguous subs...

Coding & Algorithms
5
0
55 people solved
Jan 21, 2026
Affirm logo
Affirm
Easy
Data Scientist

Calculate Profit of 4-Month Loan at 30% APR

Calculate Profit of 4-Month Loan at 30% APR Credit Risk — Short-term Personal Loan Profitability Context You are evaluating the profit on a simple-int...

Analytics & ExperimentationMath & Number Theory
10
0
107 people solved
Aug 4, 2025
Anthropic logo
Anthropic
Hard
Software Engineer

Compute Exclusive Time from Stack Events

Compute Exclusive Time from Stack Events Given entry and exit events from one thread, compute the total exclusive running time of each function. The i...

Coding & Algorithms
3
0
59 people solved
Apr 16, 2026
Roblox logo
Roblox
Easy
Data ScientistSenior+

Find maximum follow depth using recursion

You are given a directed follows relationship representing a social graph: - Each record (follower_id, followee_id) means follower_id follows followee...

Coding & AlgorithmsGraphs
16
0
244 people solved
Dec 11, 2025
OpenAI logo
OpenAI
Medium
Data Scientist

Analyze A/B Test Results for Subscription Conversion Rates

Analyze A/B Test Results for Subscription Conversion Rates An A/B test offers free users a limited-time trial of the paid plan to see whether it incre...

Analytics & ExperimentationExperiment Analysis & ReadoutHypothesis Testing
128
1
362 people solved
Jul 12, 2025
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
40
0
522 people solved
Dec 8, 2025
Workday logo
Workday
Easy
Software EngineerSenior+ Locked

Explain What You Value in Your Next Engineering Role

Give a prioritized, experience-based account of what you value in an engineering role, the trade-offs you accept, and the evidence you use to assess t...

Behavioral & Leadership
2
0
21 people solved
Aug 23, 2026
Waymo logo
Waymo
Easy
Data Scientist Locked

Model wins-until-failure and expected future wins

This question evaluates probabilistic modeling and statistical inference skills for censored time-to-event performance data, focusing on estimating pl...

Statistics & MathProbabilitySampling & Estimation
22
0
247 people solved
Jan 17, 2026
ByteDance logo
ByteDance
Medium
Software Engineer Locked

Shortest Path in a Grid with Limited Obstacle Removal

This question evaluates a candidate's ability to extend classic breadth-first search into a state-augmented shortest-path problem, where the state inc...

Coding & Algorithms
1
0
18 people solved
Jun 17, 2026
Coinbase logo
Coinbase
Medium
Software Engineer

Solve restaurant path and order event tasks

You are given two independent coding tasks. Task 1: Shortest paths in a restaurant grid Context: A restaurant is represented as a 2D grid. The waiter ...

Coding & AlgorithmsDynamic ProgrammingDistributed Transactions & Idempotency
29
0
234 people solved
Dec 8, 2025
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