Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions

476

Companies

980

Updated

11.10.2026

476 Questions 980 Companies11.10.2026

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_

"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"

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

"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."

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

"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."

CarlosFull Stack, Shopify

"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."

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."

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

"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."

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

"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."

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

"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."

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

_The_TaNk_

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

"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."

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

CarlosFull Stack, Shopify

"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."

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."

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

"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."

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

"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."

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

"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."

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

Medium

Software Engineer Locked

Design Blackjack Hands, Splits, and a Multi-Deck Shoe

Design the core object model for a blackjack game. Make the API or object boundaries explicit, then cover invariants, edge cases, testing strategy, an...

Software Engineering FundamentalsLow-Level Design (OOP)Simulation & State Machines

Implement 2048 Game Logic

Implement the core movement logic for the 2048 game. You are given an n x n integer board where 0 represents an empty cell and every nonzero value rep...

Coding & AlgorithmsSimulation & State Machines

2048 Game: Slide and Merge Tiles on a 4x4 Board in Any of Four Directions

In the sliding-tile game 2048, a fixed 4 x 4 board holds numbered tiles. A move pushes the board in one of four directions: every tile slides as far a...

Coding & AlgorithmsSimulation & State MachinesArrays & Strings

Implement Kac ring with O(1) color and kstep

You are implementing a Kac ring dynamical system. Model - There are N positions arranged in a circle, indexed clockwise: 0, 1, ..., N-1. - Each positi...

Coding & AlgorithmsData Structure DesignMath & Number Theory

Implement a Vending Machine

Design and implement the core logic for a vending machine using object-oriented principles. The machine stores products, accepts bills, tracks the cur...

Software Engineering FundamentalsLow-Level Design (OOP)Simulation & State Machines

Compute dasher pay from order events

Dasher naive pay (active-time with overlapping orders) You are given a list of events describing when a delivery driver ("Dasher") accepts and fulfill...

Coding & AlgorithmsSimulation & State MachinesSorting

239 people solved

Mar 1, 2026

Design and Evaluate a Solver for a 36-Card Sum-Fifteen Game

Clarify a 36-card triple-sum game, compare legal search and heuristic strategies, and evaluate reproducible win rates and runtime across many games.

Software Engineering FundamentalsBacktracking & RecursionSimulation & State Machines

Software Engineer Locked

Implement a Concurrent Payment Queue with Visibility Timeouts

Implement an in-memory payment queue with atomic receives, visibility timeouts, ACK races, stale-callback protection, and idempotent payment processin...

Software Engineering FundamentalsConcurrencyData Structure Design

Compress editor keystrokes into insert/delete/skip

You are implementing a simplified collaborative editor sync format. You are given: - An initial document string doc. - A list of user input operations...

Coding & AlgorithmsArrays & StringsSimulation & State Machines

Insert the Fewest Letters to Form Repeated abc Blocks

Problem Insert any number of letters a, b, or c anywhere in word without deleting or reordering its existing characters. Return the minimum insertions...

Coding & AlgorithmsGreedyArrays & Strings

Detect Trigger and Resolve Events

You are given transaction logs sorted by non-decreasing timestamp. Each log record has four fields: - timestamp: integer time in seconds - merchant_id...

Coding & AlgorithmsTwo Pointers & Sliding WindowSimulation & State Machines

Debug and Improve a Load Balancer

Debug and Improve a Load Balancer Clarifying Questions to Ask - Is the load balancer a single process exercise or a distributed production service? - ...

Software Engineering FundamentalsDebuggingFault Tolerance & Failover

Count Equal-Colored Neighbors After Each Recoloring

Count Equal-Colored Neighbors After Each Recoloring An array colors has length n and initially contains only zeros. Zero means that a position is unco...

Coding & AlgorithmsSimulation & State MachinesArrays & Strings

16 people solved

Affirm

Easy

Software Engineer Locked

Compute Available Offers per User

This question evaluates event-stream processing, stateful per-user counting, and time-window filtering competencies, requiring correctness with ordere...

Coding & AlgorithmsSimulation & State MachinesArrays & Strings

Choose Alice's Most Profitable Root-to-Leaf Route against Bob

Problem The undirected tree edges is rooted at node 0. Alice starts at 0 and moves one edge per second along a route to a leaf. Bob starts at bob and ...

Coding & AlgorithmsTreesDynamic Programming

Rotate a Stone Box and Settle Its Contents

Problem boxGrid contains stones #, fixed obstacles *, and empty cells .. Rotate this rectangular box ninety degrees clockwise, then let stones fall do...

Coding & AlgorithmsSimulation & State MachinesGrids & Matrices

16 people solved

NVIDIA

Easy

Software Engineer Locked

Compute the Final Robot Score

This question evaluates data structure and algorithm proficiency, focusing on managing dynamic multisets with priority-based selection and reasoning a...

Coding & AlgorithmsHeaps & Priority Queues

Find minimum operations to make array sorted

Problem You are given an integer array a of length n. Define one operation as follows: 1. Remove the first element x = a[0]. 2. Append x to the end of...

Coding & AlgorithmsSimulation & State Machines

Find shortest path on infinite grid

You are given an infinite 2D grid with integer coordinates. From a cell (x, y) you may move in 4 directions (North/South/East/West) by 1 cell per move...

Coding & AlgorithmsGraphs

579 people solved

Mar 11, 2026

Implement four coding challenges

You are asked to solve the following four independent coding problems. --- 1) Block Placement Simulator (Tetris-like) You have an empty n x m grid (ro...

Coding & AlgorithmsSimulation & State MachinesArrays & Strings

147 people solved

Feb 8, 2026

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Tech Interview Questions

Design Blackjack Hands, Splits, and a Multi-Deck Shoe

Implement 2048 Game Logic

2048 Game: Slide and Merge Tiles on a 4x4 Board in Any of Four Directions

Implement Kac ring with O(1) color and kstep

Implement a Vending Machine

Compute dasher pay from order events

Design and Evaluate a Solver for a 36-Card Sum-Fifteen Game

Implement a Concurrent Payment Queue with Visibility Timeouts

Compress editor keystrokes into insert/delete/skip

Insert the Fewest Letters to Form Repeated abc Blocks

Detect Trigger and Resolve Events

Debug and Improve a Load Balancer

Count Equal-Colored Neighbors After Each Recoloring

Compute Available Offers per User

Choose Alice's Most Profitable Root-to-Leaf Route against Bob

Rotate a Stone Box and Settle Its Contents

Compute the Final Robot Score

Find minimum operations to make array sorted

Find shortest path on infinite grid

Implement four coding challenges

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