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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
1.5k
Companies
980
Updated
11.12.2026
1.5k 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
Meta logo
Meta
Medium
Software EngineerSenior+ Locked

Solve maze tasks and compute shortest routes

This multi-part question evaluates proficiency in grid-based pathfinding and shortest-path reasoning, debugging and incremental code extension, handli...

Coding & AlgorithmsGrids & MatricesGraphs
7
0
93 people solved
Feb 11, 2026
Google logo
Google
Medium
Product Manager

Add one to a non-negative integer stored as an array of decimal digits

You are given an array in which every element is a single decimal digit between 0 and 9, and the elements together represent one non-negative whole nu...

Software Engineering FundamentalsArrays & StringsMath & Number Theory
1
0
13 people solved
May 13, 2025
Microsoft logo
Microsoft
Medium
Data Scientist

Rotate a Square Matrix 90 Degrees Clockwise

Given an n × n matrix of integers, rotate it 90 degrees clockwise. After the rotation, the first row of the result is the original first column read f...

Coding & AlgorithmsGrids & Matrices
0
0
1 people solved
Aug 28, 2026
LinkedIn logo
LinkedIn
Medium
Software Engineer Locked

Find dictionary words matching a phone digit string

This question evaluates familiarity with phone-keypad character-to-digit mappings, string pattern matching, and efficient filtering of dictionary word...

Coding & AlgorithmsArrays & Strings
17
1
149 people solved
Jan 12, 2026
Citadel logo
Citadel
Medium
Data Scientist

Implement lazy unique-merge generator for sorted streams

Write a Python generator merge_unique(a, b) that lazily merges two nondecreasing iterables a and b (potentially infinite) into a single nondecreasing ...

Coding & AlgorithmsArrays & StringsTesting & Quality
14
0
133 people solved
Oct 13, 2025
Instacart logo
Instacart
Medium
Software Engineer Locked

Implement multiple coding round problems

This multi-part question evaluates algorithmic problem-solving skills including efficient lookup/search, stable ordering and priority management, stre...

Coding & AlgorithmsParsing & InterpretersBinary Search
22
0
223 people solved
Jan 1, 2026
Google logo
Google
Medium
Data Scientist Locked

Implement sampling and subarray algorithms

Solve uniform 2D square sampling and longest increasing contiguous subarray. The solution maps Uniform(0,1) to Uniform(-1,1), proves uniformity by ind...

Coding & AlgorithmsProbabilityArrays & Strings
13
0
130 people solved
Mar 9, 2025
Airbnb logo
Airbnb
Medium
Software Engineer Locked

Simulate pouring water onto terrain

This question evaluates a candidate's ability to implement a discrete simulation and perform array manipulation while correctly handling deterministic...

Coding & AlgorithmsSimulation & State Machines
37
4
267 people solved
Feb 11, 2026
Meta logo
Meta
Medium
Machine Learning Engineer Locked

Find longest palindromic substring

This question evaluates knowledge of string algorithms and pattern recognition, focusing on identifying palindromic substrings and reasoning about tim...

Coding & AlgorithmsArrays & Strings
8
0
82 people solved
Nov 28, 2025
Netflix logo
Netflix
Medium
Machine Learning Engineer

Transform flat keys into nested dictionary

You are given a flat collection of parameter keys like ['layer1.attention.q_proj.weight', 'layer1.attention.k_proj.weight', 'layer1.mlp.fc1.weight', ....

Data Manipulation (SQL/Python)Arrays & StringsData Cleaning & Wrangling
10
0
177 people solved
Aug 13, 2025
Stripe logo
Stripe
Medium
Software Engineer

Build searchable list and highlight max transaction

UI Component: Filtered List With Max-Highlight Context Implement a small web UI component (e.g., in a modern frontend framework) that receives an arra...

Software Engineering FundamentalsUI Components & AccessibilityReact & UI Frameworks
17
0
161 people solved
Sep 6, 2025
Optiver logo
Optiver
Medium
Software Engineer

Simulate return-weighted rebalancing strategy

Simulate return-weighted rebalancing strategy Problem: Momentum-weighted daily log-return statistics You have N assets with end-of-day prices over T t...

Analytics & ExperimentationSimulation & State Machines
10
1
172 people solved
Jul 16, 2025
Apple logo
Apple
Hard
Data Scientist

Count Occurrences of Each Value in an Integer List, Sorted by Value

Given a list of integers that may contain repeated values, count how many times each distinct value appears. The report describes the task only as cou...

Coding & AlgorithmsArrays & Strings
0
0
3 people solved
May 2, 2026
Citadel logo
Citadel
Medium
Software Engineer Locked

Compute maximum later-earlier difference

This question evaluates array-processing and algorithmic optimization skills, testing reasoning about element relationships in sequences; it falls und...

Coding & AlgorithmsArrays & Strings
9
0
134 people solved
Feb 11, 2026
Uber logo
Uber
Medium
Software Engineer Locked

Return sorted squares of a sorted array

This question evaluates array-processing and algorithmic optimization skills, including handling negative values, element-wise transformations, and pr...

Coding & AlgorithmsTwo Pointers & Sliding WindowArrays & Strings
8
0
90 people solved
Jan 10, 2026
Coinbase logo
Coinbase
Medium
Software Engineer

Recommend movies by shared ratings

Recommend movies by shared ratings Write a function recommendations(user, ratings) that returns a list of movies to recommend to the given user based ...

Coding & AlgorithmsGraphsArrays & Strings
10
0
106 people solved
Aug 7, 2025
Amazon logo
Amazon
Medium
Applied Scientist Locked

Compute array products excluding self and top-k

This question evaluates skills in array manipulation, in-place algorithm design, numerical stability and edge-case reasoning (such as handling multipl...

Coding & AlgorithmsArrays & StringsSorting
12
0
91 people solved
Jan 6, 2026
Goldman Sachs logo
Goldman Sachs
Medium
Software Engineer

Solve string and hashmap interview tasks

Coding questions (solve both) 1) First non-repeating character Given a string s, return the first character that appears exactly once in the string. -...

Coding & AlgorithmsArrays & Strings
25
0
176 people solved
Dec 9, 2025
TikTok logo
TikTok
Medium
Software Engineer

Solve message splitting and board crushing

Question LeetCode 2468. Split Message Based on Limit – Given a message string and a per-line width, split it into parts adding the suffix "<i/n>" (e.g...

Coding & AlgorithmsGrids & MatricesArrays & Strings
11
0
123 people solved
Aug 4, 2025
Bloomberg logo
Bloomberg
Medium
Software Engineer Locked

Count islands by requested sizes

This question evaluates a candidate's understanding of grid connectivity, identification of connected components, and the ability to aggregate compone...

Coding & AlgorithmsGrids & MatricesGraphs
25
0
179 people solved
Jan 22, 2026
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