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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
Rippling logo
Rippling
Medium
Machine Learning Engineer

Implement stack and interval algorithms with tests

Implement three coding tasks and design your own unit tests for each. 1) Validate Bracket String with a Stack - Input: a string s containing only '(',...

Coding & AlgorithmsStacks & QueuesIntervals & Scheduling
24
0
168 people solved
Aug 12, 2025
Snowflake logo
Snowflake
Medium
Software Engineer

Design an in-memory filesystem and circular queue

Part A — Design an in-memory hierarchical file system. Requirements: - Support operations: ls(path), mkdir(path), createFile(path, content), appendToF...

Coding & AlgorithmsData Structure DesignStacks & Queues
12
0
176 people solved
Aug 11, 2025
StackAdapt logo
StackAdapt
Easy
Software Engineer

Design a time-windowed key-value store

Implement a time-windowed key-value store ("Windowed Map") that receives key/value updates at irregular times and only keeps entries from the most rec...

Coding & AlgorithmsData Structure DesignStacks & Queues
15
0
198 people solved
Mar 4, 2025
Apple logo
Apple
Medium
Software Engineer

Compute island size in grid

Compute island size in grid Given an m x n binary matrix grid of 0s (water) and 1s (land), where an island is a group of 1s connected 4-directionally,...

Coding & AlgorithmsGrids & Matrices
14
0
103 people solved
Aug 9, 2025
Microsoft logo
Microsoft
Medium
Software Engineer

Implement a generic tree Node class

Design and implement a Node class for a mutable rooted tree. Requirements: store value, parent, and ordered children; support add_child, remove, move_...

Coding & AlgorithmsTreesLow-Level Design (OOP)
16
0
110 people solved
Aug 14, 2025
Snapchat logo
Snapchat
Medium
Software Engineer

Solve Open the Lock BFS

Question LeetCode 752. Open the Lock – Given an initial lock state "0000", a target combination, and a list of deadend combinations that cannot be use...

Coding & AlgorithmsGraphsStacks & Queues
10
0
146 people solved
Aug 4, 2025
Instacart logo
Instacart
Medium
Software Engineer

Evaluate arithmetic expression using DFS

Given a string representing an arithmetic expression with non-negative integers, +, -, *, /, parentheses, and optional spaces, evaluate its value. Use...

Coding & AlgorithmsParsing & InterpretersStacks & Queues
9
0
135 people solved
Jul 31, 2025
PayPal logo
PayPal
Medium
Software Engineer Locked

Solve common search/parse/graph frequency tasks

This multi-part question evaluates algorithmic problem-solving skills across searching and sorting variants, rotated-array search, nested string decod...

Coding & AlgorithmsBinary SearchGraphs
8
0
97 people solved
Jan 6, 2026
Snowflake logo
Snowflake
Medium
Software Engineer

Implement crawler and bracket validator

Implement two tasks: ( 1) Write a function crawl(start_urls, fetch, max_depth, domain_filter) that visits pages starting from the given seed URLs usin...

Coding & AlgorithmsGraphsStacks & Queues
18
0
207 people solved
Sep 6, 2025
Instacart logo
Instacart
Medium
Software Engineer

Evaluate arithmetic expression with precedence

Question Implement an evaluator for a string arithmetic expression. The input contains non-negative integers, the operators +, -, `, /, parentheses ( ...

Coding & AlgorithmsParsing & InterpretersStacks & Queues
16
0
147 people solved
Aug 1, 2025
LinkedIn logo
LinkedIn
Medium
Software Engineer

Design a max-stack with efficient operations

Design a max-stack with efficient operations Design a stack that supports push (x), pop(), top(), peekMax(), and popMax(). The popMax operation must r...

Coding & AlgorithmsData Structure DesignStacks & Queues
15
0
122 people solved
Aug 8, 2025
Airtable logo
Airtable
Medium
Software Engineer

Implement spreadsheet undo/redo operations

Problem Design a data structure that simulates Undo/Redo for a simplified spreadsheet editor. A user performs a sequence of operations on cells. Each ...

Coding & AlgorithmsData Structure Design
57
0
464 people solved
Nov 4, 2025
Amazon logo
Amazon
Medium
Software Engineer Locked

Design a File Searcher With Symbolic Links

Design an in-memory file searcher that filters regular files by suffix and size while optionally following symbolic links. Define deterministic paths ...

Software Engineering FundamentalsGraphs
8
0
84 people solved
Jul 10, 2026
Citadel logo
Citadel
Easy
Software Engineer Locked

Implement an in-memory order book API

This question evaluates understanding of in-memory data structures and API design for maintaining ordered collections with FIFO semantics, correctness...

Coding & AlgorithmsData Structure DesignTrading Systems
9
0
182 people solved
Jan 1, 2026
Balyasny logo
Balyasny
Hard
Software Engineer Locked

Return the Minimum in Each Sliding Window

Return the minimum value in every fixed-size sliding window, including duplicate minima, negative values, and boundary window sizes.

Coding & AlgorithmsStacks & QueuesTwo Pointers & Sliding Window
4
1
33 people solved
May 25, 2026
Grammarly logo
Grammarly
Medium
Software Engineer Locked

Remove adjacent duplicates and handle tree input

This question evaluates string-processing and tree-construction skills, including efficient removal of adjacent or k-sized duplicate groups in strings...

Coding & AlgorithmsStacks & QueuesTrees
15
0
126 people solved
Jan 22, 2026
TikTok logo
TikTok
Easy
Data Scientist

Implement stacks, streaming median, and upward path sum

Complete the following coding problems. State the time/space complexity and key edge cases for each. 1) MinStack Design a stack that supports: - push(...

Coding & AlgorithmsData Structure DesignHeaps & Priority Queues
16
0
191 people solved
Feb 17, 2026
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
Apple logo
Apple
Easy
Software Engineer Locked

Implement flood fill using BFS and DFS

This question evaluates proficiency in graph traversal and matrix manipulation, specifically the implementation of BFS and DFS variants for flood fill...

Coding & AlgorithmsGrids & Matrices
19
1
238 people solved
Jan 22, 2026
Meta logo
Meta
Medium
Software Engineer Locked

Solve maze reachability and two follow-ups

This set of tasks evaluates graph and state-space search with constrained movement (maze rolling ball), tree algorithms and recursion for computing di...

Coding & AlgorithmsGrids & MatricesGraphs
14
0
110 people solved
Feb 7, 2026
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