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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
639
Companies
980
Updated
11.10.2026
639 Questions 980 Companies11.10.2026
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
OpenAI logo
OpenAI
Medium
Machine Learning Engineer Locked

Simulate Grid Infection

This question evaluates skills in multi-source breadth-first search, synchronous simulation updates, boundary handling, and off-by-one correctness wit...

Coding & AlgorithmsGrids & MatricesSimulation & State Machines
34
0
235 people solved
Mar 9, 2026
Instacart logo
Instacart
Medium
Software Engineer

Evaluate a Target Variable from Assignments with Plus, Minus, Cycles and Conflicts

You are given a list of assignment equations, each of which assigns a value to one variable, and the name of a target variable. Compute the value of t...

Software Engineering FundamentalsGraphsParsing & Interpreters
1
0
14 people solved
Oct 10, 2026
Uber logo
Uber
Medium
Software Engineer

Produce a valid deployment order

You are given N services and a list of dependency pairs (A, B) meaning service B must be deployed before service A. Compute any valid deployment order...

Coding & AlgorithmsGraphs
21
0
148 people solved
Aug 12, 2025
Google logo
Google
Hard
Software Engineer Locked

Find minimum threshold enabling grid path

This question evaluates a candidate's understanding of grid pathfinding, reachability under constraints, and algorithmic optimization, focusing on ski...

Coding & AlgorithmsBinary SearchGrids & Matrices
15
1
212 people solved
Feb 11, 2026
DRW logo
DRW
Medium
Software Engineer

Solve three algorithmic OA tasks

Solve three algorithmic OA tasks Task 1 (Odd-frequency string): Given an integer N in [1..200000], write an algorithm that returns any length-N string...

Coding & AlgorithmsGraphsGreedy
21
0
231 people solved
Jul 31, 2025
Tesla logo
Tesla
Medium
Software Engineer

Solve classic array, graph, and parsing problems

Implement and analyze solutions to the following independent tasks: 1) Expression evaluator: Given a string s of digits, '+', '-', '*', '/', and space...

Coding & AlgorithmsArrays & StringsParsing & Interpreters
19
0
150 people solved
Aug 14, 2025
Oracle logo
Oracle
Medium
Software Engineer

Return a valid course completion order

You are given an integer n representing n courses labeled 0..n-1 and a list of prerequisite pairs prerequisites, where each pair [a, b] means you must...

Coding & AlgorithmsGraphs
14
0
117 people solved
Jan 26, 2026
Nextdoor logo
Nextdoor
Medium
Machine Learning Engineer

Implement ordering with dependency constraints

You are given n items labeled 0..n−1 and a list of precedence constraints edges[i] = [u, v] meaning u must appear before v. Return a valid ordering of...

Coding & AlgorithmsGraphsHeaps & Priority Queues
17
0
136 people solved
Sep 6, 2025
Amazon logo
AmazonSalesforceMicrosoft

Also asked at Microsoft, Google, Bloomberg, Flipkart, Goldman Sachs, ByteDance, ServiceNow, PhonePe, Blinkit

Medium
Software Engineer

Measure Infection Time from One Valued Binary-Tree Node

Problem At minute zero, the unique node with value start in a binary tree becomes infected. Each subsequent minute, infection spreads simultaneously a...

Coding & AlgorithmsTreesGraphs
0
0
7 people solved
DoorDash logo
DoorDash
Medium
Software Engineer

Compute delivery times on a grid

You are given a 2D grid with cells marked as 'M' (warehouses), 'C' (customers), 'X' (obstacles), and '.' (roads). You can move up, down, left, or righ...

Coding & AlgorithmsGrids & MatricesGraphs
19
0
135 people solved
Sep 6, 2025
Uber logo
Uber
Medium
Machine Learning Engineer

Compute currency conversion via graph search

Given a list of currency pairs, e.g., [('USD','CAD'), ('CAD','EUR'), ...], and a parallel list of conversion ratios [1.1, 1.2, ...] where ratio r mean...

Coding & AlgorithmsGraphs
16
0
241 people solved
Aug 13, 2025
Snowflake logo
Snowflake
Medium
Software Engineer

Solve build ordering and expression evaluation

Part A — Dependency ordering: You are given an integer n (0 ≤ n ≤ 200000) representing tasks labeled 0..n-1 and a list of prerequisite pairs [a, b] me...

Coding & AlgorithmsGraphsParsing & Interpreters
12
0
128 people solved
Sep 6, 2025
Microsoft logo
Microsoft
Medium
Data Scientist

Find common friends from directed edges

You have a directed edge list that records who followed whom. A mutual “friendship” exists only if both directions appear (A→B and B→A). Schema and sa...

Data Manipulation (SQL/Python)GraphsSQL
18
0
127 people solved
Oct 13, 2025
Google logo
Google
Hard
Software Engineer Locked

Minimize travel time with optional meeting point

This question evaluates a candidate's understanding of graph shortest-path computation and meeting-point optimization, testing skills in handling weig...

Coding & AlgorithmsGraphs
16
1
139 people solved
Jan 6, 2026
Amazon logo
AmazonBloombergMeta
Medium
Software Engineer

Odd-Cost Assignments on a Deepest Tree Path

Odd-Cost Assignments on a Deepest Tree Path You are given an undirected tree with n nodes labeled from 1 through n, rooted at node 1. The array edges ...

Coding & AlgorithmsTreesMath & Number Theory
1
0
9 people solved
Verkada logo
Verkada
Medium
Software Engineer

Find users with access to all cameras

Given entities and relationships (user, owns, camera), (user, belongs_to, group), (group, owns, camera), and (group, belongs_to, group) where groups c...

Coding & AlgorithmsGraphs
17
0
156 people solved
Aug 8, 2025
Amazon logo
AmazonBloomberg
Hard
Software Engineer

Best Recovery Score Within a Path Budget

Best Recovery Score Within a Path Budget You are given a directed acyclic graph with nodes 0 through n - 1. Each entry [u, v, cost] in edges is a dire...

Coding & AlgorithmsGraphsBinary Search
0
0
8 people solved
Microsoft logo
Microsoft
Hard
Software Engineer Locked

Return a topological ordering of a graph

This question evaluates understanding of graph algorithms—particularly topological sorting and cycle detection—and competency in ordering dependencies...

Coding & AlgorithmsGraphs
5
0
93 people solved
Jan 22, 2026
Bloomberg logo
Bloomberg
Medium
Software Engineer

Answer multi-round grid and data-structure questions

You are given several independent interview-style coding questions. 1) Find first/last occurrence in sorted array (+ dynamic updates follow-ups) Given...

Coding & AlgorithmsBinary SearchData Structure Design
26
0
195 people solved
Oct 30, 2025
Uber logo
Uber
Medium
Software Engineer

Find minimum activations to absorb all balls

You are given n balls on a 2D plane, where ball i is at coordinate \((x_i, y_i)\). You are also given a distance threshold d. Two balls are considered...

Coding & AlgorithmsGraphs
22
0
285 people solved
Mar 1, 2026
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