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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
Oracle logo
Oracle
Medium
Software Engineer

Detect whether a directed graph given as an edge list contains a cycle

You are given a directed graph with n nodes labeled 0 to n - 1 and a list of directed edges. Return whether the graph contains at least one directed c...

Coding & AlgorithmsGraphs
0
0
14 people solved
Aug 1, 2026
Verkada logo
Verkada
Medium
Software Engineer Locked

Find user who can access every camera

This question evaluates reasoning about access-control and transitive relationships, testing skills in graph modeling, reachability, and set operation...

Coding & AlgorithmsGraphsAuthentication & Authorization
20
0
154 people solved
Feb 11, 2026
DRW logo
DRW
Medium
Software Engineer

Solve odd-string, digit swap, patient slot assignment

Question Task 1 – Odd-occurrence string: Write a function that, given an integer N (1..200 000), returns a length-N lowercase string in which every le...

Coding & AlgorithmsGraphsArrays & Strings
13
0
237 people solved
Aug 4, 2025
Scale AI logo
Scale AI
Medium
Software Engineer Locked

Implement a Task Processor

This question evaluates understanding of priority-based scheduling and dependency resolution, focusing on data structures and graph-ordering concepts ...

Coding & AlgorithmsData Structure DesignHeaps & Priority Queues
46
0
403 people solved
Feb 27, 2026
Adobe logo
Adobe
Medium
Software Engineer

Determine task order with prerequisites

You are given n tasks labeled 0..n−1 and a list of prerequisite pairs (a, b) meaning task b must be completed before task a. Determine one valid order...

Coding & AlgorithmsGraphs
17
0
120 people solved
Sep 6, 2025
BlackRock logo
BlackRock
Medium
Software Engineer

Solve hierarchy distance and digit-square convergence

You have two independent tasks: A) Organization hierarchy distance Given a list of (employee, manager) pairs that form a complete hierarchy (a single ...

Coding & AlgorithmsTreesMath & Number Theory
6
0
127 people solved
Sep 6, 2025
Coinbase logo
Coinbase
Hard
Software Engineer

Maximize block fee with transaction selection

You are given N transactions. Each transaction has: - id (unique identifier) - size (positive integer) - fee (positive integer) You are building a blo...

Coding & AlgorithmsGreedy
37
0
401 people solved
Feb 13, 2026
Meta logo
Meta
Medium
Software EngineerSenior+

Find All Binary Tree Nodes Exactly K Edges from a Target Node

You are given a binary tree whose node values are all distinct, the value of a target node, and a non-negative integer k. Return the values of every n...

Coding & AlgorithmsTreesGraphs
0
0
14 people solved
Apr 1, 2026
Waymo logo
Waymo
Medium
Software Engineer Locked

Compute ETA between two map nodes

This question evaluates proficiency in graph algorithms and shortest-path computation, specifically handling weighted directed graphs, non-negative tr...

Coding & AlgorithmsGraphs
25
0
219 people solved
Feb 11, 2026
Google logo
Google
Hard
Software Engineer Locked

Compute minimax grid path and network delay

This question evaluates algorithmic problem-solving in shortest-path and path-optimization contexts, specifically minimax pathfinding on a grid and si...

Coding & AlgorithmsGraphsBinary Search
25
0
303 people solved
Jan 22, 2026
Amazon logo
AmazonGoogle
Medium
Software Engineer

Minimum Swaps for Digit-Sum Order

Minimum Swaps for Digit-Sum Order You are given an array nums of distinct positive integers. Its required order is increasing decimal digit sum. When ...

Coding & AlgorithmsSortingArrays & Strings
0
0
6 people solved
Google logo
Google
Hard
Software Engineer

Shortest Paths in a Value-Difference Graph

Shortest Paths in a Value-Difference Graph There are n nodes labeled 0 through n - 1. Node i has integer value nums[i]; these values are not necessari...

Coding & AlgorithmsGraphsSorting
0
0
8 people solved
Microsoft logo
Microsoft
Medium
Software EngineerSenior+

Fewest Moves to Collect Every Key in a Grid With Locked Cells

You are given a rectangular grid as a list of equal-length strings. Each character is one of: - '@': the starting cell (there is exactly one); apart f...

Coding & AlgorithmsGraphsGrids & Matrices
1
0
14 people solved
Jun 16, 2026
ByteDance logo
ByteDance
Medium
Software Engineer

Design a Currency Exchange Rate Calculation and Conversion System

Design a system that calculates currency exchange rates and uses them to convert amounts between currencies for other services. Only the topic was rep...

System DesignSystem Design FundamentalsCaching
1
0
10 people solved
May 15, 2026
Snowflake logo
Snowflake
Medium
Software Engineer

Check Whether a Proposed Course Order Respects Every Prerequisite

Courses are numbered 0 to n - 1, and some courses must be taken before others. Given a proposed order of courses, decide whether it is a valid order i...

Coding & AlgorithmsGraphs
2
0
22 people solved
Apr 28, 2026
Google logo
Google
Hard
Machine Learning Engineer

Can you reach target with distance-threshold edges?

You are given a set of unordered 2D points points[], a start point and an end point (both are included in points), and a function: `text getDistance(p...

Coding & AlgorithmsGraphs
19
2
290 people solved
Feb 22, 2026
Shopify logo
Shopify
Medium
Software Engineer Locked

Parse a CSV and Generate a Gift Exchange

Parse escaped CSV participant data and generate a one-to-one gift exchange in which nobody is assigned to themselves. Cover malformed rows, duplicate ...

Software Engineering FundamentalsParsing & InterpretersData Cleaning & Wrangling
10
0
140 people solved
Jul 8, 2026
Runloop logo
Runloop
Medium
Software Engineer

Design a Minesweeper Bot That Decides Which Cell to Flag or Reveal Next

Design a bot that plays Minesweeper. The bot's goal is to win as often as possible, which means clearing the board without ever revealing a mine. The ...

Software Engineering FundamentalsBacktracking & RecursionProbability
0
0
8 people solved
Jul 11, 2026
Snowflake logo
Snowflake
Medium
Software Engineer

Height of an N-ary Tree After Deleting Nodes and Promoting Their Children

You are given a rooted N-ary tree and a set of nodes to delete. Deleting a node removes it from the tree, and its children are attached to its parent ...

Coding & AlgorithmsTrees
2
0
31 people solved
Apr 28, 2026
Rippling logo
Rippling
Easy
Software EngineerIntern

Clarify and Find Common Ancestors in a Graph

Explain how you would find common ancestors in a graph. Begin by clarifying the edge direction, graph structure, queried vertices, and whether the res...

Software Engineering FundamentalsGraphs
9
0
92 people solved
Dec 12, 2025
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