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Master your tech interviews with 18,000+ real questions from top companies.

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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
509
Companies
980
Updated
11.08.2026
509 Questions 980 Companies11.08.2026
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
Google logo
Google
Hard
Software Engineer Locked

Find Maximum Envelope Nesting

This question evaluates algorithmic problem-solving skills, particularly reasoning about multi-dimensional ordering, sequence optimization, and time-c...

Coding & AlgorithmsDynamic ProgrammingSorting
9
1
135 people solved
Mar 18, 2026
Confluent logo
Confluent
Medium
Software Engineer

Solve constrained monster traversal

Solve constrained monster traversal You are given a directed graph with n rooms labeled 0..n-1; each room i contains a monster with health hp[i] ≥ 0. ...

Coding & AlgorithmsGraphsBacktracking & Recursion
12
0
206 people solved
Jul 27, 2025
Meta logo
Meta
Medium
Software Engineer Locked

Maximize score in 15-sum card game

This question evaluates algorithmic problem-solving in combinatorial search, state-space optimization, and memoization by asking for the maximum achie...

Coding & AlgorithmsDynamic Programming
11
0
131 people solved
Jan 18, 2026
Airbnb logo
Airbnb
Medium
Software Engineer

Compute minimum-cost service cover

You are given: ( 1) a list of rental service packages, where each package contains a set of services (strings) and a non-negative price, e.g., [(["wif...

Coding & AlgorithmsDynamic Programming
31
0
243 people solved
Jul 26, 2025
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
Airbnb logo
Airbnb
Medium
Software Engineer Locked

Determine Exact Layover Booking

This question evaluates a candidate's competency in algorithmic problem solving, numerical precision handling, and combinatorial selection under exact...

Coding & AlgorithmsDynamic Programming
66
1
457 people solved
Apr 12, 2026
Meta logo
Meta
Hard
Software Engineer

Remove minimum invalid mixed brackets

Given a string s containing letters and bracket characters from the set (), [], {}, remove the minimum number of bracket characters so that the result...

Coding & AlgorithmsDynamic ProgrammingStacks & Queues
10
0
92 people solved
Feb 17, 2026
Uber logo
Uber
Hard
Software Engineer

Maximize stock profit with one or two trades

You are given an array prices where prices[i] is the price of a given stock on day i (0-indexed). You want to maximize your profit by choosing when to...

Coding & AlgorithmsDynamic Programming
6
0
102 people solved
Nov 17, 2025
DRW logo
DRW
Medium
Data Scientist

Solve three algorithmic tasks in Python

You are given 120 minutes to implement three independent algorithmic tasks in Python. Each task specifies the required input/output behavior, the cons...

Coding & AlgorithmsDynamic ProgrammingBinary Search
27
0
228 people solved
Jul 28, 2025
Salesforce logo
Salesforce
Medium
Software Engineer

Minimize steps to reduce integer

Given a positive integer n (1 <= n <= 2^61 - 1), in one step you may replace n with n/2 if n is even, or with n+1 or n-1 if n is odd. Return the minim...

Coding & AlgorithmsGreedyBit Manipulation
15
0
106 people solved
Sep 6, 2025
Salesforce logo
Salesforce
Medium
Software Engineer Locked

Minimize operations to reduce integer to zero

This question evaluates algorithmic problem-solving and integer-manipulation skills, specifically assessing the ability to reason about operation coun...

Coding & AlgorithmsGreedyBit Manipulation
13
0
141 people solved
Feb 11, 2026
Oracle logo
Oracle
Medium
Software EngineerSenior+

Maximum stock trading profit with at most two buy-and-sell transactions

You are given a list prices, where prices[i] is the price of one share of a stock on day i. You may complete at most two transactions, where a transac...

Coding & AlgorithmsDynamic Programming
0
0
10 people solved
Apr 3, 2026
xAI logo
xAI
Medium
Machine Learning EngineerIntern

Validate normalized palindromes with variants

Implement a function isNormalizedPalindrome(s) that returns true if s reads the same forward and backward after removing non‑alphanumeric characters a...

Coding & AlgorithmsTwo Pointers & Sliding Window
23
1
174 people solved
Jul 17, 2025
Airbnb logo
Airbnb
Medium
Software Engineer

Check inorder subsequence and edit tree minimally

Given a binary tree whose nodes store integers and an array target, determine whether target is a subsequence of the tree's inorder traversal (element...

Coding & AlgorithmsTreesDynamic Programming
28
1
258 people solved
Sep 6, 2025
Airbnb logo
Airbnb
Medium
Software Engineer

Maximize path score in DAG

Question Given a weighted directed acyclic graph (DAG) where each node v has a score w(v) and each edge (u→v) has a time cost t(u,v), starting from no...

Coding & AlgorithmsGraphsDynamic Programming
25
0
300 people solved
Aug 4, 2025
Amazon logo
Amazon
Medium
Software Engineer

Detect words formed by multiple dictionary parts

Given an array words of up to 100,000 non-empty lowercase strings (total characters ≤ 1,000,000), return all strings that can be formed by concatenati...

Coding & AlgorithmsString AlgorithmsDynamic Programming
4
0
79 people solved
Airbnb logo
Airbnb
Medium
Software Engineer

Maximize profit from non-overlapping jobs

You are given up to N = 200,000 jobs; each job i has a start time s_i, end time e_i (s_i < e_i), and reward w_i. Select a subset of non-overlapping jo...

Coding & AlgorithmsDynamic ProgrammingBinary Search
17
0
237 people solved
Jul 16, 2025
Airbnb logo
Airbnb
Medium
Software Engineer

Find max-score path in weighted DAG

You are given a directed acyclic graph (DAG). Each node v has a score w(v). Each directed edge (u→v) has a nonnegative time cost t(u,v). There is a un...

Coding & AlgorithmsGraphsDynamic Programming
44
1
405 people solved
Sep 6, 2025
Snowflake logo
Snowflake
Medium
Software Engineer Locked

Compute total time to finish all courses

This question evaluates competency in graph algorithms and scheduling, including dependency resolution, cycle detection, and aggregation of task durat...

Coding & AlgorithmsGraphsDynamic Programming
8
0
138 people solved
Jan 6, 2026
Amazon logo
Amazon
Medium
Software Engineer Locked

Answer two coding questions (SQL and DP)

This multi-part question evaluates SQL query skills (handling distinct values, aggregation and edge-case NULL results) and algorithmic proficiency in ...

Coding & AlgorithmsDynamic ProgrammingSQL
28
0
241 people solved
Feb 12, 2026
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