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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
Waymo logo
Waymo
Medium
Software Engineer Locked

Implement an ObjectTracker That Merges Observations From Two Perception Systems

Two perception systems track the same objects under different IDs. Implement an ObjectTracker with addLink, addObservation and getHistory that returns...

Software Engineering FundamentalsData Structure DesignGraphs
4
0
66 people solved
Sep 10, 2026
Amazon logo
AmazonGoogleMeta

Also asked at Meta, Microsoft, Bloomberg, Amagi, Visa, Zoho, TikTok, LinkedIn, IBM, Uber, Nike, Nykaa, Infosys, Oracle, Deshaw

Hard
Software Engineer

Longest Balanced Parentheses Substring

Problem You receive a string brackets whose characters are all ( or ). Return the greatest length of a contiguous substring that forms a well-formed p...

Coding & AlgorithmsStacks & QueuesArrays & Strings
3
0
25 people solved
Virtu Financial logo
Virtu Financial
Hard
Quantitative Researcher

Maximum Total Height of Mountain-Shaped Towers Under Per-Plot Height Caps

You are planning n towers on plots 0 to n - 1 along a street. Each plot has a height cap: tower i must have an integer height heights[i] with 1 <= hei...

Coding & AlgorithmsGreedy
4
0
39 people solved
Sep 16, 2026
Citadel Securities logo
Citadel Securities
Medium
Software Engineer

Conflating Quote Queue That Keeps Only the Latest Price per Symbol

A market data feed pushes quotes for stock symbols; each quote carries a symbol and that symbol's latest ask price as an integer. Quotes can arrive fa...

Software Engineering FundamentalsData Structure DesignProgramming Languages
9
0
87 people solved
Sep 11, 2026
Tesla logo
TeslaBloombergGoogle

Also asked at Google, Adobe, Amazon, Meta, Microsoft

Hard
Software EngineerSenior+ Locked

Flatten a Linked List with Nested Side Branches into One Doubly Linked List

A linked list whose nodes may each carry one side branch, with branches nested like a binary tree, must be flattened into a single doubly linked list ...

Coding & AlgorithmsLinked Lists
10
0
82 people solved
Anthropic logo
Anthropic
Medium
Software Engineer Locked

Convert Sampled Call Stacks into Timestamped Function Start and End Events

Convert a sampling profiler's timestamped call stacks into function start and end events for a trace viewer, explain why ends are emitted innermost fi...

Software Engineering FundamentalsStacks & QueuesArrays & Strings
17
0
124 people solved
Sep 18, 2026
Kikoff logo
Kikoff
Medium
Android EngineerSenior+

Expand Nested Substitutions and Detect Reachable Cycles

A template contains references to replacement strings. First explain one-level substitution. Then support replacement strings that themselves contain ...

Coding & AlgorithmsParsing & InterpretersBacktracking & Recursion
0
0
8 people solved
Oct 21, 2026
DocuSign logo
DocuSign
Medium
Software EngineerSenior+

Collapse runs of adjacent anagrams in a word list

You are given a list of lowercase words. Two words are anagrams of each other when one can be turned into the other by rearranging its letters, using ...

Coding & AlgorithmsArrays & Strings
11
0
80 people solved
Oct 2, 2026
Oracle logo
Oracle
Medium
Software Engineer

Sum the Binary Numbers Spelled by Root-to-Leaf Paths in a 0/1 Tree

You are given a binary tree in which every node holds the bit 0 or 1. Each path from the root down to a leaf spells a binary number, read with the roo...

Coding & AlgorithmsTrees
8
0
56 people solved
Oct 7, 2026
Rippling logo
RipplingGoogleAmazon

Also asked at Amazon, Meta, Bloomberg, Microsoft, TCS

Easy
Software Engineer

Measure the Deepest Parenthesis Nest

Problem The parentheses in s are balanced. Other characters are digits or arithmetic operator symbols. Return the largest number of simultaneously ope...

Coding & AlgorithmsStacks & Queues
3
0
35 people solved
Verisk logo
Verisk
Easy
Data ScientistIntern

What Determines Evaluation Order in a Prefix (Polish Notation) Expression?

An online assessment includes this multiple-choice question. Which of the following factors determine the order of evaluation of a prefix expression? ...

Software Engineering FundamentalsParsing & Interpreters
0
0
3 people solved
Nov 12, 2026
LinkedIn logo
LinkedInGoogleMeta
Easy
Software Engineer Locked

Inverse-Depth Weighted Sum of a Nested Integer List

Compute a weighted sum over a nested list of integers given in bracket notation, where integers closer to the top level weigh more and the deepest one...

Coding & AlgorithmsParsing & Interpreters
6
1
108 people solved
Chime logo
ChimeGoogleAmazon

Also asked at Amazon, Bloomberg, Apple, Microsoft, Goldman Sachs, Uber, Snowflake, Rokt

Medium
Software Engineer

Single-Tab Browser Navigation History

Problem Implement BrowserHistory with the native constructor and methods. Begin at homepage. visit(url) goes to a new page and clears every forward-hi...

Coding & AlgorithmsData Structure DesignStacks & Queues
1
0
27 people solved
Glean logo
Glean
Medium
Software EngineerNew Grad

Evaluate an Integer Expression with + - * / and No Parentheses

Implement a basic calculator for expressions without parentheses. The source describes it only as "the basic version, without parentheses". This versi...

Coding & AlgorithmsParsing & InterpretersStacks & Queues
4
0
56 people solved
Sep 30, 2026
Waymo logo
Waymo
Medium
Software Engineer Locked

2D Max Pooling That Also Returns the Coordinates of Each Window Maximum

Implement 2D max pooling with a k-by-k window and a stride, and for each window also return the row and column of its maximum, breaking ties by smalle...

Coding & AlgorithmsGrids & Matrices
4
0
86 people solved
Sep 10, 2026
Jane Street logo
Jane Street
Medium
Software Engineer Locked

Implement a Circular Buffer

This question evaluates understanding of data structures and buffer management, specifically FIFO semantics, fixed-capacity storage, wraparound indexi...

Coding & AlgorithmsData Structure Design
59
1
767 people solved
May 20, 2026
SIG (Susquehanna) logo
SIG (Susquehanna)
Easy
Software Engineer Locked

Design a Cash Register with Inventory and Profit Tracking

Design an object-oriented cash register that tracks inventory lots, commits multi-product sales, and reports realized gross profit. The interview prob...

Software Engineering FundamentalsLow-Level Design (OOP)Concurrency
28
0
319 people solved
Aug 3, 2026
Two Sigma logo
Two Sigma
Medium
Software EngineerNew Grad Locked

Allocate IPO Shares and Split a Weighted Tree

Solve two independent coding tasks: distribute limited IPO shares under price and round-robin rules, then choose a cut that best divides a weighted ro...

Coding & AlgorithmsTreesSimulation & State Machines
21
0
287 people solved
Jun 28, 2026
Figma logo
Figma
Medium
Software Engineer Locked

Convert Leveled Rich-Text Tokens into Nested Lists

Convert ordered rich-text tokens with positive depth levels into the specified nested-list representation while preserving text order. The exercise pr...

Coding & AlgorithmsStacks & Queues
73
2
529 people solved
Jul 21, 2026
Merge logo
Merge
Medium
Software Engineer

Org Chart from a Reporting List: Count Orgs, Print by Level, Find a Common Manager

A company's employees are given as a list of tuples (id, title, reports_to), where reports_to is the id of the employee's direct manager. The head of ...

Software Engineering FundamentalsTrees
1
0
17 people solved
Oct 2, 2026
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