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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
154
Companies
980
Updated
11.05.2026
154 Questions 980 Companies11.05.2026
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
Apple logo
AppleMetaBloomberg
Medium
Software Engineer

Sum the Bit Differences across All Array Pairs

Sum the Bit Differences across All Array Pairs The Hamming distance between two nonnegative integers is the number of bit positions at which their bin...

Coding & AlgorithmsBit ManipulationMath & Number Theory
0
0
7 people solved
Google logo
GoogleMicrosoftMeesho
Medium
Software Engineer

Count Distinct XOR Values from Index Triples

Problem You are given an array nums of length n that is a permutation of the integers 1 through n. For every index triple satisfying 0 <= i <= j <= k ...

Coding & AlgorithmsBit ManipulationMath & Number Theory
0
0
9 people solved
Microsoft logo
Microsoft
Medium
Software EngineerSenior+

Fewest Moves to Collect Every Key in a Grid With Locked Cells

You are given a rectangular grid as a list of equal-length strings. Each character is one of: - '@': the starting cell (there is exactly one); apart f...

Coding & AlgorithmsGraphsGrids & Matrices
1
0
14 people solved
Jun 16, 2026
Cerebras logo
Cerebras
Hard
Software Engineer

Design a Multi-Channel Message Queue

Design a Message Queue with Multi-Channel Messages and Channel-Based Subscriptions Context You are asked to design a message-queue data structure wher...

System DesignMessaging & Event-DrivenData Structure Design
20
0
183 people solved
Sep 6, 2025
OpenAI logo
OpenAI
Medium
Software Engineer Locked

Implement an IPv4 Range Iterator

This question evaluates implementing iterative data structures and range-handling algorithms alongside numeric representation of IPv4 addresses and bi...

Coding & AlgorithmsData Structure DesignIntervals & Scheduling
7
0
118 people solved
Jan 29, 2026
Amazon logo
Amazon
Hard
Software EngineerSenior+

Evaluate IP Access Rules

You are given a list of IPv4 access-control rules. Each rule consists of: - an action: allow or deny - a CIDR block such as 192.168.0.0/16 You are als...

Coding & AlgorithmsBit Manipulation
19
0
264 people solved
Feb 17, 2026
Google logo
Google
Medium
Software Engineer Locked

Generate all subsets (handle duplicates)

This question evaluates understanding of power-set generation and handling of duplicate elements, measuring competency in combinatorics, enumeration t...

Coding & AlgorithmsBacktracking & Recursion
15
0
121 people solved
Jan 4, 2026
Google logo
Google
Hard
Software Engineer

Minimum-Score Array Permutation

Minimum-Score Array Permutation You are given nums, a permutation of the integers from 0 through n - 1. For another permutation perm of those same int...

Coding & AlgorithmsDynamic ProgrammingBit Manipulation
0
0
7 people solved
Microsoft logo
Microsoft
Hard
Software Engineer Locked

Solve power jumps and graph tour

This pair of problems evaluates algorithmic problem-solving in number representation and combinatorial graph optimization, focusing on competencies in...

Coding & AlgorithmsDynamic ProgrammingGraphs
11
0
100 people solved
Apr 8, 2026
Airbnb logo
Airbnb
Medium
Software Engineer

Compute shortest path to collect all keys

You are given an m×n grid containing walls (#), open cells (.), a single start cell (@), up to six keys labeled 'a'–'f', and matching doors 'A'–'F' th...

Coding & AlgorithmsGrids & MatricesGraphs
14
0
162 people solved
Jul 31, 2025
Anthropic logo
Anthropic
Hard
Software Engineer

Optimize a compute kernel with a simulator

Performance Optimization Plan for a Compute Kernel Context You are given: - A compute kernel (single critical function or set of loops) to optimize. -...

System Design
23
0
317 people solved
Sep 6, 2025
Anthropic logo
Anthropic
Medium
Software Engineer

Design high-throughput hashing for kernels

Design a high-throughput hash-based lookup to be called inside a tight kernel. Choose between open addressing and chaining, specify the load factor, p...

Coding & AlgorithmsData Structure DesignMemory Management
25
0
260 people solved
Sep 6, 2025
Amazon logo
Amazon
Medium
Software Engineer

Largest Fixed AND Value for Sorting a Permutation

Problem You are given nums, a permutation of the integers from 0 through n - 1. Choose one nonnegative integer k. During the entire sorting process, y...

Coding & AlgorithmsBit ManipulationArrays & Strings
0
0
8 people solved
Snowflake logo
Snowflake
Medium
Software Engineer Locked

Compute effective permissions on DAG and prune tree

This set of problems evaluates proficiency in graph and tree algorithms, specifically transitive state propagation and conflict resolution on a DAG (e...

Coding & AlgorithmsGraphsTrees
31
0
303 people solved
Feb 12, 2026
Salesforce logo
Salesforce
Medium
Software Engineer

Convert Integer to Non-Adjacent Form

Convert Integer to Non-Adjacent Form Implement toNAF(n) that converts an integer n (allow negative n) to its Non-Adjacent Form using digits from {-1, ...

Coding & AlgorithmsBit ManipulationGreedy
17
0
139 people solved
Jul 28, 2025
Google logo
Google
Medium
Software Engineer Locked

Choose optimal guesses for green-only Wordle

This question evaluates probabilistic reasoning, expected-value optimization, information partitioning, and algorithmic efficiency in selecting guesse...

Coding & AlgorithmsMath & Number TheoryProbability
15
1
179 people solved
Oct 14, 2025
Meta logo
Meta
Medium
Machine Learning Engineer Locked

Implement exponentiation and fill grid distances

This question evaluates algorithmic problem-solving skills in the Coding & Algorithms domain, specifically numeric algorithms for fast exponentiation ...

Coding & AlgorithmsMath & Number TheoryGrids & Matrices
5
0
108 people solved
Jan 8, 2026
Meta logo
Meta
Medium
Machine Learning Engineer Locked

Maximize unique characters from a word list

This question evaluates algorithmic problem-solving skills focused on combinatorial subset selection and character-uniqueness constraints in strings, ...

Coding & AlgorithmsBacktracking & RecursionArrays & Strings
12
0
96 people solved
Feb 12, 2026
Box logo
Box
Medium
Software Engineer

Flip a specific bit in an integer

Given a non-negative integer num and a zero-based bit position p, return the integer resulting from flipping only the bit at position p (i.e., 0 becom...

Coding & AlgorithmsBit Manipulation
14
0
143 people solved
Aug 1, 2025
Uber logo
Uber
Hard
Software Engineer Locked

Solve two online assessment problems

This two-part prompt evaluates algorithmic problem-solving skills: the first problem tests optimization under index-based movement and number-theoreti...

Coding & AlgorithmsDynamic ProgrammingTrees
14
0
143 people solved
Mar 19, 2026
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