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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
Netflix logo
Netflix
Medium
Software Engineer

Implement ordering and undo executor

The interview included two coding tasks: 1. Dependency ordering: Given a set of tasks and their dependency relationships, return a valid execution ord...

Coding & AlgorithmsGraphsStacks & Queues
29
1
224 people solved
Apr 15, 2026
IBM logo
IBM
Medium
Software Engineer Locked

Manage Authentication Tokens with a Fixed Time to Live

Implement authentication tokens with a fixed time to live across generate, renew, and count operations. Respect the exact expiry boundary, ignore rene...

Coding & AlgorithmsData Structure DesignSimulation & State Machines
13
0
195 people solved
Aug 23, 2026
Anthropic logo
Anthropic
Hard
Software Engineer Locked

Convert Stack Samples into Trace Events

Convert sampled root-to-leaf call stacks into a minimal sequence of start and end trace events. Use longest common prefixes between samples, close fra...

Coding & AlgorithmsStacks & QueuesArrays & Strings
15
0
266 people solved
Jul 8, 2026
Google logo
Google
Medium
Software Engineer

Count Visible People per Position When Only Someone Taller Than Both Blocks

People stand in a line, and heights[i] is the height of the person at position i. Two people can see each other if no one standing between them is tal...

Coding & AlgorithmsStacks & Queues
10
1
95 people solved
Jul 22, 2026
A
Addepar
Easy
Software Engineer Locked

Implement a URL-Prefix Sliding-Window Alert Monitor

Design a URL-prefix alert monitor with a 10-minute window, exact error thresholds, trie or dictionary storage, event expiration, and clear alert seman...

Software Engineering FundamentalsData Structure DesignTrees
3
0
44 people solved
Aug 24, 2026
Snowflake logo
Snowflake
Medium
Software Engineer Locked

Query Unique and Most-Frequent Keys in a Recent Event Window

Process a timestamp-ordered event stream while retaining only its most recent m arrivals. Answer historical-cutoff queries for distinct-key count and ...

Coding & AlgorithmsData Structure DesignStacks & Queues
27
0
220 people solved
Aug 3, 2026
Google logo
GoogleBloombergMicrosoft

Also asked at Microsoft, Meta, Amazon, IBM

Medium
Software Engineer

Report Consecutive Historical Price Spans as Quotes Arrive

Problem Implement StockSpanner() and next(price). Each next call appends today's price and returns the longest suffix of days, including today, whose ...

Coding & AlgorithmsData Structure DesignStacks & Queues
1
0
16 people solved
Notion logo
Notion
Medium
Software Engineer

Design a text editor with undo/redo

Design and implement a text document editor that maintains a single string of content and supports undo/redo of edits. Model each edit using the Comma...

Coding & AlgorithmsData Structure DesignLow-Level Design (OOP)
151
0
1353 people solved
Aug 13, 2025
Voleon logo
Voleon
Medium
Software Engineer

Simulate an exchange and participation-rate trading

Implement a simplified trading simulation in three parts. Part 1 — Process market data / exchange interaction (order book) Design a minimal limit-orde...

Coding & AlgorithmsTrading SystemsData Structure Design
139
0
1134 people solved
Dec 9, 2025
Google logo
GoogleMetaAmazon

Also asked at Amazon, Bloomberg, TikTok

Medium
Software Engineer

Score a Balanced Parenthesis Expression

Problem For balanced s, score "()" as 1, concatenation AB as score(A)+score(B), and nesting (A) as 2*score(A). Return the total score. `cpp class Solu...

Coding & AlgorithmsParsing & InterpretersStacks & Queues
1
0
12 people solved
Amazon logo
Amazon
Medium
Software EngineerNew Grad Locked

Inventory Allocation by Bid Priority

This question assesses simulation and priority-queue design skills, requiring careful implementation of tiered, round-robin resource allocation under ...

Coding & AlgorithmsSimulation & State MachinesSorting
31
0
299 people solved
Jun 9, 2026
Google logo
GoogleAndurilMicrosoft

Also asked at Microsoft, Meta, Bloomberg, Amazon, Apple, Uber, Databricks, TikTok, Airbnb, Applied Intuition

Medium
Software Engineer

Fewest Clear Cells From Corner to Corner

Problem In the square binary grid, travel from (0,0) to (n-1,n-1) using horizontal, vertical or diagonal steps to different neighboring cells. Every v...

Coding & AlgorithmsGrids & MatricesGraphs
0
0
11 people solved
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
11 people solved
Grammarly logo
Grammarly
Medium
Software Engineer

Implement a Transactional Key-Value Store

Design an in-memory key-value store that supports transactions. Required operations: - set(key, value): assign or overwrite the value for a key. - get...

Coding & AlgorithmsData Structure DesignStacks & Queues
20
0
214 people solved
Apr 6, 2026
Google logo
GoogleAmazonSprinklr
Hard
Software Engineer

Count Starts That Reach the End under Alternating Ordered Jumps

Problem From index i, every jump goes to a larger index j. Odd-numbered jumps choose the smallest value arr[j] at least arr[i]; even-numbered jumps ch...

Coding & AlgorithmsDynamic ProgrammingSorting
1
0
17 people solved
Oracle logo
Oracle
Medium
Software Engineer

Decide Whether a Parenthesis String With Star Wildcards Can Be Balanced

Given a string made only of the characters (, ) and `, decide whether it can be turned into a balanced parenthesis string by replacing every , indepen...

Coding & AlgorithmsGreedy
3
0
34 people solved
Sep 9, 2026
Amazon logo
AmazonGoogleMicrosoft

Also asked at Microsoft, Coupang, Meta, EPAM Systems, Bloomberg, PhonePe, TikTok, Zopsmart, Josh Technology, Deloitte, Zeta Global, Adobe, Oracle, ByteDance

Medium
Software Engineer

Minimize a Number After Removing Digits

Minimize a Number After Removing Digits Given a decimal string num representing a nonnegative integer and an integer k, delete exactly k digits. Keep ...

Coding & AlgorithmsGreedyStacks & Queues
0
0
11 people solved
Anthropic logo
Anthropic
Medium
Software Engineer Locked

Make a Hostname-Limited Crawler Concurrent

Build a concurrent hostname-limited crawler that removes fragments before deduplication, prevents duplicate fetches, and detects crawl completion corr...

Software Engineering FundamentalsConcurrencyGraphs
10
1
111 people solved
Sep 3, 2026
Amazon logo
AmazonMetaMicrosoft

Also asked at Microsoft, Google, Bloomberg

Easy
Software Engineer

Read Binary-Tree Values in Root-Left-Right Order

Problem Return a binary tree's values in preorder: visit the root, then its left subtree, then its right subtree. Omit absent children. `cpp vector<in...

Coding & AlgorithmsTrees
1
0
9 people solved
Google logo
GoogleAmazonBloomberg

Also asked at Bloomberg, Microsoft, Meta, Apple, Infosys, Qualcomm, Yandex, TikTok, Arista Networks

Easy
Software Engineer

Implement FIFO Operations with Two Stacks

Problem Implement MyQueue with its original constructor and push, pop, peek and empty methods. push appends a value, pop removes and returns the oldes...

Coding & AlgorithmsData Structure DesignStacks & Queues
1
0
12 people solved
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