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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
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
Datadog logo
Datadog
Hard
Software Engineer

Implement Prefix Match Filter

Design a data structure that stores a collection of prefix strings. Then, given a list of input strings, return every string that begins with at least...

Coding & AlgorithmsData Structure DesignString Algorithms
32
0
251 people solved
Feb 25, 2026
Databricks logo
Databricks
Medium
Software Engineer

Find first CIDR block covering IP

You are given: - A single IPv4 address as a string, e.g. "192.168.1.5". - A list of CIDR blocks (IPv4), each as a string in the form "a.b.c.d/x", wher...

Coding & AlgorithmsNetworkingBit Manipulation
23
0
180 people solved
Dec 8, 2025
Netflix logo
Netflix
Medium
Software Engineer Locked

Solve sliding-window and disjoint-string-pairs tasks

This question evaluates proficiency in string-processing algorithms, sliding-window techniques, efficient set or bitmask representations, and combinat...

Coding & AlgorithmsTwo Pointers & Sliding WindowBit Manipulation
34
0
324 people solved
Mar 1, 2026
Google logo
GoogleAmazon
Easy
Software Engineer

Sum Squared Distinct Counts Across All Subarrays

Sum Squared Distinct Counts Across All Subarrays You are given a 0-indexed integer array nums. For a nonempty contiguous subarray nums[i..j], where 0 ...

Coding & AlgorithmsArrays & Strings
0
0
8 people solved
Visa logo
VisaInfosysMicrosoftPoint72

Also asked at Microsoft, Point72

Medium
Software Engineer

Maximize the Bitwise OR Within a Doubling Budget

Maximize the Bitwise OR Within a Doubling Budget You are given a zero-indexed array nums of positive integers and an integer k. One operation chooses ...

Coding & AlgorithmsBit ManipulationGreedy
1
0
13 people solved
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
Amazon logo
AmazonBloombergGoogle

Also asked at Google, Meta, Microsoft

Easy
Software Engineer

Return the Multiset of Characters Present in Every Word

Problem Return an array of one-character strings for all characters common to every word in words, including repeated occurrences. A character appears...

Coding & AlgorithmsArrays & Strings
1
0
12 people solved
Google logo
GoogleWixMicrosoft

Also asked at Microsoft, Amazon, Siemens

Hard
Software Engineer

Find the Fewest Edits Needed to Strengthen a Password

Find the Fewest Edits Needed to Strengthen a Password A password is strong only when all three conditions hold: - Its length is from 6 through 20, inc...

Coding & AlgorithmsGreedyArrays & Strings
0
0
8 people solved
Goldman Sachs logo
Goldman SachsUberThoughtSpot

Also asked at ThoughtSpot, WeRide, Google

Hard
Software Engineer

Count Tree Paths Whose Edge Letters Can Form a Palindrome

Count Tree Paths Whose Edge Letters Can Form a Palindrome You are given a connected, undirected tree with no cycles, rooted at node 0. Its n nodes are...

Coding & AlgorithmsTreesBit Manipulation
0
0
7 people solved
LinkedIn logo
LinkedIn
Easy
Software EngineerSenior+ Locked

Design O(1) Randomized Multiset

This question evaluates data-structure design skills, understanding of hashing and randomization for uniform sampling, handling of duplicate elements,...

Coding & AlgorithmsData Structure DesignArrays & Strings
17
0
165 people solved
Apr 6, 2026
Google logo
Google
Easy
Software Engineer

Find largest group of two-digit numbers sharing digits

You are given an integer array A of length n (1 <= n <= 100). Each element is a two-digit number (e.g., from 10 to 99). Two numbers are considered con...

Coding & AlgorithmsGraphs
33
0
281 people solved
Dec 5, 2025
Sigmacomputing logo
Sigmacomputing
Medium
Software Engineer

Build a pivot table class over shirt sales records with running and grand totals

You are given shirt sales records as a list of Python dictionaries. Each record has a store ID, a date, a color, a size and the number of shirts sold:...

Software Engineering FundamentalsLow-Level Design (OOP)Arrays & Strings
1
0
24 people solved
Jul 29, 2026
Google logo
GoogleAmazonAT&T

Also asked at AT&T, Microsoft, Meta, Bloomberg

Medium
Software Engineer

Choose a Highest-Sum Distinct Subarray

Problem Erase exactly one nonempty contiguous subarray of the positive array nums. Its values must all be distinct, and its score is their sum. Return...

Coding & AlgorithmsTwo Pointers & Sliding WindowArrays & Strings
1
0
9 people solved
Google logo
GoogleMicrosoftBloombergAmazon

Also asked at Bloomberg, Amazon

Easy
Software Engineer

Duplicate Zeros Within a Fixed Array

Problem Modify arr in place by duplicating each original zero and shifting following elements right. Keep the original array length: discard everythin...

Coding & AlgorithmsArrays & StringsTwo Pointers & Sliding Window
0
0
7 people solved
Google logo
GoogleBloomberg
Easy
Software Engineer

Count Words Using Only Permitted Letters

Problem allowed lists distinct lowercase letters. Count the entries of words whose every character appears in allowed. Repeated letters inside a word ...

Coding & AlgorithmsArrays & Strings
1
0
10 people solved
Coinbase logo
Coinbase
Medium
Software Engineer

Implement a versioned recipe management system

You are asked to implement an in-memory Recipe Management System (similar in difficulty to a simple banking/in-memory DB exercise). The system support...

Coding & AlgorithmsLow-Level Design (OOP)
29
0
343 people solved
Nov 23, 2025
Amazon logo
AmazonGoogleInfosys

Also asked at Infosys, Meta, Goldman Sachs, Microsoft, Bloomberg, Flipkart, Careem, Paytm

Medium
Software Engineer

Check Capacity Along Eastbound Trips

Problem A car drives only east and starts empty with the given capacity. Each trip [passengers,from,to] requires carrying that many people from from t...

Coding & AlgorithmsIntervals & SchedulingArrays & Strings
0
0
7 people solved
Intuit logo
Intuit
Medium
Software Engineer

Sum palindrome-change costs over all substrings

This is a three-part coding screen. Each part is independent — a string-algorithms problem, a SQL aggregation problem, and a shell-parsing problem — a...

Coding & AlgorithmsArrays & StringsSQL
32
0
373 people solved
Oct 13, 2025
Uber logo
UberMicrosoft
Medium
Software Engineer

Values Safe Under Every Search Pivot

Problem The unique integers in nums need not be sorted. A search repeatedly chooses any element of the remaining contiguous sequence as pivot. Equalit...

Coding & AlgorithmsBinary SearchArrays & Strings
1
0
10 people solved
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