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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
Roblox logo
Roblox
Easy
Software Engineer Locked

Design Multi-Dimensional Request Rate Limiting

This question evaluates proficiency in designing distributed rate limiting systems, including API and data model design, consistency and scalability t...

System DesignRate Limiting
215
0
2619 people solved
May 4, 2026
Affirm logo
Affirm
Medium
Software Engineer

Design Installment-Loan Payment Processing

Design Installment-Loan Payment Processing Design a payment-processing system for an existing user's active installment loan. A payment may be initiat...

System DesignPayments & LedgersDistributed Transactions & Idempotency
41
0
337 people solved
Apr 19, 2026
Google logo
GoogleMetaBloomberg
Hard
Software Engineer

Evaluate Nested Unions and Concatenations of Words

Problem Evaluate the valid expression as a set of lowercase words. A letter denotes its one-letter word. Braces containing a comma-separated list of t...

Coding & AlgorithmsParsing & InterpretersBacktracking & Recursion
1
0
9 people solved
Apple logo
Apple
Medium
Software Engineer

Distinguish Endpoint and Survival Probabilities in a 3D Diagonal Walk

A walk starts at an integer position (x,y,z) in an8x8x8 grid, with0<=x,y,z<8. On each step it independently chooses one of the eight vectors (±1,±1,±1...

Statistics & MathProbabilityDynamic Programming
0
0
11 people solved
Aug 26, 2026
Hudson River Trading logo
Hudson River Trading
Medium
Software Engineer Locked

Count Matrix Cells Whose Row and Column Neighbors Match

This Hudson River Trading software engineering question asks candidates to count matrix cells whose row and column neighbors match. It is useful for p...

Software Engineering FundamentalsGrids & Matrices
23
0
245 people solved
Jul 2, 2026
IBM logo
IBM
Medium
Software Engineer Locked

Count Tree Vertices with Pythagorean Distances

Count tree vertices whose positive distances to three fixed vertices form a Pythagorean triple, including distance ordering and large-tree edge cases.

Coding & AlgorithmsTreesGraphs
11
0
141 people solved
Aug 31, 2026
Bloomberg logo
Bloomberg
Hard
Software Engineer

Count Alternative Insertion Orders for One BST

Problem Insert the distinct values of nums, a permutation of 1..n, into an empty binary search tree in their given order. Count other permutations of ...

Coding & AlgorithmsTreesMath & Number Theory
0
0
12 people solved
Ramp logo
Ramp
Medium
Software Engineer Locked

Implement a Single-Screen Tic-Tac-Toe Game with State Management

This Ramp software engineering question evaluates state management through a single-screen tic-tac-toe implementation. It helps candidates practice mo...

Software Engineering FundamentalsSimulation & State MachinesState Management
25
0
180 people solved
Jul 2, 2026
Google logo
Google
Medium
Software EngineerSenior+ Locked

Compute a Depth-Weighted Sum of a Nested List

Compute the depth-weighted sum of integers in an unevenly nested list. Compare recursive and iterative traversals while handling empty lists, negative...

Coding & AlgorithmsParsing & InterpretersMath & Number Theory
52
4
630 people solved
Aug 6, 2026
Google logo
GoogleMicrosoftBloomberg

Also asked at Bloomberg, Amazon, Meta, Salesforce

Hard
Software Engineer

Count Decimal One Digits up to a Bound

Problem Count all appearances of decimal digit 1 in the ordinary spellings of integers from 0 through n, inclusive. Count occurrences, not merely how ...

Coding & AlgorithmsMath & Number Theory
0
0
13 people solved
OpenAI logo
OpenAI
Medium
iOS EngineerSenior+ Locked

Implement A Mobile Chat Interface In An Existing Codebase

Prepare for a mobile engineering prompt about implementing a ChatGPT-style chat interface inside an unfamiliar existing codebase. The interview focuse...

Software Engineering FundamentalsiOSPrioritization & Tradeoffs
22
0
157 people solved
Jul 3, 2026
Microsoft logo
Microsoft
Medium
Software EngineerSenior+ Locked

Keep Stable Unique Column Names Across Schema Changes

Maintain stable case-insensitive unique column names across additions, removals, reordering, reappearance, and natural suffix collisions, with indepen...

Coding & AlgorithmsData Structure DesignArrays & Strings
4
0
42 people solved
Aug 30, 2026
Google logo
GoogleAmazonMicrosoft

Also asked at Microsoft, AppLovin, Meta, Bloomberg, Goldman Sachs, Agoda, Microstrategy, Roku, Salesforce, Wells Fargo

Easy
Software Engineer

Compare Two Backspace-Edited Strings

Problem Type each string into a separate empty editor. Lowercase letters append themselves and deletes the latest remaining character, doing nothing w...

Coding & AlgorithmsTwo Pointers & Sliding WindowStacks & Queues
1
0
12 people solved
Google logo
Google
Easy
Software Engineer

Weekday of a Valid Gregorian Date

Problem Given day, month and year, return its weekday spelled exactly as Sunday, Monday, Tuesday, Wednesday, Thursday, Friday or Saturday. The date is...

Coding & AlgorithmsMath & Number Theory
2
0
15 people solved
Meta logo
Meta
Medium
Software EngineerSenior+ AI Locked

Solve Tree Columns And Maze Variants

This question evaluates tree traversal and column-based grouping skills along with grid-based graph search, state modeling, and handling dynamic maze ...

Coding & Algorithms
8
0
99 people solved
May 21, 2026
Google logo
GoogleAmazonEY

Also asked at EY, Bloomberg, Microsoft, Meta

Medium
Software Engineer

Count Nonempty Binary Segments with an Exact Sum

Problem Given binary array nums and goal, count the nonempty contiguous subarrays whose sum equals goal. Return the number of index intervals, includi...

Coding & AlgorithmsArrays & StringsTwo Pointers & Sliding Window
0
0
12 people solved
IBM logo
IBM
Medium
Software Engineer Locked

Maximize Revenue from Depleting VM Stock

Practice maximizing revenue by repeatedly selling from the highest remaining VM stock, including harmless ties and large counts.

Coding & Algorithms
22
3
159 people solved
Aug 28, 2026
Apple logo
AppleAmazonMeta

Also asked at Meta, LinkedIn, Google, Wix, Atlassian, Yandex, MongoDB

Medium
Software Engineer

Find the Shared Ancestor Using Parent Links

Problem p and q are distinct nodes in the same binary tree. Each Node has fields val, left, right, and parent; the root’s parent is null. Return the n...

Coding & AlgorithmsTrees
1
0
12 people solved
Modal logo
Modal
Medium
Software Engineer Locked

Sort One Hundred Million Digits

Sort one hundred million digits from 0 through 9 with ten counters instead of a comparison sort. Discuss O(n) counting and reconstruction, constant au...

Software Engineering FundamentalsSorting
19
0
149 people solved
Jul 12, 2026
OpenAI logo
OpenAI
Hard
Software Engineer Locked

Design an Asynchronous Text-to-Video Generation Service

Design an asynchronous text-to-video service with observable job progress, cancellation, retries, artifact storage, and cost controls, while comparing...

System Design
15
0
153 people solved
Aug 13, 2026
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