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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
1.5k
Companies
980
Updated
11.12.2026
1.5k 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
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
Google logo
GoogleMetaAmazon

Also asked at Amazon, Infosys, Microsoft, Deutsche Bank, Bloomberg, Apple, LinkedIn, NVIDIA, Zopsmart, IBM, Oracle, TikTok, TCS, EPAM Systems

Medium
Software Engineer

Reverse Word Order and Normalize ASCII Spaces

Problem Reverse the order of words in a string. A word is a maximal sequence of non-space characters. Return the words unchanged internally, joined by...

Coding & AlgorithmsArrays & Strings
2
1
25 people solved
Waymo logo
Waymo
Medium
Software Engineer Locked

Count Squares Formed by Intersections of Vertical and Horizontal Segments

Given vertical and horizontal line segments defined by start and end points, count the axis-aligned squares whose four corners are all segment interse...

Coding & AlgorithmsMath & Number Theory
16
0
116 people solved
Sep 10, 2026
LinkedIn logo
LinkedIn
Medium
Software Engineer Locked

Find Users with at Least One Session Within a Duration Limit

Process chronological sign-in and sign-out logs to find users with any completed session at or below a maximum duration.

Coding & AlgorithmsArrays & Strings
41
1
535 people solved
Sep 17, 2026
Google logo
GoogleAmazonMicrosoft

Also asked at Microsoft, Bloomberg, TCS, Meta, Accenture, Visa, Capital One, Flipkart, Uber, DoorDash, TikTok, Goldman Sachs, Coupang, Walmart Labs, Infosys

Hard
Software Engineer

Find the Largest Rectangle Under Histogram Bars

Problem The array bars gives the heights of adjacent histogram bars, each of width one. Return the greatest area of a rectangle that fits inside this ...

Coding & AlgorithmsStacks & Queues
3
0
23 people solved
Visa logo
Visa
Medium
Software EngineerSenior+

Count Space-Separated Words Made Only of Letters and Basic Punctuation

Count the words in a sentence under a strict definition of a word. Split the sentence on spaces into tokens, discard every token that contains a digit...

Coding & AlgorithmsArrays & Strings
7
0
75 people solved
Oct 2, 2026
Google logo
Google
Medium
Software Engineer

Earliest Time a Friendship Log Connects Everyone, With Hop Limit and Unfriends

You are given a list of friendship log entries and the total number of users n. Each entry has the form `text timestamp, userA connects to userB ` mea...

Software Engineering FundamentalsGraphs
8
0
99 people solved
Sep 16, 2026
Cresta logo
Cresta
Medium
Software Engineer

Longest Overlap Between the End of One String and the Start of Another

Given two strings a and b, find the longest stretch at the end of a that is also the beginning of b. Return its length: the largest k such that the la...

Coding & AlgorithmsString Algorithms
8
0
56 people solved
Oct 6, 2026
Harvey logo
Harvey
Hard
Software Engineer Locked

Build an In-Memory File Vault with Duplicate-Name Handling

Build an in-memory file vault that creates missing directories and resolves duplicate names with the smallest available numeric suffix. Support file a...

Coding & AlgorithmsLow-Level Design (OOP)Trees
39
1
492 people solved
Aug 8, 2026
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
Apple logo
Apple
Medium
Software Engineer Locked

Merge Two Strings Using the Longest Edge Overlap

Compare both suffix-to-prefix concatenation orders, merge the longest edge overlap, and favor the original string order when overlap lengths tie.

Coding & AlgorithmsString Algorithms
13
0
195 people solved
Sep 10, 2026
Citadel logo
Citadel
Easy
Software EngineerIntern Locked

Read and Write Files with Shared Content

Process in-memory file writes and reads while sharing identical retained content across paths and preserving exact, case-sensitive data retrieval.

Coding & AlgorithmsData Structure DesignFile & Media Storage
28
2
376 people solved
Sep 3, 2026
Goldman Sachs logo
Goldman Sachs
Medium
Software Engineer

Highest Average Student Score: Out-of-Memory Input, Overflow and Thread Safety in Java

Given a list of exam results, each a pair of a student's name and an integer score, return the highest average score of any student, rounded down to a...

Software Engineering FundamentalsConcurrencyArrays & Strings
3
0
32 people solved
Oct 5, 2026
Palantir logo
Palantir
Medium
Software EngineerIntern Locked

Stack Item and Category Coupons with an Eighty-Percent Cap

Apply multiplicative item and category discounts, cap unrounded savings at eighty percent, and round each final item discount once.

Coding & AlgorithmsMath & Number TheoryArrays & Strings
18
0
147 people solved
Aug 27, 2026
Google logo
GoogleAmazonInfosys

Also asked at Infosys, Microsoft, Bloomberg, Meta, Accenture, TCS, Oracle, Qualcomm, Goldman Sachs, Deshaw, Cognizant, IBM, Adobe, Morgan Stanley, Autodesk

Easy
Software Engineer

Recover a Guaranteed More-Than-Half Majority

Problem Return the value occurring more than floor(n/2) times in a nonempty integer array. The input is guaranteed to contain such a majority value. `...

Coding & AlgorithmsArrays & Strings
3
0
20 people solved
Rippling logo
Rippling
Medium
Backend EngineerSenior+ Locked

Process a Task List: Deduplicate, Drop Completed, Sort by Priority, and Nest Subtasks

Senior backend coding question: process a batch of scheduler tasks by removing duplicates on description and due date, dropping completed tasks, sorti...

Software Engineering FundamentalsSortingAI-Assisted Development
28
0
207 people solved
Sep 11, 2026
Meta logo
Meta
Easy
Software Engineer

Check Whether a Letters-and-Numbers Abbreviation Matches a Word

A word can be abbreviated by replacing some of its non-empty substrings with their lengths, written in decimal. For example, "abbreviation" can be wri...

Coding & AlgorithmsTwo Pointers & Sliding Window
15
0
141 people solved
Sep 21, 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
Elevenlabs logo
Elevenlabs
Medium
Software Engineer

Fewest Stones Left After Merging Equal-Level Pairs

You are carrying a collection of stones, and each stone has a level, which is a positive integer. Two stones with the same level x can be merged into ...

Coding & AlgorithmsArrays & StringsBit Manipulation
9
0
68 people solved
Sep 1, 2026
Apple logo
AppleMongoDBGoogle

Also asked at Google, Microsoft, TikTok, Amazon, Databricks, DeepMind, Snowflake, Rubrik, Verkada, Coupang, SpaceXAI, Meta

Medium
Software Engineer

Array Values at Saved Snapshot Versions

Problem Implement the native SnapshotArray class. Construction creates length zeros. set(index,val) changes the current value. snap() saves the curren...

Coding & AlgorithmsData Structure DesignBinary Search
3
0
31 people solved
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