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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
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
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
Roblox logo
Roblox
Medium
Data Scientist

Implement streaming CTR with deduplication

Implement a Python function to compute streaming, per-campaign CTR over a sliding 24-hour window with click de-duplication and late-arriving events. R...

Coding & AlgorithmsBatch & Stream ProcessingArrays & Strings
14
0
143 people solved
Oct 13, 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
Amazon logo
Amazon
Hard
Software Engineer

Sum Every Segment Minimum Multiplied by Its Segment Sum

Problem For every nonempty contiguous subarray of strength, multiply its minimum value by the sum of its values. Add these products for all subarrays ...

Coding & AlgorithmsStacks & QueuesArrays & Strings
0
0
8 people solved
Amazon logo
AmazonGoogleMicrosoft
Medium
Software Engineer

Erase Each Star and Its Nearest Remaining Letter to the Left

Problem Repeatedly choose a star in s and remove it together with the closest non-star character to its left. The input guarantees valid removals and ...

Coding & AlgorithmsStacks & QueuesArrays & Strings
0
0
7 people solved
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
Roblox logo
Roblox
Easy
Machine Learning Engineer

Extend counter to per-client rate limiting

You are extending the recent-requests counter to support per-client rate limiting. Each request now includes a clientId identifying the caller. You mu...

Coding & AlgorithmsData Structure DesignTwo Pointers & Sliding Window
9
0
184 people solved
Dec 8, 2025
LinkedIn logo
LinkedIn
Medium
Software Engineer

Validate parentheses with one or three bracket types

Problem Given a string s consisting only of bracket characters, determine whether it is valid. A string is valid if: - Every opening bracket has a cor...

Coding & AlgorithmsStacks & Queues
9
1
106 people solved
Oct 20, 2025
Applied Intuition logo
Applied Intuition
Medium
Software Engineer

Design a nested transaction store

Implement an in-memory key–value store that supports nested transactions with the operations: SET key value, RETURN key, BEGIN, APPLY (commit current ...

Coding & AlgorithmsData Structure Design
53
0
369 people solved
Sep 6, 2025
Airbnb logo
Airbnb
Medium
Software Engineer

Solve Linked-List and Iterator Problems

You are asked to solve two coding problems. Problem 1: Detect shared nodes between possibly cyclic linked lists You are given the heads of two singly ...

Coding & AlgorithmsLinked ListsData Structure Design
21
0
209 people solved
Apr 8, 2026
Instacart logo
Instacart
Medium
Software Engineer

Evaluate an arithmetic expression

Write a function that evaluates a mathematical expression given as a string. Requirements: - Supports non-negative integers and whitespace. - Supports...

Coding & AlgorithmsParsing & Interpreters
22
0
173 people solved
Mar 4, 2026
Snowflake logo
Snowflake
Medium
Software Engineer Locked

Solve three coding rounds

This multi-part question evaluates algorithmic problem-solving and practical implementation skills, covering grid geometry and distance metrics for ne...

Coding & AlgorithmsData Structure DesignParsing & Interpreters
27
0
233 people solved
Mar 1, 2026
Amazon logo
Amazon
Medium
Software Engineer

Highest-total path through a binary tree encoded in level order

A binary tree stores an integer at every node, and values may be negative. A path is a sequence of nodes in which each pair of consecutive nodes is jo...

Coding & AlgorithmsTreesDynamic Programming
1
0
13 people solved
Jun 21, 2026
Chime logo
Chime
Medium
Software Engineer

Implement single-tab browser history navigation

Implement a BrowserSession for a single-tab browser. APIs: - BrowserSession(string homepage): Initialize with homepage; current page starts at homepag...

Coding & AlgorithmsData Structure Design
17
0
252 people solved
Sep 6, 2025
Meta logo
Meta
Medium
Site Reliability Engineer Locked

Implement a Streaming VMStat Alert

This question evaluates streaming data processing skills, sliding-window counting algorithms, and efficient online state management for metric monitor...

Coding & AlgorithmsObservabilityStacks & Queues
8
0
113 people solved
Apr 6, 2026
OpenAI logo
OpenAI
Medium
Software Engineer Locked

Compute infection spread time

This question evaluates understanding of grid-based graph traversal and propagation dynamics, testing competencies in breadth-first search concepts, s...

Coding & AlgorithmsGrids & MatricesStacks & Queues
13
0
198 people solved
Jan 9, 2026
Google logo
Google
Medium
Software Engineer Locked

Detect and remove matched words in a char stream

This question evaluates understanding of online stream processing, substring matching, and the use of efficient data structures and algorithms for rea...

Coding & AlgorithmsString Algorithms
45
2
300 people solved
Feb 7, 2026
Google logo
Google
Medium
Software Engineer

Solve three coding interview problems

You are given three independent coding questions. 1) Decode an encoded string Given an encoded string s, decode it using the following rule: - Pattern...

Coding & AlgorithmsDynamic ProgrammingGrids & Matrices
28
1
321 people solved
Oct 9, 2025
Google logo
Google
Medium
Software EngineerNew Grad Locked

Search a Pattern Across the Leaf Text of a Binary Tree

Search for a pattern across the left-to-right concatenation of binary-tree leaf strings, including matches that cross leaf boundaries. This algorithm ...

Coding & AlgorithmsString AlgorithmsTrees
29
1
235 people solved
Jun 17, 2026
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