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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
333
Companies
980
Updated
11.06.2026
333 Questions 980 Companies11.06.2026
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
TikTok logo
TikTok
Medium
Software Engineer

Compute length of longest increasing subsequence

You are given an integer array nums of length n. A subsequence of nums is a sequence that can be derived from nums by deleting zero or more elements w...

Coding & AlgorithmsDynamic ProgrammingBinary Search
14
0
137 people solved
Dec 10, 2025
Google logo
Google
Hard
Software Engineer

Largest Subarray Sum with a Limited Number of Swaps

Largest Subarray Sum with a Limited Number of Swaps You are given an integer array nums and an integer k. You may perform at most k swaps. Each swap e...

Coding & AlgorithmsGreedyArrays & Strings
0
0
8 people solved
Meta logo
Meta
Medium
Software Engineer Locked

Design a Concurrent, Memory-Bounded Tally Service

Design a tally service that records timestamped events and answers inclusive range-count queries, beginning with an exact baseline and evolving toward...

Software Engineering FundamentalsData Structure DesignConcurrency
13
0
140 people solved
Jul 1, 2026
OpenAI logo
OpenAI
Medium
Machine Learning Engineer

Find earliest supporting version under constraints

You are given version strings formatted as {major}.{minor}.{patch}, e.g., "103.003.03". Each version either supports a feature or not. You may call is...

Coding & AlgorithmsBinary Search
34
0
561 people solved
Sep 6, 2025
Crowdstrike logo
Crowdstrike
Medium
Software Engineer Locked

Maximize the minimum value along a grid path

This question evaluates a candidate's competence in graph traversal and path-optimization concepts, emphasizing reasoning about path scores and handli...

Coding & AlgorithmsGrids & MatricesGraphs
6
0
109 people solved
Jan 22, 2026
Snowflake logo
Snowflake
Medium
Software Engineer

Highest Total Value from At Most k Non-Overlapping Meetings

Each meeting has a start day, an end day and a value. You may attend at most k meetings, you must attend each chosen meeting from its start day throug...

Coding & AlgorithmsDynamic ProgrammingIntervals & Scheduling
1
0
22 people solved
Apr 28, 2026
Rippling logo
Rippling
Medium
Software EngineerIntern

Find median of two sorted arrays

You are given two sorted arrays of integers nums1 and nums2 in non-decreasing order. Let the lengths be m = nums1.length and n = nums2.length. Either ...

Coding & AlgorithmsBinary SearchArrays & Strings
35
0
263 people solved
Nov 20, 2025
Snowflake logo
Snowflake
Medium
Software Engineer

In-Memory Key-Value Store with Constant-Time Nested Transactions

Implement an in-memory key-value store with transactions. It supports get, set and delete, plus begin, commit and rollback, and the question asks for ...

Software Engineering FundamentalsData Structure DesignTransactions & Isolation
1
0
14 people solved
Apr 28, 2026
Ramp logo
Ramp
Medium
Software EngineerIntern

Per-IP Sliding-Window Rate Limiter: Accept or Reject Each Request

A service receives a sequence of requests. Request i arrives at time timestamps[i] from the IP address ip_addresses[i]. Each IP address may have at mo...

Coding & AlgorithmsRate LimitingStacks & Queues
9
0
90 people solved
Jun 16, 2025
The Trade Desk logo
The Trade Desk
Medium
Machine Learning Engineer

Design a time-travel key-field store with TTL

Problem Implement an in-memory “database” that stores records by key and fields within each key. Each operation is given a timestamp (integer, non-dec...

Coding & AlgorithmsData Structure DesignKey-Value Stores
8
0
151 people solved
Nov 19, 2025
Google logo
Google
Hard
Software Engineer Locked

Find minimum threshold enabling grid path

This question evaluates a candidate's understanding of grid pathfinding, reachability under constraints, and algorithmic optimization, focusing on ski...

Coding & AlgorithmsBinary SearchGrids & Matrices
15
1
211 people solved
Feb 11, 2026
LinkedIn logo
LinkedIn
Medium
Software Engineer Locked

Design a meeting scheduler API

This question evaluates object-oriented design, interval data-structure and algorithmic thinking, and concurrent programming competence by requiring a...

Software Engineering FundamentalsData Structure DesignIntervals & Scheduling
13
0
245 people solved
Feb 12, 2026
Bloomberg logo
Bloomberg
Medium
Software Engineer

Answer multi-round grid and data-structure questions

You are given several independent interview-style coding questions. 1) Find first/last occurrence in sorted array (+ dynamic updates follow-ups) Given...

Coding & AlgorithmsBinary SearchData Structure Design
26
0
195 people solved
Oct 30, 2025
Grammarly logo
Grammarly
Easy
Software Engineer

Implement string reduction and time map

In a coding interview, you are asked to solve two algorithm problems. 1. String reduction with adjacent duplicates - Basic version: Given a string ...

Coding & AlgorithmsStacks & QueuesData Structure Design
22
1
182 people solved
Nov 29, 2025
Microsoft logo
Microsoft
Medium
Software Engineer

Build a time-based key-value store

Problem Design a data structure that stores multiple values for the same key at different timestamps, and can retrieve the most recent value as of a g...

Coding & AlgorithmsData Structure DesignBinary Search
10
0
105 people solved
Oct 14, 2025
Citadel logo
Citadel
Medium
Software EngineerIntern

Design dynamic weighted random sampling with updates

Problem: Support weighted random sampling with insert/delete Design a data structure that maintains a dynamic set of items, each with a positive integ...

Coding & AlgorithmsData Structure DesignTrees
21
0
272 people solved
Feb 11, 2026
Google logo
Google
Medium
Software Engineer Locked

Find median of merged RLE arrays

The question evaluates understanding of run-length encoding, order-statistics (median) computation, and efficient merging of frequency-annotated seque...

Coding & AlgorithmsBinary Search
15
1
212 people solved
Jan 6, 2026
Navan logo
Navan
Medium
Software Engineer

Design time-based key-value store

Design an in-memory key-value store that supports time-based lookups. Operations Implement a class (or module) with the following methods: 1. set(key,...

Coding & AlgorithmsData Structure DesignBinary Search
8
0
161 people solved
Nov 7, 2025
Pinterest logo
Pinterest
Medium
Software Engineer

Find minimal time to serve customers

Find minimal time to serve customers You manage a bank with k tellers; teller i takes serviceTimes[i] minutes to serve one customer and works continuo...

Coding & AlgorithmsBinary Search
10
0
187 people solved
Jul 28, 2025
xAI logo
xAI
Medium
Machine Learning Engineer

Identify all bad nodes with group tests

You have N nodes. Each node is either good or bad (unknown to you). You can call a function test(S) on a subset of nodes S: - test(S) = True iff all n...

Coding & Algorithms
19
1
313 people solved
Sep 22, 2025
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