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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
Lyft logo
Lyft
Medium
Software EngineerSenior+ Locked

Minimum Window Substring with Repeated Required Characters

Find the shortest substring covering every required character, including duplicates, with case-sensitive matching and a linear-time minimum-window alg...

Coding & AlgorithmsTwo Pointers & Sliding WindowArrays & Strings
7
0
75 people solved
Sep 8, 2026
IBM logo
IBM
Medium
Software Engineer Locked

Break Adjacent Duplicate Characters

Practice counting the minimum replacements required to break adjacent duplicates across many lowercase words.

Coding & Algorithms
8
2
72 people solved
Aug 28, 2026
Atlassian logo
Atlassian
Medium
Software Engineer Locked

Assign tennis bookings to minimum courts

This question evaluates understanding of interval scheduling and temporal resource allocation, testing algorithm design, complexity analysis, and appr...

Coding & AlgorithmsIntervals & SchedulingGreedy
42
1
311 people solved
Jan 22, 2026
Indeed logo
Indeed
Medium
Machine Learning Engineer Locked

Implement MSE Loss and Linear Regression from Scratch

Implement the mean squared error loss and a linear regression model with fit and predict methods, written from scratch rather than with a library mode...

Machine LearningML CodingML Fundamentals
3
0
42 people solved
Sep 3, 2026
Meta logo
Meta
Hard
Software Engineer Locked

Resolve Ambiguous Requirements Before Building

Practice answering an engineering behavioral question about ambiguous or incomplete requirements without inventing product behavior. Use a concrete de...

Behavioral & Leadership
8
0
65 people solved
Aug 3, 2026
OpenAI logo
OpenAI
Hard
Software Engineer Locked

Lead Through Technical Difficulty and Project Conflict

Prepare one coherent example that shows how you led people through a technically difficult project, resolved a project conflict, and delivered an outc...

Behavioral & Leadership
9
0
89 people solved
Aug 4, 2026
Discord logo
Discord
Medium
Software EngineerSenior+ Locked

Design a Local Leader Election System

This question evaluates distributed systems skills—specifically leader election, failure detection, state propagation, and the ability to design and i...

System DesignDistributed CoordinationFault Tolerance & Failover
18
1
323 people solved
May 16, 2026
Tower logo
Tower
Hard
Data Scientist Locked

Explain Why Constant Neural-Network Initialization Fails

During neural-network training, what happens if every weight is initialized to 0? Cover data and labels, leakage-safe features, baselines and model ch...

Machine Learning
5
0
46 people solved
Jul 26, 2026
Anthropic logo
Anthropic
Hard
Software Engineer Locked

Design guardrails and fallback for LLM reliability

This question evaluates a candidate's ability to design safety and reliability layers for LLM-driven production systems, covering guardrails, input/ou...

System DesignLLM ApplicationsFault Tolerance & Failover
84
1
876 people solved
Feb 11, 2026
Google logo
Google
Medium
Software Engineer

Split a Sum into as Many Distinct Positive Evens as Possible

Problem Split finalSum into distinct positive even integers, using as many terms as possible. Return one split with that maximum number of terms. If n...

Coding & AlgorithmsGreedyMath & Number Theory
1
0
12 people solved
Squarepoint logo
Squarepoint
Medium
Quantitative Researcher Locked

Count Files Safely from Bash

Count regular files from Bash without breaking on hidden files, spaces, or newlines. Learn safe find usage, recursion and symlink semantics, and why p...

Software Engineering Fundamentals
6
0
60 people solved
Aug 29, 2026
Google logo
Google
Medium
Software EngineerSenior+

Explain Your Most Meaningful Project Contribution

Explain Your Most Meaningful Project Contribution Tell the interviewer about a project you are most proud of. Explain why it mattered, what you person...

Behavioral & Leadership
3
0
74 people solved
Aug 6, 2026
SIG (Susquehanna) logo
SIG (Susquehanna)
Easy
Data Scientist Locked

Find the Expected Number of Consecutive Chosen Pairs

Find the expected number of adjacent integer pairs in a uniformly chosen six-element subset of 1 through 35. The solution uses 34 indicators, computes...

Statistics & Math
2
0
44 people solved
Aug 16, 2026
Okta logo
Okta
Medium
Software Engineer Locked

Evaluate Role-Based Access with Deny Precedence

Evaluate access for a user and requested property in a user-to-role-to-permission model, applying deny-overrides-allow precedence and defaulting to de...

Coding & Algorithms
4
0
81 people solved
Aug 20, 2026
IBM logo
IBMPayPal
Medium
Software Engineer

Count Pythagorean Distance Nodes in a Tree

Problem You are given an undirected tree with n nodes numbered 0..n-1, its n-1 edges, and three pairwise distinct target nodes x, y, and z. Distance i...

Coding & AlgorithmsTreesMath & Number Theory
1
0
11 people solved
C3 AI logo
C3 AI
Medium
Data ScientistIntern

Find the Most Likely Stopping Sum When Rolling a Die

Find the Most Likely Stopping Sum When Rolling a Die Roll a fair six-sided die repeatedly and add the outcomes. Stop as soon as the running sum is at ...

Statistics & MathProbabilityPuzzles & Brainteasers
1
0
23 people solved
Sep 15, 2026
Google logo
Google
Hard
Software Engineer Locked

Find the Longest Straight Run of One Color

Find the longest straight run of equal-colored cells across horizontal, vertical, and both diagonal directions in a rectangular grid.

Coding & AlgorithmsGrids & MatricesDynamic Programming
35
1
248 people solved
Aug 23, 2026
Roblox logo
Roblox
Medium
Product Manager

Self-Directed Learning Beyond Your Role and the Impact It Had

Tell me about a time you made a real effort to learn something your job did not strictly require, and explain how it helped you. `hint Show the cost a...

Behavioral & LeadershipOwnership & Execution
1
0
16 people solved
Jul 19, 2026
Affirm logo
Affirm
Medium
Software Engineer Locked

Detect fraud events and extract PII

This question evaluates skills in parsing nested event data, extracting and deduplicating PII fields, and performing key-based correlation to detect r...

Coding & AlgorithmsData Cleaning & Wrangling
23
2
237 people solved
Mar 1, 2026
xAI logo
xAI
Medium
Software Engineer

Compute dasher pay from order events

Dasher naive pay (active-time with overlapping orders) You are given a list of events describing when a delivery driver ("Dasher") accepts and fulfill...

Coding & AlgorithmsSimulation & State MachinesSorting
27
0
240 people solved
Mar 1, 2026
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