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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
11.9k
Companies
569
Updated
10.02.2026
11.9k Questions 569 Companies10.02.2026

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>Build a 30-day plan from PracHub's Meta SWE questions.

Two weeks of coding, then system design, then mock rounds. Start day 1?

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
Capital One logo
Capital One
Hard
Software Engineer

Reorder a String by Alternating Its Front and Back Characters

Given a string s, build a new string by taking characters alternately from the front and the back of s: the first character, then the last character, ...

Coding & AlgorithmsTwo Pointers & Sliding Window
2
0
29 people solved
Sep 10, 2026
Perplexity logo
Perplexity
Medium
Software Engineer Locked

Implement an In-Memory File System

Design an in-memory hierarchical file system with absolute and relative paths, a working directory, creation, listing, removal, and navigation. Define...

Software Engineering FundamentalsData Structure Design
47
0
324 people solved
Jul 10, 2026
ByteDance logo
ByteDance
Medium
Data Engineer Locked

Design a Data Service for Downstream Consumers

Design a governed data service with stable APIs, serving projections, cursor and export semantics, freshness evidence, and secure schema evolution.

System Design
22
0
154 people solved
Aug 28, 2026
Capital One logo
Capital One
Hard
Software Engineer

Sum of Distinct Values on the Borders of All Maximum-Sum Square Frames

You are given a rectangular matrix of integers and an integer frame_size. A frame is any square submatrix made of frame_size consecutive rows and fram...

Coding & AlgorithmsGrids & Matrices
1
0
27 people solved
Sep 10, 2026
Whatnot logo
Whatnot
Medium
Software Engineer

Assign Waiting Riders to the Earliest-Arriving Car on Fixed Routes

A map has n attractions, numbered 0 to n - 1, joined by two-way roads. roads[i] = [u, v, t] is a road between attractions u and v that takes t minutes...

Coding & AlgorithmsArrays & Strings
1
0
8 people solved
Sep 22, 2026
Amazon logo
Amazon
Hard
Software Engineer Locked

Retrieve the Latest Timestamped Value for Each Key

Process timestamped set and get operations so each lookup returns the value with the greatest timestamp for its key. The exercise covers out-of-order ...

Coding & Algorithms
9
1
132 people solved
Aug 30, 2026
Hudson River Trading logo
Hudson River Trading
Medium
Software Engineer Locked

Simulate Players Moving Under a Watcher's Gaze

Simulate players advancing along a road while a moving watcher periodically reverses direction and freezes observed players. Follow the exact discrete...

Coding & AlgorithmsSimulation & State Machines
32
0
346 people solved
Jul 8, 2026
Microsoft logo
Microsoft
Medium
Software Engineer

Longest Single-Letter Substring After at Most k Letter Replacements

You are given a string s made of uppercase English letters and an integer k. You may perform at most k operations. In each operation you pick one posi...

Coding & AlgorithmsTwo Pointers & Sliding Window
2
0
28 people solved
Sep 6, 2026
Lyft logo
Lyft
Medium
Software EngineerSenior+

Design One-to-One Messaging Across Multiple Devices

Design a messenger that supports one-to-one conversations. Messages must be stored on the server so users can retrieve their conversation history. Par...

System DesignReal-Time SystemsAuthentication & Authorization
3
0
47 people solved
Sep 8, 2026
Fora Travel logo
Fora Travel
Easy
Software Engineer Locked

Design a Hierarchical Learning Content API

Design a track-module-lesson API with normalized ownership, stable ordering, bounded hierarchy queries, transactional edits, and version-aware caching...

System Design
12
0
101 people solved
Aug 31, 2026
Snowflake logo
Snowflake
Medium
Machine Learning Engineer

Design a Pipeline That Distills Reusable Agent Skills for Enterprise Customers

In an expertise round built around the team's own work on AI agents, you are asked: design a pipeline that automatically extracts, or distills, agent ...

ML System DesignAI Agents
3
0
26 people solved
Sep 7, 2026
ByteDance logo
ByteDance
Medium
Software EngineerNew Grad

Check Whether an n x n Tic-Tac-Toe Game Is Over (Win or Draw)

You are given the current state of an n x n tic-tac-toe board played by two players. A player wins by occupying all n cells of any row, any column, th...

Coding & AlgorithmsGrids & Matrices
1
0
20 people solved
Sep 13, 2026
Glean logo
Glean
Medium
Software Engineer

Implement a Byte-Pair Encoding Tokenizer: Threshold Training, Encode and Decode

Implement a byte-pair encoding (BPE) tokenizer from scratch with three functions: - train(text: str, threshold: int) learns merge rules from text. - e...

Software Engineering FundamentalsArrays & Strings
0
0
8 people solved
Sep 30, 2026
Waymo logo
Waymo
Medium
Software Engineer

Does a Seven-Segment LED Digit Display Read the Same Rotated 180 Degrees?

An LED display shows a row of digits from 0 to 9, one digit per seven-segment cell. Write a function that decides whether the display reads exactly th...

Coding & AlgorithmsArrays & Strings
3
0
29 people solved
Sep 10, 2026
Amazon logo
Amazon
Medium
Software EngineerNew Grad

Kth Largest Values in a Stream

Kth Largest Values in a Stream Implement kth_largest_after_additions(k: int, initial: list[int], additions: list[int]) -> list[int]. Begin with the va...

Coding & Algorithms
13
1
95 people solved
Aug 20, 2026
Google logo
Google
Medium
Software EngineerSenior+ Locked

Find Paths Across a Weighted Binary Grid

Solve three top-to-bottom path tasks on a blocked grid: reachability, deterministic enumeration of simple paths, and a minimum-cost weighted path. Add...

Coding & AlgorithmsGrids & MatricesGraphs
39
2
587 people solved
Jul 17, 2026
Microsoft logo
Microsoft
Hard
Software Engineer Locked

Validate a Hierarchy and Compute Propagation Time

Build a rooted hierarchy from relationship data, detect invalid cycles, and compute the longest root-to-node propagation distance.

Coding & Algorithms
6
0
125 people solved
Sep 2, 2026
Tesla logo
Tesla
Medium
Software Engineer

Design an Order Fulfillment System

Design an Order Fulfillment System Design the backend flow that takes an accepted customer order through inventory reservation, payment, warehouse pro...

System Design
4
0
62 people solved
Aug 24, 2026
Charta Health logo
Charta Health
Medium
Software Engineer

Explain Your Project and Motivation for Charta Health

Give a detailed walkthrough of a project you worked on, then explain why you are interested in joining Charta Health. Part 1 — Project deep dive Descr...

Behavioral & LeadershipProject Deep DiveMotivation & Fit
2
0
40 people solved
Sep 9, 2026
Waymo logo
Waymo
Medium
Data Scientist

Average of a List of Integers, Returning 0 for an Empty List

This warm-up comes from a timed online assessment for a data science role. Write a function average(table) that returns the arithmetic mean of the num...

Coding & AlgorithmsArrays & Strings
1
0
29 people solved
Sep 10, 2026
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