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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
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
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
Bloomberg logo
Bloomberg
Easy
Software Engineer Locked

Compute meeting rooms and evaluate RPN

This multi-part question evaluates interval reasoning and resource-allocation skills for meeting room scheduling alongside stack-based expression eval...

Coding & AlgorithmsIntervals & SchedulingStacks & Queues
12
0
107 people solved
Jan 9, 2026
Snapchat logo
Snapchat
Medium
Software Engineer

Implement XML tokenizer and parser with operations

Implement XML tokenizer and parser with operations You are given either (a) a raw XML-like string such as <catalog><book><author>Gambardella, Matthew<...

Coding & AlgorithmsParsing & InterpretersTrees
6
0
115 people solved
Aug 10, 2025
Uber logo
Uber
Medium
Software Engineer

Compute final prices with next smaller discount

You are given an integer array prices of length n, where prices[i] is the original price of the i-th item. For each item i, find the first index j > i...

Coding & AlgorithmsStacks & QueuesArrays & Strings
8
0
107 people solved
Feb 11, 2026
Bloomberg logo
Bloomberg
Medium
Software Engineer

Solve two array and string problems

You will solve two independent coding tasks. Problem 1: Generate All Subsets of a Set You are given an integer array nums containing n distinct elemen...

Coding & AlgorithmsBacktracking & RecursionStacks & Queues
18
0
216 people solved
Oct 16, 2025
Bloomberg logo
Bloomberg
Medium
Software Engineer Locked

Validate whether brackets are properly nested

This question evaluates proficiency in sequence validation, paired-token matching, and the use of data structures to manage nested elements within str...

Coding & AlgorithmsStacks & Queues
15
0
117 people solved
Jan 6, 2026
Microsoft logo
Microsoft
Medium
Software Engineer Locked

Validate a JSON-like string

This question evaluates parsing and string-processing skills, focusing on structural validation of JSON-like text including matching and nesting of br...

Coding & AlgorithmsParsing & InterpretersStacks & Queues
11
0
158 people solved
Jan 6, 2026
Oracle logo
Oracle
Medium
Software Engineer

Solve three DSA problems: trie, window, intervals

1) Design and implement an autocomplete service. Support insert(word) to add a word and suggest(prefix) to return up to five existing words that start...

Coding & AlgorithmsString AlgorithmsIntervals & Scheduling
6
0
104 people solved
Sep 6, 2025
Bloomberg logo
Bloomberg
Medium
Software Engineer Locked

Solve common string/tree/grid interview tasks

This problem set evaluates practical coding competencies including string parsing and sign handling, positional and frequency-based matching for feedb...

Coding & AlgorithmsArrays & StringsTrees
14
0
106 people solved
Feb 12, 2026
Grammarly logo
Grammarly
Hard
Software Engineer

Solve interval merge and string dedup problems

You are given three coding questions from a phone screen. Solve each independently. 1) Merge overlapping intervals Input: A list of intervals interval...

Coding & AlgorithmsStacks & QueuesIntervals & Scheduling
46
0
321 people solved
Oct 22, 2025
Bloomberg logo
Bloomberg
Medium
Software Engineer Locked

Solve three coding tasks from onsite

This set of tasks evaluates array-based greedy reasoning for circular route feasibility, stack-based parsing for bracket matching, and grid/graph reac...

Coding & AlgorithmsGreedyGrids & Matrices
14
0
155 people solved
Feb 11, 2026
Bloomberg logo
Bloomberg
Medium
Software Engineer

Implement island counting with BFS and DFS

Question You are given an m x n grid of characters where '1' represents land and '0' represents water. Count the number of distinct islands (connected...

Coding & AlgorithmsGrids & Matrices
10
0
117 people solved
Jul 31, 2025
Meta logo
Meta
Medium
Software Engineer Locked

Determine feasibility and clean parentheses string

This pair of problems evaluates proficiency with graph algorithms (dependency modeling and cycle detection/topological ordering) and string processing...

Coding & AlgorithmsGraphsStacks & Queues
31
0
213 people solved
Feb 12, 2026
Uber logo
Uber
Medium
Software Engineer Locked

Implement an expiring counter class

This question evaluates a candidate's competency in implementing a sliding-window expiring counter, testing knowledge of streaming algorithms, data st...

Coding & AlgorithmsData Structure DesignStacks & Queues
11
0
100 people solved
Jan 6, 2026
Airtable logo
Airtable
Medium
Software Engineer Locked

Implement undo/redo with two stacks

This question evaluates a candidate's ability to design and implement efficient mutable state management and history tracking using data structures (s...

Coding & AlgorithmsData Structure DesignStacks & Queues
13
0
256 people solved
Jan 22, 2026
TikTok logo
TikTok
Medium
Software Engineer Locked

Parse a nested list from a string

This question evaluates proficiency in parsing nested data structures, string processing, hierarchical representation construction, and analysis of al...

Coding & AlgorithmsParsing & InterpretersStacks & Queues
10
0
112 people solved
Mar 1, 2026
BlackRock logo
BlackRock
Easy
Software Engineer

Design paint editor with undo/redo

Implement a simplified Paint editor that supports drawing on a 2D canvas and reverting changes using undo and redo operations. Canvas You are given a ...

Coding & AlgorithmsData Structure DesignGrids & Matrices
19
0
191 people solved
Dec 8, 2025
Bloomberg logo
Bloomberg
Medium
Software Engineer Locked

Solve sliding-window, flattening, decode, and O(1) random set

This multi-part question evaluates competence in string processing and nested parsing, linked-list flattening and recursion depth management, dynamic ...

Coding & AlgorithmsTwo Pointers & Sliding WindowData Structure Design
12
0
141 people solved
Feb 4, 2026
DoorDash logo
DoorDash
Medium
Software Engineer

Compute nearest-exit distances in a grid

Compute nearest-exit distances in a grid You are given a 2D grid representing a building floor with three cell types: -1 for walls, 0 for exits, and a...

Coding & AlgorithmsGrids & MatricesStacks & Queues
9
0
111 people solved
Jul 28, 2025
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