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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
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
Amazon logo
AmazonMetaBloomberg

Also asked at Bloomberg, Google, Microsoft

Easy
Software Engineer

Count Students Left When Lunch Service Stops

Problem Students queue with preferences 0 or 1. sandwiches lists a stack from top to bottom, using the same two types. A front student takes a matchin...

Coding & AlgorithmsSimulation & State MachinesStacks & Queues
0
0
9 people solved
Meta logo
Meta
Medium
Data Engineer

Solve SQL and Python coding tasks

You are given a small library system with the following relational schema and several Python data-processing tasks. Answer the SQL questions and imple...

Coding & AlgorithmsSQLDynamic Programming
82
6
553 people solved
Nov 20, 2025
Google logo
Google
Hard
Software EngineerNew Grad Locked

Compute Turnstile Crossing Times

This question evaluates proficiency in queue simulation, event-driven scheduling, and handling priority and tie-breaking rules while achieving linear ...

Coding & AlgorithmsSimulation & State MachinesStacks & Queues
12
1
128 people solved
May 4, 2026
Amazon logo
AmazonUberTomTomMicrosoft

Also asked at TomTom, Microsoft

Medium
Software Engineer

First Value Appearing Exactly Once in an Append-Only Queue

Problem Implement the native FirstUnique class. The constructor initializes the queue with nums. add appends one value. showFirstUnique returns the ea...

Coding & AlgorithmsData Structure DesignStacks & Queues
0
0
8 people solved
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
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
Google logo
GoogleDeshawCisco

Also asked at Cisco, Amazon, TikTok, Databricks, Meta, Pinterest, Adobe, Bloomberg, Uber, Snapchat, AppFolio

Hard
Software Engineer

Shortest Four-Direction Route With an Obstacle Budget

Problem In the binary grid, 0 is empty and 1 is an obstacle. Starting at the empty top-left cell, move up,down,left or right one cell per step. You ma...

Coding & AlgorithmsGrids & MatricesGraphs
0
0
8 people solved
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
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
Google logo
GoogleAmazonBloombergMicrosoft

Also asked at Bloomberg, Microsoft

Medium
Software Engineer

Arrange a Deck for Increasing Reveal-and-Rotate Order

Problem Reorder the unique card values in deck so this procedure reveals them in increasing order: remove and reveal the top card, then move the next ...

Coding & AlgorithmsSimulation & State MachinesStacks & Queues
0
0
10 people solved
Amazon logo
Amazon
Hard
Software Engineer Locked

Return the Maximum of Every Sliding Window

Given an integer array and window size k, return the maximum value from every contiguous window in left-to-right order.

Coding & AlgorithmsStacks & Queues
32
0
279 people solved
Aug 11, 2026
Coreweave logo
Coreweave
Medium
Software Engineer Locked

Design Tree Operations with DFS and BFS

This Coreweave software engineering question evaluates tree operations using DFS and BFS. It prepares candidates to compare traversal strategies, reas...

Software Engineering FundamentalsLow-Level Design (OOP)Trees
22
0
240 people solved
Jul 2, 2026
Robinhood logo
Robinhood
Easy
iOS Engineer

Sequential Swift Order Sender with FIFO Ordering and a Three-Send Retry Limit

In an iOS coding round you receive the Swift file below. NetworkManager.sendOrder simulates sending an order to the backend: it prints the order it is...

Software Engineering FundamentalsiOSConcurrency
0
0
7 people solved
Jul 17, 2026
Bloomberg logo
Bloomberg
Medium
Software Engineer

Implement sliding-window timestamped average

Problem Implement a class that maintains a time-based sliding window of records and can return the average score within the current window. Requiremen...

Coding & AlgorithmsData Structure DesignStacks & Queues
14
0
195 people solved
Feb 12, 2026
Amazon logo
AmazonGoogleMeta

Also asked at Meta, Microsoft, Deshaw, Bloomberg, Chubb

Medium
Software Engineer

Sum Every Subarray's Maximum-Minus-Minimum

Problem For each nonempty contiguous subarray of nums, its range is the largest value minus the smallest value in that subarray. Return the sum of the...

Coding & AlgorithmsStacks & QueuesArrays & Strings
1
0
11 people solved
LinkedIn logo
LinkedIn
Medium
Data EngineerSenior+

Implement a stack supporting max and popMax

Design a data structure that behaves like a stack but also supports retrieving and removing the current maximum value. Implement a class MaxStack with...

Coding & AlgorithmsData Structure DesignStacks & Queues
13
0
118 people solved
Feb 2, 2026
Amazon logo
AmazonMicrosoftBloomberg

Also asked at Bloomberg, Google, Meta

Easy
Software Engineer

Remove One Outer Pair from Every Primitive Parentheses Component

Problem A valid parentheses string is empty, a matching pair around a valid string, or a concatenation of valid strings. A nonempty valid string is pr...

Coding & AlgorithmsStacks & Queues
0
0
6 people solved
LinkedIn logo
LinkedIn
Medium
Machine Learning Engineer Locked

Implement alert queries and spike detection

This question evaluates a candidate's skills in streaming data structures, time-windowed aggregation, in-memory analytics for high-throughput alert in...

Coding & AlgorithmsReal-Time SystemsStacks & Queues
11
0
141 people solved
Feb 11, 2026
EvenUp logo
EvenUp
Medium
Software Engineer

Simulate a two-player card war game

Simulate a two-player card war game Implement a function to simulate a two-player card game. Each player has a queue of card ranks (top at index 0), w...

Coding & AlgorithmsSimulation & State Machines
42
1
347 people solved
Aug 10, 2025
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