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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
Software Engineer

Select words to maximize unique characters

Problem You are given an array of strings words. You may choose any subset of these strings and concatenate the chosen strings in any order. Your goal...

Coding & AlgorithmsBacktracking & RecursionBit Manipulation
50
0
675 people solved
Dec 15, 2025
Google logo
GoogleDoorDashAmazon

Also asked at Amazon, Meta, Uber, Capital One, Microsoft, Snowflake, Coinbase

Medium
Software Engineer

Create and Query Hierarchical Path Values

Problem Implement FileSystem. A valid path is one or more segments, each a slash followed by one or more lowercase letters; empty strings and / alone ...

Coding & AlgorithmsData Structure DesignArrays & Strings
0
0
9 people solved
Google logo
GoogleAmazonMetaTCS

Also asked at Meta, TCS

Easy
Software Engineer

Reshape a Matrix while Preserving Row Order

Problem Return mat reshaped to r rows and c columns, retaining its original row-by-row sequence. If the new dimensions do not contain exactly the same...

Coding & AlgorithmsGrids & Matrices
0
0
12 people solved
Amazon logo
AmazonMicrosoftGuidewire
Medium
Software Engineer

Video Frequencies at One Exact Friendship Distance

Problem The arrays give each person's watched-video list and symmetric friendship neighbors. Starting from id, consider only people whose shortest fri...

Coding & AlgorithmsGraphsSorting
0
0
7 people solved
Stripe logo
Stripe
Medium
Software Engineer Locked

Implement JSON parsing and HTTP integration tasks

This question evaluates proficiency in JSON parsing, file I/O, HTTP client integration, request/response handling, payload construction, mapping data ...

Coding & AlgorithmsAPI Integration & HTTP Clients
25
0
306 people solved
Nov 26, 2025
Infosys logo
Infosys
Hard
Software Engineer

Count Updates That Admit a Proper Subsequence with a Target GCD

Count Updates That Admit a Proper Subsequence with a Target GCD You are given an integer array nums of length n, a positive integer p, and an ordered ...

Coding & AlgorithmsMath & Number TheoryTrees
0
0
10 people solved
Otter.Ai logo
Otter.Ai
Medium
Software EngineerSenior+

Fewest Adjacent-GCD Operations to Turn Every Array Element into 1

You are given an array nums of positive integers. In one operation, you choose an index i with 0 <= i < len(nums) - 1 and replace either nums[i] or nu...

Coding & AlgorithmsMath & Number Theory
3
0
26 people solved
Aug 4, 2026
Microsoft logo
Microsoft
Medium
Applied ScientistSenior+

Fewest Distinct Values to Delete So at Least Half the Array Is Removed

Given an integer array arr of length n, pick a set of distinct values and delete every occurrence of each picked value from the array. A set is enough...

Coding & AlgorithmsGreedyArrays & Strings
1
0
15 people solved
Aug 27, 2026
Amazon logo
AmazonMicrosoftOracle

Also asked at Oracle, Google, HashedIn

Hard
Software Engineer

Choose a Shared Array Value with Minimum Weighted Unit Cost

Problem Changing nums[i] by one in either direction costs cost[i]. You may make any number of such changes. Return the minimum total cost needed to ma...

Coding & AlgorithmsMath & Number TheorySorting
0
0
8 people solved
Amazon logo
AmazonGoogleMicrosoft

Also asked at Microsoft, Meta, Bloomberg, Flipkart, Sprinklr, Avito, Morgan Stanley, ZS Associates, TikTok, Accenture

Medium
Software Engineer

Sum the Minimum Value of Every Contiguous Subarray

Problem For every nonempty contiguous subarray of arr, take its minimum. Return the sum of those minimums modulo 10^9+7. `cpp class Solution { public:...

Coding & AlgorithmsStacks & QueuesArrays & Strings
1
0
9 people solved
Snowflake logo
Snowflake
Hard
Software Engineer

Find Every Three-Card Set Among Cards With Four Attributes

A card game uses cards that each have four attributes: color, shape, number and shading. As in the standard version of the game, each attribute takes ...

Coding & AlgorithmsArrays & StringsMath & Number Theory
3
0
26 people solved
Jul 4, 2026
Microsoft logo
Microsoft
Hard
Software Engineer

Find all balanced k in a permutation

You are given a permutation \(p\) of length \(n\) containing each integer from \(1\) to \(n\) exactly once. For each \(k\) where \(1 \le k \le n\), de...

Coding & AlgorithmsArrays & Strings
44
0
323 people solved
Mar 1, 2026
Google logo
GoogleMicrosoftBloombergZoho

Also asked at Bloomberg, Zoho

Easy
Software Engineer

Check Whether the Maximum Dominates Every Other Value

Problem The array has a unique largest value. Return its index if it is at least twice every other entry; otherwise return -1. `cpp class Solution { p...

Coding & AlgorithmsArrays & Strings
0
0
12 people solved
Amazon logo
AmazonGoogleDoorDash

Also asked at DoorDash, Meta, Bloomberg, Goldman Sachs, Sprinklr

Medium
Software Engineer

Detect a Strict 132 Pattern

Detect a Strict 132 Pattern Given an integer array nums, determine whether it contains three indices i < j < k such that: `text nums[i] < nums[k] < nu...

Coding & AlgorithmsStacks & QueuesArrays & Strings
0
0
6 people solved
Stripe logo
Stripe
Medium
Software Engineer

Design a subscription email scheduler with changes and renewals

Implement an email notification scheduler for subscription accounts. Inputs: - send_schedule: a mapping whose keys include: • "start": label to send...

Coding & AlgorithmsSimulation & State MachinesSorting
36
0
346 people solved
Aug 12, 2025
Google logo
GoogleMetaAmazon

Also asked at Amazon, Ozon, Capital One, Bloomberg

Easy
Software Engineer

Recognize Nondecreasing or Nonincreasing Arrays

Problem Return whether nums is monotonic: either every earlier value is no greater than every later value, or every earlier value is no smaller than e...

Coding & AlgorithmsArrays & Strings
1
0
13 people solved
Google logo
GoogleRubrik
Hard
Software Engineer

Product Remainder Counts After Array Updates

Product Remainder Counts After Array Updates You are given a positive integer array nums, an integer k, and queries of the form [index, value, start, ...

Coding & AlgorithmsTreesArrays & Strings
1
0
14 people solved
Google logo
GoogleAmazonBloomberg

Also asked at Bloomberg, Meta, Microsoft

Easy
Software Engineer

Are All Value Frequencies Different?

Problem Count how often each distinct integer appears in arr. Return true exactly when no two different values have the same occurrence count. `cpp cl...

Coding & AlgorithmsArrays & Strings
0
0
9 people solved
Amazon logo
AmazonGoogleMeta

Also asked at Meta, Bloomberg, TCS, Microsoft, TikTok, IBM, Oracle

Easy
Software Engineer

Kth Positive Integer Missing from an Increasing Array

Problem Given the strictly increasing positive array arr,return the kth positive integer absent from it. Missing values may occur before,between,or af...

Coding & AlgorithmsBinary SearchArrays & Strings
1
0
7 people solved
Harvey logo
Harvey
Medium
Software Engineer

Design an in-memory file system with limits

Design and implement an in-memory hierarchical file system. Requirements: 1) addFile(String path): Given an absolute path like "path/to/somewhere/file...

Coding & AlgorithmsData Structure DesignTrees
79
0
782 people solved
Sep 6, 2025
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