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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
Coinbase logo
Coinbase
Hard
Software Engineer

Pick Mempool Transactions for a Block with Parent Dependencies and CPFP

A mempool holds transactions that are waiting to be included in a block. Each transaction has an id, a fee that the miner collects for including it, a...

Software Engineering FundamentalsGreedyGraphs
8
0
109 people solved
Oct 14, 2026
Rippling logo
Rippling
Hard
Software Engineer Locked

Bill Deliveries with Historical Rates and Deferred Rounding

Bill deliveries with start-time historical rates, duplicate suppression, overlapping jobs, exact sub-cent accumulation, and configurable final half-up...

Coding & AlgorithmsData Structure DesignBinary Search
83
0
906 people solved
Sep 13, 2026
Valon logo
Valon
Medium
Software Engineer

Loan Ledger: Fee-First Payments and Out-of-Order Event Processing

You are implementing a simplified loan-accounting component. Loan accounting tracks the state of a loan over time, and this version tracks only two fi...

Software Engineering FundamentalsData Structure Design
28
0
258 people solved
Sep 24, 2026
OpenAI logo
OpenAI
Hard
Software Engineer

Implement malloc and free over Fixed Memory, Then Make Both Logarithmic

Implement a simple memory allocator with malloc and free operations in Python. The interviewer provides test cases that allocate blocks, free some of ...

Software Engineering FundamentalsMemory ManagementData Structure Design
16
0
205 people solved
Oct 4, 2026
Uber logo
Uber
Hard
Software Engineer

Return the k Smallest Squares of a Sorted Integer Array in Order

You are given an integer array nums sorted in non-decreasing order, which may contain negative numbers, and an integer k. Return the k smallest values...

Coding & AlgorithmsBinary SearchTwo Pointers & Sliding Window
17
0
128 people solved
Sep 29, 2026
Google logo
GoogleAmazonBloomberg

Also asked at Bloomberg, Microsoft, Grammarly, Meta, TCS, Infosys, Zoho, Accenture, Yandex

Easy
Software Engineer

Find the Sorted Insertion Index

Problem You receive a strictly increasing integer array items and an integer key. Return the zero-based position of key when it is already in the arra...

Coding & AlgorithmsBinary Search
3
1
37 people solved
Amazon logo
Amazon
Medium
Software Engineer

Minimize Delivery-Grid Inconvenience

Minimize Delivery-Grid Inconvenience A binary grid marks delivery centers with 1 and all other cells with 0. The distance between two cells is Chebysh...

Coding & AlgorithmsGrids & MatricesBinary Search
63
2
573 people solved
Aug 26, 2026
OpenAI logo
OpenAI
Medium
Software Engineer

Social Graph with Follow/Unfollow, Snapshots, History Queries and Recommendations

Implement an in-memory social graph in which users follow and unfollow other users. Besides the current relationships, the class must take snapshots o...

Software Engineering FundamentalsData Structure DesignGraphs
8
0
106 people solved
Oct 9, 2026
Hudson River Trading logo
Hudson River Trading
Hard
Software Engineer

Final Grid Position Under Timestamped Direction Changes With Dot Obstacles

An object sits on a rectangular grid. Over time, a list of timestamped actions sets the direction in which it travels: up, down, left or right. While ...

Coding & AlgorithmsSimulation & State Machines
54
0
393 people solved
Aug 8, 2026
Rippling logo
Rippling
Medium
Software Engineer

Delivery Cost Dashboard with Effective-Dated Driver Rates and Exact Money Totals

A food-delivery platform pays its drivers per delivery. The cost of one delivery is its duration multiplied by the hourly rate of the driver who made ...

Software Engineering FundamentalsLow-Level Design (OOP)
19
0
158 people solved
Oct 1, 2026
Oracle logo
Oracle
Medium
Software Engineer

Shortest Subarray Whose Distinct-Value Sum Reaches a Target

Given an array of positive integers nums and a positive integer target, return the length of the shortest contiguous subarray whose distinct sum is at...

Coding & AlgorithmsTwo Pointers & Sliding Window
8
1
72 people solved
Oct 15, 2026
Nuro logo
Nuro
Medium
Software Engineer

Weighted Random Letter Generator With Add, Remove and Generate

Write a class that generates random letters according to weights. The class was described as having four methods, of which three were reported: - add(...

Software Engineering FundamentalsData Structure DesignMath & Number Theory
1
0
22 people solved
Oct 19, 2026
DoorDash logo
DoorDash
Medium
Software Engineer Locked

Debug a Round-Robin Load Balancer, Then Implement Consistent Hashing

Debug a round-robin load balancer that must keep strict rotation while servers are added and removed, then implement a consistent-hash ring that gives...

Software Engineering FundamentalsPartitioning & Consistent HashingDebugging
24
1
277 people solved
Sep 7, 2026
Amazon logo
Amazon
Medium
Software Engineer

Max total of k consecutive bags over disjoint valued segments, modulo 1e9+7

Bags stand in a single row that never ends, one bag at every positive integer position 1, 2, 3, .... You are given segments, where segments[i] = [l, r...

Coding & AlgorithmsTwo Pointers & Sliding WindowIntervals & Scheduling
22
0
191 people solved
Sep 12, 2026
OpenAI logo
OpenAI
Hard
Software Engineer Locked

Find a Hidden Number When Each Comparison Answer Arrives One Call Late

Find a hidden integer from 1 to n using a comparison API whose answers arrive one call late: each call submits a new guess but returns the result for ...

Software Engineering FundamentalsBinary Search
49
0
362 people solved
Sep 20, 2026
LinkedIn logo
LinkedIn
Medium
Software EngineerSenior+

Extend a Log-Processing Codebase: Priority Classification, Tests, Time-Window Query

In this round you receive a long requirements document and several existing source files, and you extend that code with log-processing features while ...

Software Engineering FundamentalsAI-Assisted DevelopmentTesting & Quality
9
0
72 people solved
Sep 29, 2026
Squarepoint logo
Squarepoint
Easy
Quantitative ResearcherNew Grad

Newton's Method Root Finder and a Stopping Rule That Guarantees the Requested Tolerance

In a HackerRank coding exercise, implement a function that finds a root of a given function to a requested tolerance tol, using Newton's method. The i...

Statistics & MathMath & Number Theory
0
0
11 people solved
Nov 2, 2026
Anthropic logo
Anthropic
Medium
Software Engineer Locked

Mode, Median and Sort Across 10 Nodes with Send/Receive While Minimizing Traffic

Integers are spread across 10 nodes that communicate only by sending and receiving messages. Write the per-node programs that compute the exact mode, ...

Software Engineering FundamentalsPartitioning & Consistent HashingBatch & Stream Processing
20
0
155 people solved
Sep 18, 2026
Snapchat logo
Snapchat
Medium
Machine Learning Engineer

Find a Strictly Unimodal Array Peak and Analyze Plateaus

An array strictly increases up to a unique maximum and strictly decreases afterward. Return the index of that peak using binary search. Constraints an...

Coding & AlgorithmsBinary Search
1
0
15 people solved
Oct 28, 2026
Citadel Securities logo
Citadel Securities
Hard
Software Engineer

Approximate a Square Root and Clarify the Integer Follow-up

Write a function that computes the square root of a nonnegative number using basic arithmetic and comparisons. Then explain what changes if the input ...

Coding & AlgorithmsBinary SearchMath & Number Theory
1
0
16 people solved
Oct 19, 2026
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