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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
Amazon logo
AmazonTeslaStackAdapt

Also asked at StackAdapt, Google, Uber, TikTok, Zeta Global

Medium
Software Engineer

Recipes That Can Be Made from Unlimited Supplies

Problem You are given recipe names, the ingredients needed for each recipe and the names initially available as supplies. Supplies are unlimited. A re...

Coding & AlgorithmsGraphs
1
0
15 people solved
Decagon logo
Decagon
Medium
Software Engineer Locked

Implement CSAT tracking and call timing

This question evaluates skills in designing efficient streaming/rolling-window data structures and stateful updates for real-time metrics, alongside p...

Coding & AlgorithmsData Structure DesignStacks & Queues
27
0
288 people solved
Jan 11, 2026
Rippling logo
Rippling
Medium
Software Engineer

Ride Sharing with Ordered Matching and Cancellation

Problem Implement RideSharingSystem, which tracks waiting riders and available drivers in their respective arrival order. - RideSharingSystem() starts...

Coding & AlgorithmsData Structure DesignStacks & Queues
1
0
14 people solved
Cubist logo
Cubist
Medium
Software Engineer

Rebuild a binary search tree from its postorder traversal in linear time

You are given the postorder traversal of a binary search tree (BST) whose values are all distinct. Rebuild the tree and return its preorder traversal....

Coding & AlgorithmsTrees
2
0
30 people solved
Aug 17, 2026
Upstart logo
Upstart
Medium
Software Engineer

Compute buffet revenue with capacity and waiting

A casino buffet has a maximum capacity capacity (number of customers that can be seated at once). You are given: 1) prices: an array where prices[i] i...

Coding & AlgorithmsSimulation & State MachinesStacks & Queues
12
0
162 people solved
Mar 9, 2026
Snowflake logo
Snowflake
Medium
Software Engineer

Find Shortest Wiki Click Path

Implement a function that computes the minimum number of clicks needed to navigate from one wiki page to another. You are given two page URIs, start_u...

Coding & AlgorithmsGraphsStacks & Queues
11
0
116 people solved
Apr 7, 2026
Apple logo
Apple
Medium
Software Engineer

Solve 15 common interview problems

Below are fifteen independent coding problems commonly discussed in software engineering interviews. For each one, write an efficient algorithm and be...

Coding & AlgorithmsArrays & StringsGraphs
22
1
218 people solved
Jan 27, 2026
Amazon logo
AmazonGoogleDoorDash

Also asked at DoorDash, Meta, Bloomberg, Goldman Sachs, Sprinklr

Medium
Software Engineer

Detect a Strict 132 Pattern

Detect a Strict 132 Pattern Given an integer array nums, determine whether it contains three indices i < j < k such that: `text nums[i] < nums[k] < nu...

Coding & AlgorithmsStacks & QueuesArrays & Strings
0
0
6 people solved
Decagon logo
Decagon
Medium
Software Engineer Locked

Design Sliding-Window Average Tracker

This question evaluates design and implementation of a time-windowed tracking data structure, focusing on streaming aggregation, handling monotonic ti...

Coding & AlgorithmsData Structure DesignStacks & Queues
24
0
269 people solved
Jan 31, 2026
Snowflake logo
Snowflake
Medium
Software Engineer Locked

Traverse All Reachable Pages With Parallel BFS

Return every web page reachable from a starting page in stable breadth-first discovery order, including the start exactly once. Handle cycles, duplica...

Coding & AlgorithmsGraphsStacks & Queues
19
0
178 people solved
Jul 11, 2026
Remitly logo
Remitly
Medium
Software Engineer

Design an Elevator System and Scheduler

Design an object-oriented elevator system. Define core classes and interfaces (elevator, controller, request, floor, buttons, sensors) and their inter...

Coding & AlgorithmsLow-Level Design (OOP)Stacks & Queues
51
0
359 people solved
Aug 13, 2025
Amazon logo
Amazon
Hard
Software Engineer

Test Whether a Right-and-Down Grid Path Forms Balanced Parentheses

Problem Choose a path from the upper-left to the bottom-right cell of grid, moving only right or down. Read every visited parenthesis, including both ...

Coding & AlgorithmsDynamic ProgrammingGrids & Matrices
0
0
8 people solved
Anthropic logo
Anthropic
Hard
Software Engineer Locked

Design stack with O(1) minimum query

This question evaluates understanding of stack-based data structures, constant-time operation constraints, and handling edge cases such as empty queri...

Coding & AlgorithmsData Structure DesignStacks & Queues
67
0
507 people solved
Feb 1, 2026
Databricks logo
Databricks
Medium
Software Engineer Locked

Compute 5-minute rolling average load

This question evaluates understanding of sliding-window aggregation and efficient data-structure design for time-series event streams, focusing on com...

Coding & AlgorithmsData Structure DesignTwo Pointers & Sliding Window
14
0
251 people solved
Feb 3, 2026
Meta logo
Meta
Medium
Backend Engineer AI Locked

Solve coding and AI-assisted tasks

This set evaluates algorithmic problem-solving across arrays, immutable linked-list interfaces, parent-pointer tree traversal, string validity via min...

Coding & AlgorithmsGrids & MatricesLinked Lists
22
0
168 people solved
Apr 8, 2026
Figma logo
Figma
Medium
Software Engineer

Design document layer with undo/redo

Design a document layer that supports applying edits and undo/redo. Implement apply(op) to mutate the document, undo() to revert the most recent commi...

Coding & AlgorithmsData Structure Design
53
0
734 people solved
Sep 6, 2025
Jump Trading logo
Jump Trading
Easy
Software Engineer Locked

Design Stack Evaluators and Low-Latency Memory Primitives

Practice systems-programming design across an RPN evaluator with macros, a lock-free SPSC queue, false sharing, and a cross-thread pool allocator. Exp...

Software Engineering FundamentalsStacks & QueuesConcurrency
18
0
135 people solved
Jun 14, 2026
Voleon logo
Voleon
Medium
Software Engineer

Validate whether a binary string is good

You are given a binary string s consisting only of characters '0' and '1'. Define a good string recursively by the grammar: - '0' is a good string. - ...

Coding & AlgorithmsStacks & Queues
71
0
547 people solved
Dec 9, 2025
TikTok logo
TikTok
Medium
Software Engineer

Delete nodes in linked list and binary tree

You are asked to solve two short coding tasks. You may assume standard node definitions: - Singly linked list node: val, next - Binary tree node: val,...

Coding & AlgorithmsLinked ListsTrees
6
0
129 people solved
Feb 11, 2026
Google logo
GoogleMetaAmazonMicrosoft

Also asked at Amazon, Microsoft

Medium
Software Engineer

Earliest Tree Level With the Largest Sum

Problem The root is at level 1 and each child is one level below its parent. Return the smallest level number whose node values have the maximum sum a...

Coding & AlgorithmsTreesStacks & Queues
0
0
8 people solved
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