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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
11.9k
Companies
569
Updated
10.02.2026
11.9k Questions 569 Companies10.02.2026
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
Capital One logo
Capital One
Medium
Data Scientist

Quantify and optimize team-match funnel

Team-Matching Funnel: Metrics, Targets, and a 14-Day Experiment Plan Context You are designing analytics for a recruiting "team-matching" funnel that ...

Analytics & Experimentation
3
0
45 people solved
Oct 13, 2025
Morgan Stanley logo
Morgan Stanley
Medium
Data Scientist

How do you escape the circle?

A dog runs continuously along the boundary of a circle of radius 1 at speed 4. You start at an arbitrary point strictly inside the circle and can run ...

Coding & Algorithms
4
0
65 people solved
Dec 8, 2025
Amazon logo
Amazon
Medium
Applied Scientist

Implement SGD for linear regression and derive gradients

Prompt You are given a dataset of \(n\) 1D samples \(\{(x_i, y_i)\}_{i=1}^n\), where \(x_i\) and \(y_i\) are real numbers. We want to fit a linear mod...

Machine LearningML CodingRegression & Statistical Modeling
11
0
119 people solved
Dec 15, 2025
Adobe logo
Adobe
Medium
Software Engineer

Persist with an Initiative Others Doubt

Question Tell me about an initiative you continued to advocate for even though others initially doubted it. How did you test your belief, earn support...

Behavioral & Leadership
0
0
13 people solved
Apr 19, 2026
Amazon logo
Amazon
Medium
Data Scientist

Design Incremental Load Process for Large Relational Table

orders_daily_load +------------+-----------+-------------+--------+ | load_date | order_id | customer_id | amount | +------------+-----------+------...

Data Manipulation (SQL/Python)
87
0
229 people solved
Jul 12, 2025
SoFi logo
SoFi
Medium
Software Engineer Locked

Find Kth Unique Maximum

This question evaluates algorithmic problem-solving skills related to sorted arrays, deduplication, and order-statistics across combined datasets, mea...

Coding & Algorithms
2
0
52 people solved
Oct 1, 2025
Lyft logo
Lyft
Easy
Software Engineer

Validate a Binary Search Tree Iteratively

Problem Determine whether a binary tree is a valid binary search tree. Every value in a node's entire left subtree must be smaller than the node value...

Coding & Algorithms
2
1
44 people solved
Apr 14, 2026
Coinbase logo
Coinbase
Easy
Data ScientistSenior+

Answer ownership and ambiguity behavioral questions

Answer behavioral interview prompts for a Data Scientist working in risk or product analytics: 1. Tell me about a time data changed a decision. 2. Whe...

Behavioral & Leadership
4
0
57 people solved
Feb 6, 2025
Capital One logo
Capital One
Easy
Data Scientist

Visualize Price Impact on Demand and Profit Trends

Price Sensitivity and Profit Curves You are modeling a single network service with a per-unit price p offered to a large market. Customer demand decre...

Analytics & Experimentation
12
0
71 people solved
Jul 12, 2025
Wave logo
Wave
Hard
Software Engineer Locked

Construct a circular gift exchange across families

This question evaluates ability to model constrained permutations and apply graph-theoretic and combinatorial reasoning to produce a single circular o...

Coding & Algorithms
4
0
37 people solved
Jan 6, 2026
PayPal logo
PayPal
Medium
Software Engineer

Explain HashMap internals and collisions

Explain HashMap internals and collisions In Java, describe the underlying data structures used by HashMap (e.g., array of buckets, linked lists vs tre...

Coding & AlgorithmsProgramming Languages
7
0
79 people solved
Aug 7, 2025
Capital One logo
Capital One
Medium
Data Scientist

Calculate Payback Period for Solar and Corn Projects

Calculate Payback Period for Solar and Corn Projects Energy One must choose between two renewable projects using a simple payback metric: years until ...

Analytics & Experimentation
90
0
329 people solved
Jul 12, 2025
Amazon logo
Amazon
Hard
Software Engineer

Design a configuration subscription service

System Design: Configuration Service with Subscriptions Context Design a multi-tenant configuration service that stores key–value configuration and le...

System DesignSystem Design FundamentalsKey-Value Stores
11
0
83 people solved
Sep 6, 2025
Meta logo
Meta
Hard
Software EngineerNew Grad

Determine Whether a String Can Be Segmented into Dictionary Words

Problem Given a string and a set of words, return whether the entire string can be formed by concatenating dictionary words. A dictionary word may be ...

Coding & Algorithms
2
0
23 people solved
Dec 21, 2025
ByteDance logo
ByteDance
Medium
Data Scientist

Probability That One Fair Die Beats Another

Probability That One Fair Die Beats Another Two fair dice, A and B, are represented by integer arrays. Each array element is one physical face, so dup...

Coding & Algorithms
1
0
14 people solved
Apr 4, 2026
Meta logo
Meta
Medium
Software Engineer

Compute top-N outgoing spenders

Add a feature to report the top N accounts by total outgoing payments across both immediate pays and scheduled payments. Implement: List<String> topNS...

Coding & Algorithms
4
0
31 people solved
Sep 6, 2025
Instacart logo
Instacart
Medium
Software Engineer

Discuss conflict, failure, and leadership examples

Discuss conflict, failure, and leadership examples Behavioral & Leadership (Software Engineer Onsite) Prepare four STAR stories that demonstrate your ...

Behavioral & LeadershipLeadership & InfluenceAmbiguity & Decision Making
6
0
87 people solved
Jul 15, 2025
Meta logo
Meta
Medium
Machine Learning Engineer Locked

Solve array merge, tree view, and maze tasks

This question evaluates array manipulation and in-place algorithms, binary tree traversal and visibility reasoning, and grid graph traversal for path ...

Coding & Algorithms
3
0
42 people solved
Dec 9, 2025
NVIDIA logo
NVIDIA
Medium
Software Engineer

Solve unique triplets summing to target

Solve unique triplets summing to target Implement a function that, given an integer array nums and an integer target T, returns all unique triplets [x...

Coding & AlgorithmsTwo Pointers & Sliding WindowSorting
6
0
101 people solved
Jul 15, 2025
Meta logo
Meta
Medium
Software Engineer Locked

Maximize Letters from Disjoint Words

This question evaluates understanding of combinatorial selection, set-based constraints, and efficient representation and enumeration of candidate sub...

Coding & Algorithms
3
0
32 people solved
Dec 30, 2025
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