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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
Amazon logo
AmazonGoogleMeta

Also asked at Meta, Microsoft, Infosys, Bloomberg, Goldman Sachs, Uber

Medium
Software Engineer

Increase Values to Maximize One Frequency

Problem In one operation, increment an entry of nums by one. Use at most k operations and return the greatest achievable frequency of any value. `cpp ...

Coding & AlgorithmsTwo Pointers & Sliding WindowSorting
0
0
7 people solved
Amazon logo
AmazonPalo Alto NetworksMeta

Also asked at Meta, Uber, ZIP, Microsoft, Goldman Sachs, Google, Bloomberg, Oracle, LinkedIn, eBay

Medium
Software Engineer

Unlock Four Wheels with the Fewest Turns

Problem A four-wheel lock starts at "0000". One move turns one decimal digit forward or backward by one, wrapping between 0 and 9. Any deadends code j...

Coding & AlgorithmsGraphs
1
0
12 people solved
Microsoft logo
MicrosoftGoogleAmazonIntuit

Also asked at Amazon, Intuit

Easy
Software Engineer

Count Delivery Addresses after Local-Name Dot and Plus Rules

Problem For this task's email-address rules, split each string at its single @. In the local part only, discard every dot and ignore the first plus si...

Coding & AlgorithmsArrays & Strings
1
0
11 people solved
Robinhood logo
Robinhood
Medium
Software Engineer

Design a referral leaderboard with chain-based counts

Design and implement a function that generates a referral leaderboard for a platform, given two equal-length arrays rh_users and new_users representin...

Coding & AlgorithmsTrees
51
0
584 people solved
Aug 12, 2025
Amazon logo
AmazonZohoGoogle

Also asked at Google, Meta, Bloomberg, eBay, Microsoft, Couchbase

Easy
Software Engineer

Partition an Array into Even Values Followed by Odd Values

Problem Rearrange every value of nums so all even integers appear before all odd integers. Preserve every occurrence. Any ordering within the even and...

Coding & AlgorithmsArrays & StringsTwo Pointers & Sliding Window
0
0
8 people solved
Google logo
GoogleMicrosoftAmazonMeta

Also asked at Amazon, Meta

Hard
Software Engineer

Longest Proper Prefix That Is Also a Suffix

Problem Return the longest nonempty prefix of s that is also a suffix, excluding s itself. The prefix and suffix occurrences may overlap. Return the e...

Coding & AlgorithmsString Algorithms
0
0
9 people solved
Google logo
Google
Hard
Software Engineer AI Locked

Solve checksum and dependency debugging tasks

This question evaluates skills in string processing, modular arithmetic-based checksum computation and mapping, plus debugging of feature enablement l...

Coding & AlgorithmsGraphsArrays & Strings
32
0
283 people solved
Apr 4, 2026
Harvey logo
Harvey
Hard
Software Engineer Locked

Highlight Overlapping Phrases in a Sentence

Given a sentence such as The quick brown fox jumps over the lazy dog. and phrases such as quick brown and brown fox jumps, design a function that retu...

Software Engineering FundamentalsIntervals & SchedulingArrays & Strings
24
1
199 people solved
Jul 26, 2026
Decagon logo
Decagon
Hard
Software Engineer Locked

Design a Space-Efficient Versioned Recipe Shopping Cart

Design a space-efficient versioned shopping cart that aggregates recipe ingredients, evaluates discounts, records every successful mutation, and can c...

Software Engineering FundamentalsData Structure Design
42
0
467 people solved
Jul 17, 2026
InMobi logo
InMobiAmazonGoogle

Also asked at Google, Meta, TikTok, Microsoft, Bloomberg, Oracle

Medium
Software Engineer

Count Subarrays Containing Exactly k Odd Values

Problem Return the number of nonempty contiguous subarrays of nums containing exactly k odd elements. Even elements may appear anywhere within those i...

Coding & AlgorithmsArrays & StringsTwo Pointers & Sliding Window
1
0
10 people solved
Google logo
GoogleBloombergMicrosoft

Also asked at Microsoft, Amazon, Meta, TCS

Easy
Software Engineer

Find Missing Values in the Range One Through N

Find Missing Values in the Range One Through N An array nums has length n, and every entry lies in [1,n]. Return all values in that range that never o...

Coding & AlgorithmsArrays & Strings
0
0
5 people solved
Voleon logo
Voleon
Medium
Software Engineer

Count queen attacks on points with blockers

You are given positions on an (unbounded) 2D integer grid. - queens: coordinates of queens - points: query coordinates A queen attacks along 8 directi...

Coding & AlgorithmsBinary Search
82
0
607 people solved
Dec 9, 2025
Booking.com logo
Booking.com
Medium
Software Engineer

Match Bookings to Payments

You are given two unsorted lists: - bookings: each record contains at least a unique booking_id - payments: each record contains at least a booking_id...

Coding & AlgorithmsArrays & Strings
15
0
158 people solved
Mar 15, 2026
Affirm logo
Affirm
Medium
Software Engineer Locked

Detect fraud events and extract PII

This question evaluates skills in parsing nested event data, extracting and deduplicating PII fields, and performing key-based correlation to detect r...

Coding & AlgorithmsData Cleaning & Wrangling
23
2
235 people solved
Mar 1, 2026
Capital One logo
Capital OneVisaUber

Also asked at Uber, Roblox, Amazon, Meta, TikTok

Medium
Software Engineer

Count Equal-Colored Neighbors After Each Recoloring

Count Equal-Colored Neighbors After Each Recoloring An array colors has length n and initially contains only zeros. Zero means that a position is unco...

Coding & AlgorithmsSimulation & State MachinesArrays & Strings
1
0
16 people solved
Microsoft logo
MicrosoftArcesiumExpedia
Medium
Software Engineer

Maximize Total Height in a Mountain of Towers

Maximize Total Height in a Mountain of Towers You are given a 0-indexed array maxHeights of n integers. Choose an integer height heights[i] for the to...

Coding & AlgorithmsStacks & QueuesDynamic Programming
0
0
12 people solved
Microsoft logo
Microsoft
Medium
Software Engineer

Most Frequent Substring Within a Length Range and a Distinct-Letter Limit

Given a string s, consider every substring whose length is between min_length and max_length (inclusive) and that contains at most max_unique distinct...

Coding & AlgorithmsTwo Pointers & Sliding WindowArrays & Strings
3
0
29 people solved
Aug 2, 2026
Google logo
GoogleAmazonTikTok

Also asked at TikTok, Microsoft, Bloomberg, Meta, Deloitte, eBay

Medium
Software Engineer

Measure the Smallest Segment that Needs Sorting

Problem Return the minimum length of one contiguous segment whose nondecreasing sort would make all of nums nondecreasing. Return zero when nums is al...

Coding & AlgorithmsSortingArrays & Strings
1
0
14 people solved
Anthropic logo
Anthropic
Medium
Software Engineer

Find Duplicate Files

Implement a file deduplication tool. You are given a root directory containing many files. Return groups of duplicate files. Two files are duplicates ...

Coding & AlgorithmsFile & Media StorageConcurrency
45
0
309 people solved
Mar 2, 2026
Amazon logo
AmazonSpotifyWhatnot

Also asked at Whatnot, Google, Uber

Medium
Software Engineer

Most Widely Shared Three-Visit Website Pattern

Problem Parallel arrays username, timestamp and website describe visits. A pattern is an ordered list of three websites, which may repeat. Its score i...

Coding & AlgorithmsArrays & StringsSorting
0
0
12 people solved
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