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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
404
Companies
980
Updated
11.12.2026
404 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
Amazon logo
AmazonGoogleMeta

Also asked at Meta, Microsoft, Deshaw, Bloomberg, Chubb

Medium
Software Engineer

Sum Every Subarray's Maximum-Minus-Minimum

Problem For each nonempty contiguous subarray of nums, its range is the largest value minus the smallest value in that subarray. Return the sum of the...

Coding & AlgorithmsStacks & QueuesArrays & Strings
1
0
11 people solved
LinkedIn logo
LinkedIn
Medium
Data EngineerSenior+

Implement a stack supporting max and popMax

Design a data structure that behaves like a stack but also supports retrieving and removing the current maximum value. Implement a class MaxStack with...

Coding & AlgorithmsData Structure DesignStacks & Queues
13
0
118 people solved
Feb 2, 2026
Pinterest logo
Pinterest
Hard
Machine Learning EngineerSenior+ Locked

Support room moves and query top-k fastest

This question evaluates understanding of dynamic data structure design and ordering semantics, specifically maintaining per-room FIFO arrival order, c...

Coding & AlgorithmsData Structure Design
14
0
105 people solved
Jan 12, 2026
Instacart logo
Instacart
Medium
Software Engineer

Decode an encoded string

Implement a decoder for an encoded string where repetition is expressed with a number followed by a bracketed substring. Rules: - A pattern k[substrin...

Coding & AlgorithmsStacks & Queues
24
0
286 people solved
Mar 4, 2026
LinkedIn logo
LinkedIn
Medium
Machine Learning Engineer Locked

Implement alert queries and spike detection

This question evaluates a candidate's skills in streaming data structures, time-windowed aggregation, in-memory analytics for high-throughput alert in...

Coding & AlgorithmsReal-Time SystemsStacks & Queues
11
0
141 people solved
Feb 11, 2026
Meta logo
Meta
Medium
Software EngineerSenior+

Longest Balanced Substring in a String of Parentheses

Reported from a Meta software engineering coding round. You are given a string s that contains only the characters ( and ). A string is balanced if it...

Coding & AlgorithmsStacks & QueuesDynamic Programming
1
0
14 people solved
Mar 26, 2026
Meta logo
MetaWells FargoGoogleBolt

Also asked at Google, Bolt

Easy
Software Engineer

Find the Shortest Length After Removing AB and CD

Find the Shortest Length After Removing AB and CD You are given a string s containing only uppercase English letters. In one operation, remove any occ...

Coding & AlgorithmsStacks & QueuesArrays & Strings
0
0
10 people solved
Anthropic logo
Anthropic
Medium
Software Engineer

Simulate stack traces from logs

Given a list of log entries describing function calls, each formatted as "<id> <event> <timestamp>" where event ∈ {START, END} and timestamps are inte...

Coding & AlgorithmsStacks & Queues
71
0
652 people solved
Sep 6, 2025
EvenUp logo
EvenUp
Medium
Software Engineer

Simulate a two-player card war game

Simulate a two-player card war game Implement a function to simulate a two-player card game. Each player has a queue of card ranks (top at index 0), w...

Coding & AlgorithmsSimulation & State Machines
42
1
347 people solved
Aug 10, 2025
Figma logo
Figma
Easy
Software Engineer Locked

Implement Memory-Efficient Document Undo/Redo

This question evaluates data structure design and algorithmic reasoning for implementing memory-efficient undo/redo semantics on a key-value document,...

Coding & AlgorithmsData Structure DesignArrays & Strings
26
0
198 people solved
Jan 12, 2026
Google logo
Google
Medium
Software Engineer

Determine validity after digit-constrained deletions

Determine validity after digit-constrained deletions You're given a string S of length n consisting only of '(' , ')' , and digits '0'–'9'. For every ...

Coding & AlgorithmsStacks & QueuesGreedy
30
2
336 people solved
Aug 8, 2025
Anthropic logo
Anthropic
Medium
Software Engineer

Parse and Reconstruct Stack Trace

Given a multi-line stack trace string from a single thread (e.g., each frame is in the form 'at Module::Function(file:line)'), design and implement a ...

Coding & AlgorithmsParsing & InterpretersTrees
67
1
1010 people solved
Sep 6, 2025
Snowflake logo
Snowflake
Medium
Software Engineer

Time-Versioned Key-Value Store and Time-Window Event Counter

Build two small time-aware data structures. The first is a key-value store that keeps every value a key has had, each tagged with the timestamp at whi...

Software Engineering FundamentalsData Structure DesignBinary Search
1
0
16 people solved
Apr 28, 2026
Anthropic logo
Anthropic
Medium
Software Engineer

Compute exclusive times and call stack from logs

Design an algorithm that, given a single-threaded program's execution log, computes per-function exclusive durations and reconstructs the active call ...

Coding & AlgorithmsStacks & Queues
27
0
318 people solved
Sep 6, 2025
Google logo
Google
Easy
Software Engineer

Implement Batched Undo/Redo Layer

You are implementing a simplified document layer for a design tool. The layer stores properties as a map<string, string>. Implement a class that suppo...

Coding & AlgorithmsData Structure DesignStacks & Queues
17
0
140 people solved
Feb 4, 2026
NVIDIA logo
NVIDIA
Medium
Software Engineer Locked

Solve small string and API tasks

This question evaluates proficiency in string algorithms (bracket validation and longest non-repeating substring) and practical API skills including H...

Coding & AlgorithmsStacks & QueuesAPI Integration & HTTP Clients
14
0
185 people solved
Feb 9, 2026
Netflix logo
Netflix
Hard
Software Engineer Locked

Design command executor with undo

This question evaluates understanding of the command pattern, state and history management, failure handling, and appropriate data structure use for i...

Coding & AlgorithmsLow-Level Design (OOP)Stacks & Queues
19
0
141 people solved
Jan 20, 2026
Datologyai logo
Datologyai
Easy
Software Engineer

Text Editor with a Cursor: Typing, Backspace, and Four-Way Cursor Movement

Implement a TextEditor class that holds one document and a cursor. The cursor sits between two characters, or at the start or end of the text, and eve...

Software Engineering FundamentalsData Structure DesignStacks & Queues
3
0
52 people solved
Jan 1, 2026
Vercel logo
Vercel
Medium
Software Engineer

Design hit counter for last 5 minutes

You are launching a new webpage and need a last-minute server-side metric to track popularity in real time. Implement a hit counter that supports the ...

Coding & AlgorithmsData Structure DesignStacks & Queues
34
0
240 people solved
Jan 1, 2026
Amazon logo
AmazonBloombergGoogleMeta

Also asked at Google, Meta

Easy
Software Engineer

Average Binary-Tree Values at Each Depth

Problem Return the average node value at every depth of the binary tree, starting with the root level. TreeNode exposes val,left,right. Answers within...

Coding & AlgorithmsTreesStacks & Queues
0
0
7 people solved
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