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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
Tesla logo
Tesla
Medium
Software Engineer

Optimize Trapping Rain Water

Question LeetCode 42. Trapping Rain Water – implement a brute-force solution, analyze its complexity, then optimize to an O(n) solution with O(n) spac...

Coding & AlgorithmsTwo Pointers & Sliding WindowDynamic Programming
17
0
158 people solved
Aug 4, 2025
Pinterest logo
Pinterest
Medium
Data Scientist Locked

Implement weighted random choice

This question evaluates understanding of weighted random sampling, probability distributions, input validation, and algorithmic time and space complex...

Coding & AlgorithmsProbabilityArrays & Strings
21
0
143 people solved
Mar 10, 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
Google logo
Google
Medium
Software Engineer

Build a bigram next-word predictor with weighted sampling

You are given a training set of token sequences (sentences), for example: ` [["a","b","c"], ["a","s","d"]] ` 1) Train a simple next-word prediction m...

Machine LearningNatural Language ProcessingArrays & Strings
12
0
168 people solved
Jan 11, 2026
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
Hard
Software Engineer

Shuffle array using random integer API

You are given an array nums of length n representing a deck of distinct cards. You do not have access to a built-in shuffle function, but you are give...

Coding & AlgorithmsMath & Number TheoryArrays & Strings
10
0
145 people solved
Dec 8, 2025
Goldman Sachs logo
Goldman Sachs
Easy
Software Engineer Locked

Constant-Time Put, Delete and Uniform Random Selection Data Structure

Design a data structure that inserts a key, deletes a key, and returns a uniformly random stored key, with every operation in constant time. It tests ...

Software Engineering FundamentalsData Structure Design
5
0
40 people solved
Sep 13, 2026
Retool logo
Retool
Medium
Software Engineer

Compute max profit with forced trades

Compute max profit with forced trades Given an array prices where prices[i] is the stock price on day i, solve two related tasks under a forced-trade ...

Coding & AlgorithmsDynamic ProgrammingArrays & Strings
21
0
145 people solved
Jul 26, 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
DoorDash logo
DoorDash
Medium
Software Engineer

Can two names match with ≤2 swaps?

You are given two restaurant names represented as strings s and t of equal length (same character set, case-sensitive). In one operation, you may swap...

Coding & AlgorithmsArrays & Strings
8
0
128 people solved
Jan 13, 2026
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
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
Google logo
Google
Medium
Software Engineer

Find mode in a trinary search tree

You are given the root of a trinary search tree where each node has up to three children: `text class Node { int val; Node left; // all values ...

Coding & AlgorithmsTrees
19
0
208 people solved
Nov 16, 2025
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
BlackRock logo
BlackRock
Easy
Software Engineer Locked

Traverse a tree and answer 2D prefix sums

This question evaluates a candidate's competency in tree traversal and array preprocessing, specifically in-order traversal of binary trees and 2D pre...

Coding & AlgorithmsTreesGrids & Matrices
18
0
126 people solved
Jan 22, 2026
Apple logo
Apple
Medium
Software Engineer Locked

Find k Smallest Pair Sums

This question evaluates skills in algorithm design, working with sorted arrays, pairing and ordering elements, and analyzing time and space complexity...

Coding & AlgorithmsHeaps & Priority Queues
12
0
90 people solved
Dec 22, 2025
Amazon logo
Amazon
Medium
Data Scientist

Solve two-sum variants at scale

Base task: Given nums = [3, 1, 2, 2, 4] and target = 4, return the 0-based index pair (i, j) with i < j such that nums[i] + nums[j] = target. If multi...

Coding & AlgorithmsArrays & StringsTwo Pointers & Sliding Window
16
0
128 people solved
Oct 13, 2025
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
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
Google logo
Google
Medium
Product Manager

Letter-Guessing Strategy for a Program That Plays Hangman

You are interviewing for a product manager role at Google, and the interviewer asks a technical question: if you had to write a program that plays Han...

Software Engineering FundamentalsProbabilitySimulation & State Machines
1
0
13 people solved
May 18, 2025
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