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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
Two Sigma logo
Two Sigma
Easy
Data Scientist Locked

Merge two sorted lists

This question evaluates a candidate's competency in array manipulation and merging algorithms, emphasizing understanding of ordered data and time comp...

Coding & AlgorithmsTwo Pointers & Sliding Window
6
0
105 people solved
Feb 13, 2026
Google logo
Google
Easy
Data Scientist Locked

Build next-word predictor with O(1) lookup

This question evaluates skills in language modeling, data structures, algorithmic optimization, and probabilistic sampling, within the Coding & Algori...

Coding & AlgorithmsData Structure DesignArrays & Strings
12
1
125 people solved
Feb 2, 2026
Capital One logo
Capital One
Medium
Software Engineer

Count ordered pairs that concatenate to target

Given a list of integers numbers and an integer target, count the number of ordered pairs (i, j) with i != j such that concatenating numbers[i] follow...

Coding & AlgorithmsArrays & Strings
23
0
172 people solved
Sep 19, 2025
Ambience Healthcare logo
Ambience Healthcare
Medium
Software Engineer

Design a least-recently-used cache

Design a least-recently-used cache Design and implement a least-recently-used (LRU) cache with a fixed capacity. Support get(key) -> value and put(key...

Coding & AlgorithmsData Structure DesignLinked Lists
15
0
132 people solved
Jul 31, 2025
Google logo
Google
Easy
Software Engineer Locked

Build a next-word frequency predictor

This question evaluates understanding of data structures and algorithms for frequency counting and associative lookups, including preprocessing-versus...

Coding & AlgorithmsData Structure Design
48
2
338 people solved
Feb 12, 2026
Pika logo
Pika
Medium
Software Engineer

Implement text formatter and sum subarray products

1) Text formatter (LC-inspired variant): Given an array of words and an integer maxWidth W >= 1, break the words into lines so that the total length o...

Coding & AlgorithmsArrays & StringsDynamic Programming
7
0
111 people solved
Aug 12, 2025
Google logo
Google
Easy
Software Engineer

Find k pairs with smallest sums

You are given two sorted integer arrays arr1 and arr2 (each sorted in non-decreasing order), and an integer k. Consider all possible pairs formed by t...

Coding & AlgorithmsHeaps & Priority QueuesArrays & Strings
18
0
142 people solved
Nov 1, 2025
Netflix logo
Netflix
Medium
Software Engineer

Find longest unique show window

Given an array of show names (strings) representing a user's viewing history, return the start and end indices of a longest contiguous subarray that c...

Coding & AlgorithmsTwo Pointers & Sliding WindowArrays & Strings
13
0
205 people solved
Aug 1, 2025
Pinterest logo
Pinterest
Easy
Data Scientist

Compute average unique pins per user

Task: Average Unique Pins Per User You are given a mapping from user IDs to their lists of pin IDs. Implement a function that computes the mean number...

Coding & AlgorithmsArrays & Strings
26
0
195 people solved
Oct 13, 2025
Coinbase logo
Coinbase
Medium
Software Engineer

Compute prices, distances, and Top-K for orders

Compute prices, distances, and Top-K for orders Build functions for a food‑delivery analytics module. Data: - Restaurants: id, (x, y) location, menu m...

Coding & AlgorithmsHeaps & Priority QueuesArrays & Strings
21
0
167 people solved
Jul 31, 2025
Meta logo
Meta
Medium
Data Engineer

Compute capacities after site closures

You are given a nested dictionary redistribution where redistribution[closed_site][dest_site] equals the additional capacity required at dest_site if ...

Coding & Algorithms
8
0
88 people solved
Sep 6, 2025
TikTok logo
TikTok
Medium
Software Engineer Locked

Solve common string/DP/stack problems

This set of four coding tasks evaluates proficiency in string algorithms, dynamic programming, sliding-window techniques, monotonic stack usage, and t...

Coding & AlgorithmsTwo Pointers & Sliding WindowDynamic Programming
13
0
174 people solved
Feb 12, 2026
Google logo
Google
Medium
Software Engineer Locked

Solve array-sum and city-community problems

This question evaluates array-processing and grid/graph connectivity skills, covering counting subarrays with a target sum and identifying connected b...

Coding & AlgorithmsArrays & StringsGrids & Matrices
15
0
133 people solved
Feb 20, 2026
Capital One logo
Capital One
Medium
Machine Learning Engineer Locked

Implement string/matrix simulations and counting pairs

This multi-part question evaluates implementation skills in string processing (case-insensitive substring matching), grid simulation with iterative ma...

Coding & AlgorithmsSimulation & State MachinesGrids & Matrices
12
0
105 people solved
Jan 12, 2026
HubSpot logo
HubSpot
Medium
Software Engineer

Find spammer with minimal hasMessaged calls

Question You have n accounts labeled 0..n-1 and an oracle API: ` boolean hasMessaged(a, b) // true iff account a has sent at least one message to ac...

Coding & AlgorithmsGraphs
25
0
223 people solved
Aug 14, 2025
Meta logo
Meta
Medium
Machine Learning Engineer Locked

Compute the next lexicographic permutation

This question evaluates understanding of permutations and lexicographic ordering, in-place array manipulation, and algorithmic reasoning about time an...

Coding & AlgorithmsArrays & Strings
10
0
85 people solved
Feb 12, 2026
Capital One logo
Capital One
Easy
Machine Learning Engineer Locked

Solve OA tasks on string, grid path, subarrays

This multi-part question evaluates string manipulation, constrained grid-path optimization with sequential expression evaluation, and counting of pari...

Coding & AlgorithmsGrids & MatricesArrays & Strings
18
0
233 people solved
Jan 21, 2026
Roku logo
Roku
Medium
Software Engineer Locked

Compute longest common subsequence length

This question evaluates understanding of dynamic programming and sequence processing, measuring competence in reasoning about optimal substructure, ov...

Coding & AlgorithmsDynamic ProgrammingArrays & Strings
9
0
110 people solved
Jan 8, 2026
TikTok logo
TikTok
Hard
Software Engineer Locked

Solve four OA algorithm problems

This multi-part exercise evaluates algorithmic problem-solving across combinatorics and geometry (counting axis-aligned square subgrids), string reord...

Coding & AlgorithmsSimulation & State MachinesMath & Number Theory
12
0
171 people solved
Jan 22, 2026
Google logo
Google
Medium
Software Engineer Locked

Check pivot after removing one element

This question evaluates array-manipulation skills, cumulative-sum/prefix-sum reasoning, and robustness in handling negative values and duplicates, tes...

Coding & AlgorithmsArrays & Strings
10
1
196 people solved
Feb 12, 2026
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