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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
LinkedIn logo
LinkedIn
Medium
Software Engineer Locked

Traverse a Binary Tree in Zigzag Level Order

Return binary-tree values level by level while alternating left-to-right and right-to-left order without changing level membership.

Coding & AlgorithmsTrees
7
0
59 people solved
Sep 12, 2026
Apple logo
AppleMicrosoftDatabricks

Also asked at Databricks, Google, Bloomberg, Roblox, Uber, Amazon, Yandex, Meta, Cloudflare, Snowflake, Affirm, Reddit, Coupang, Oracle

Medium
Software Engineer Locked

Implement a Five-Minute Hit Counter

Implement a HitCounter with two operations:. Make the API or object boundaries explicit, then cover invariants, edge cases, testing strategy, and oper...

Software Engineering FundamentalsData Structure DesignStacks & Queues
15
3
149 people solved
Apple logo
Apple
Medium
Software Engineer

Pin Down a Vague HTML Parser Prompt, Build the Element Tree, and Query It with DFS

You are asked to write an HTML parser. The prompt is deliberately vague: it does not define the input, the output, or which edge cases matter. Part of...

Software Engineering FundamentalsParsing & InterpretersTrees
1
0
22 people solved
Aug 31, 2026
Apple logo
Apple
Medium
Software Engineer

Solve 15 common Apple coding questions

The post summarizes high-frequency coding problems reported for Apple Software Engineer interviews. Practice the following algorithm and data-structur...

Coding & AlgorithmsTwo Pointers & Sliding Window
118
0
875 people solved
Jan 30, 2026
LinkedIn logo
LinkedIn
Medium
Software EngineerSenior+

Find the K Values Closest to a Target in a Binary Search Tree

A binary search tree holds distinct integer values: for every node, every value in its left subtree is smaller than the node's value and every value i...

Coding & AlgorithmsTrees
7
0
51 people solved
Aug 15, 2026
Meta logo
MetaGoogleBloomberg

Also asked at Bloomberg, Amazon, Microsoft, Snapchat, TikTok, Apple, Oracle, GE Digital, Rubrik, Millennium

Medium
Software Engineer

Remove the Fewest Parentheses to Restore Validity

Problem Remove as few parentheses as possible from s so the parentheses in the result are balanced: every prefix has at least as many opening as closi...

Coding & AlgorithmsStacks & QueuesGreedy
1
0
18 people solved
Google logo
Google
Medium
Software Engineer

Last Task Finish Time with Limited CPUs and a Fixed Task Duration

Tasks are scheduled to start at given times, and every task takes the same execution time. At most max_cpus tasks can run at the same moment, one task...

Coding & AlgorithmsIntervals & SchedulingHeaps & Priority Queues
3
0
48 people solved
May 26, 2026
Helmai logo
Helmai
Medium
Software Engineer

Detect a Deadlock from Thread Lock Acquire and Release Logs

You are given the event log of a multithreaded program, in the order the events happened. Each event records a thread requesting or releasing a lock. ...

Coding & AlgorithmsGraphsSimulation & State Machines
0
0
12 people solved
Sep 30, 2026
Google logo
GoogleAmazonMicrosoft

Also asked at Microsoft, Bloomberg, Meta, Databricks, Roblox, Yandex

Easy
Software Engineer

Maintain an Inclusive Three-Second Request Window

Problem Implement RecentCounter() and ping(t). A ping adds a request at integer millisecond time t and returns the number of recorded requests in the ...

Coding & AlgorithmsData Structure DesignStacks & Queues
2
0
17 people solved
Akuna Capital logo
Akuna Capital
Medium
Quantitative Researcher

Breadth-First Visiting Order of a City Road Network

A city network has n cities, numbered 0 to n - 1, and two-way roads between pairs of cities. Starting from a given city, return the order in which a b...

Coding & AlgorithmsGraphs
1
0
9 people solved
Sep 28, 2026
Decagon logo
Decagon
Easy
Software Engineer

Implement a CSAT Sliding Window Tracker

Design and implement a class that tracks customer satisfaction scores over a sliding time window. A customer support conversation has: - conversation_...

Coding & AlgorithmsData Structure DesignStacks & Queues
36
0
386 people solved
Apr 1, 2026
Google logo
GoogleMicrosoftBloomberg

Also asked at Bloomberg, Meta, Amazon

Easy
Software Engineer

Apply Score-Record Operations and Sum the Remaining Scores

Problem Start with an empty score record. An integer token appends that score; + appends the sum of the latest two remaining scores; D appends twice t...

Coding & AlgorithmsStacks & QueuesSimulation & State Machines
0
0
11 people solved
Grammarly logo
GrammarlyGoogleAmazon

Also asked at Amazon, Microsoft, Meta, Bloomberg

Hard
Software Engineer

Recover a Binary Tree from Preorder Values with Dash Depths

Problem The string traversal records a valid preorder walk of a binary tree. Each node is written as D dashes followed by its positive decimal value, ...

Coding & AlgorithmsTreesParsing & Interpreters
1
0
14 people solved
Oracle logo
Oracle
Easy
Software Engineer

Implement a Key-Value Cache with Fixed TTL, Renewal and a Live-Entry Count

Implement an in-memory key-value cache in which every entry expires a fixed time-to-live (TTL) after it was last written. The exercise follows the pat...

Software Engineering FundamentalsData Structure DesignTesting & Quality
5
0
43 people solved
Sep 25, 2026
Pinterest logo
Pinterest
Medium
Software Engineer

Track a User's Top Trending Viewed Pin Within a Sliding Time Window

On a visual discovery platform, every Pin has a trending score. Build a per-user feature that keeps track of the Pins a user has viewed within a recen...

Software Engineering FundamentalsData Structure DesignHeaps & Priority Queues
2
0
30 people solved
Jul 13, 2026
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
Google logo
GoogleVisaAxon

Also asked at Axon, Meta, Amazon, LinkedIn, Anthropic, IBM, Microsoft, Bloomberg, Apple, Uber, Illumio

Medium
Software Engineer

Separate Nested Function Calls into Exclusive Times

Problem Given chronological single-threaded call-stack logs id:start:t or id:end:t, return each function ID's total time executing at the top of the s...

Coding & AlgorithmsStacks & QueuesSimulation & State Machines
0
0
15 people solved
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