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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
18.6k
Companies
980
Updated
11.12.2026
18.6k 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
Amazon logo
Amazon
Medium
Applied ScientistSenior+ Locked

Highest Average-Salary Team in an Org Chart

This question evaluates a candidate's ability to traverse tree-structured data and perform subtree aggregation, applying recursive or bottom-up DFS te...

Coding & Algorithms
29
0
248 people solved
Jun 14, 2026
Airbnb logo
Airbnb
Medium
Software Engineer Locked

Allocate an Order from the Oldest Inventory Batches

Allocate an order from inventory batches in oldest-first order without mutating the input, honoring the reference-ID tie-break and reporting both per-...

Coding & Algorithms
13
0
159 people solved
Aug 1, 2026
Rippling logo
Rippling
Easy
Software EngineerIntern

Clarify and Solve Currency Conversion Queries with a Maximum-Amount Follow-up

Clarify and Solve Currency Conversion Queries with a Maximum-Amount Follow-up You are given currency exchange rates and conversion queries. Each query...

Software Engineering Fundamentals
16
0
218 people solved
Apr 25, 2026
Whatnot logo
Whatnot
Hard
Software Engineer Locked

Merge Two Sorted Arrays

Merge two nondecreasing integer arrays into a new sorted array while preserving every duplicate. Apply the two-pointer technique for linear time and o...

Coding & Algorithms
12
0
131 people solved
Jul 14, 2026
Instacart logo
Instacart
Medium
Software Engineer Locked

Calculate a Basket Total from Delimited Product Records

Parse SKU, product, quantity, and integer-cent prices to calculate a basket total, with repeated records, zero quantities, and exact integer arithmeti...

Coding & AlgorithmsParsing & InterpretersArrays & Strings
6
0
113 people solved
Sep 6, 2026
Rippling logo
Rippling
Medium
Software Engineer Locked

Prevent Duplicate Payments Under High Load

This system design question tests a candidate's ability to reason about idempotency, distributed consistency, and fault tolerance in high-throughput p...

System DesignPayments & LedgersDistributed Transactions & Idempotency
83
1
878 people solved
May 30, 2026
Databricks logo
Databricks
Medium
Software EngineerSenior+ Locked

Add Sliding-Window Get and Put Activity Metrics to a Key-Value Store

Extend an in-memory key-value store with averageGet(window) and averagePut(window) activity metrics for sliding windows of one hour, one day, and one ...

Software Engineering FundamentalsTwo Pointers & Sliding WindowKey-Value Stores
21
0
157 people solved
Jul 30, 2026
Databricks logo
Databricks
Hard
Software Engineer Locked

Find a Path Between Nodes in a Fibonacci Tree

Practice a Databricks coding interview problem focused on find a path between nodes in a fibonacci tree. The prompt emphasizes edge cases, clean imple...

Coding & Algorithms
13
0
130 people solved
May 30, 2026
Google logo
Google
Medium
Software Engineer Locked

Design an Agent for Internal Document Search

Design an internal document-search agent with permission-aware ingestion and retrieval, grounded answers, citations, and useful abstention. Address ch...

ML System Design
8
1
110 people solved
Aug 11, 2026
ByteDance logo
ByteDance
Hard
Machine Learning Engineer

Combined Median of Two Sorted Integer Lists in Logarithmic Time

You are given two integer arrays, nums1 and nums2, each sorted in non-decreasing order. Return the median of all the values of both arrays taken toget...

Coding & AlgorithmsBinary Search
1
0
28 people solved
Sep 20, 2026
SIG (Susquehanna) logo
SIG (Susquehanna)
Easy
Data Scientist Locked

Count Grid Paths with No Three Equal Moves

Count lattice paths from (0, 0) to (5, 5) that never use three identical directions consecutively. The solution converts paths into alternating runs o...

Statistics & Math
7
0
57 people solved
Aug 16, 2026
Google logo
Google
Medium
Product Manager

Evaluate a Standalone Short-Form Learning Feed for YouTube

You are a product manager at YouTube. Decide whether YouTube should launch its own feed devoted entirely to brief educational videos, separate from it...

Product Design & StrategyProduct StrategyMetrics & KPIs
1
0
13 people solved
Sep 23, 2026
Google logo
GoogleMicrosoftAmazon

Also asked at Amazon, Bloomberg, Meta, Cognizant

Easy
Software Engineer

Keep Customers without a Referee or Referred by Someone Other Than Two

Problem Return customer names when referee_id is not 2, or when no referee is recorded. A NULL referee_id represents no referral and must be retained....

Data Manipulation (SQL/Python)SQL
1
0
12 people solved
BCG logo
BCG
Medium
Forward Deploy EngineerSenior+ Locked

Shortest Distance in an Unweighted Adjacency-Matrix Graph

Find the minimum edge count between two vertices in a connected, undirected graph represented by a Boolean adjacency matrix. The problem tests travers...

Coding & Algorithms
9
0
94 people solved
Aug 16, 2026
Google logo
GoogleAmazonMeta

Also asked at Meta, Citadel, CoinDCX

Medium
Software Engineer

Count Ordered Dice Outcomes With a Given Total

Problem Roll n dice, each with faces 1 through k. Count ordered outcomes whose sum equals target, and return the count modulo 1000000007. Different ch...

Coding & AlgorithmsDynamic ProgrammingMath & Number Theory
1
0
16 people solved
Snowflake logo
Snowflake
Medium
Software Engineer

Design a Cron Job Scheduler

Design a distributed cron job scheduler — a service that triggers user-defined jobs on recurring, cron-style schedules. Assume worker (execution) capa...

System DesignJob Scheduling & WorkflowsDistributed Coordination
94
1
916 people solved
Apr 12, 2026
Plaid logo
Plaid
Medium
Software Engineer

Design a coupon redemption system

Implement an in-memory coupon service supporting: addCoupon(code, discount, expiresAt, totalLimit, perUserLimit); redeem(userId, code, now) -> success...

Coding & AlgorithmsData Structure Design
61
0
1150 people solved
Sep 6, 2025
Imc logo
Imc
Hard
Quantitative TraderIntern

Analyze Optimal Funding Allocations Across Election Districts

Prompt Two players allocate nonnegative integer funding units across labeled election districts. In each district, the player with more funding wins t...

Statistics & Math
27
0
200 people solved
Nov 30, 2025
Google logo
GoogleMicrosoftAmazon

Also asked at Amazon, Bloomberg, HashedIn, Roblox, Meta, Salesforce, Infosys, Uber, TikTok, ServiceNow, Capital One

Hard
Software Engineer

Count Contiguous Subarrays with Exactly K Distinct Values

Problem Return the number of nonempty contiguous subarrays of nums containing exactly k different integers. Different index intervals count separately...

Coding & AlgorithmsTwo Pointers & Sliding WindowArrays & Strings
1
0
19 people solved
Plaid logo
Plaid
Easy
Software Engineer

Design a ChatGPT-like conversational assistant

Design a ChatGPT-like conversational assistant product. Assume you need to support: - Multi-turn chat with conversation history - Streaming responses ...

System DesignSystem Design FundamentalsLLM Applications
94
0
702 people solved
Feb 4, 2026
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