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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
Apple logo
Apple
Hard
Software Engineer Locked

Count subarrays with sum equals k

This question evaluates a candidate's competency in array algorithms and reasoning about contiguous subarray sums, including correct handling of negat...

Coding & AlgorithmsArrays & Strings
26
0
196 people solved
Feb 11, 2026
Bloomberg logo
Bloomberg
Medium
Software Engineer Locked

Solve common string/tree/grid interview tasks

This problem set evaluates practical coding competencies including string parsing and sign handling, positional and frequency-based matching for feedb...

Coding & AlgorithmsArrays & StringsTrees
14
0
106 people solved
Feb 12, 2026
DoorDash logo
DoorDash
Medium
Data Scientist

Implement minimum window substring with counts

Implement min_window_with_counts(s, t) Task Write a function: - min_window_with_counts(s: str, t: str) -> tuple[int, int] that returns the inclusive (...

Coding & AlgorithmsTwo Pointers & Sliding WindowArrays & Strings
11
0
139 people solved
Oct 13, 2025
Reevo logo
Reevo
Medium
Software Engineer

Check strings against dictionary efficiently

Given a large dictionary of unique words and a list of query strings, return for each query whether it exists in the dictionary. The dictionary may co...

Coding & AlgorithmsArrays & Strings
12
0
122 people solved
Aug 12, 2025
Instacart logo
Instacart
Medium
Software Engineer

Pivot order-status counts

Pivot order-status counts Given an orders table (order_id, shopper_id, order_date, status, …), pivot the data so that each row is one shopper and each...

Coding & AlgorithmsArrays & Strings
12
0
153 people solved
Aug 4, 2025
Meta logo
Meta
Medium
Software EngineerSenior+ Locked

Solve string transform and min-move sorting

This two-part problem evaluates string manipulation and algorithmic problem-solving competencies, specifically rule-based text transformation and comp...

Coding & AlgorithmsArrays & StringsSorting
7
0
110 people solved
Jan 22, 2026
J.P. Morgan logo
J.P. Morgan
Easy
Software Engineer Locked

Design an autocomplete suggestions API

This question evaluates understanding of string-oriented data structures (e.g., prefix trees/tries), ranked retrieval and dynamic updates, testing ski...

Coding & AlgorithmsTrees
10
0
86 people solved
Jan 22, 2026
Meta logo
Meta
Medium
Machine Learning Engineer

Implement weighted random city and sparse dot product

Question 1: Weighted random city picker You are given a mapping from city → population (all populations are positive integers). Implement a random gen...

Coding & AlgorithmsMath & Number TheoryBinary Search
14
0
101 people solved
Dec 15, 2025
Citadel logo
Citadel
Medium
Software Engineer Locked

Design a token manager with lazy expiration

This question evaluates time-based data structure design and algorithmic reasoning for managing expiring items, focusing on hashing, timestamp orderin...

Coding & AlgorithmsData Structure DesignArrays & Strings
15
0
130 people solved
Jan 9, 2026
Meta logo
Meta
Easy
Data Scientist

Compute maximum score using up to 3 categories

Problem A library runs a summer reading program. Each book a student reads earns a certain number of points, and each book belongs to a category. A st...

Coding & AlgorithmsArrays & Strings
6
0
87 people solved
Dec 2, 2025
Meta logo
Meta
Easy
Software Engineer

Implement list cloning and k-frequency finder

You are given two separate coding tasks. --- Problem 1: Deep copy a linked list with extra pointers You are given the head of a singly linked list. Ea...

Coding & AlgorithmsLinked ListsArrays & Strings
5
0
100 people solved
Nov 27, 2025
SoFi logo
SoFi
Medium
Software Engineer

Determine reachability and minimum jumps

Determine reachability and minimum jumps Given an array of non-negative integers nums of length n, where nums[i] is the maximum number of steps you ca...

Coding & AlgorithmsGreedyArrays & Strings
9
0
103 people solved
Aug 7, 2025
Uber logo
Uber
Medium
Software Engineer Locked

Group strings that are anagrams

This question evaluates string-processing and data-structuring competency, focusing on identifying and grouping anagrams through comparison of unorder...

Coding & AlgorithmsArrays & Strings
15
0
214 people solved
Mar 1, 2026
Amazon logo
Amazon
Medium
Software Engineer

Compute peak parking lot occupancy intervals

You are given logs from a parking lot system. Each log entry has the form: [carId, time, eventType] - carId is an integer identifying a car. - time is...

Coding & AlgorithmsIntervals & SchedulingSorting
8
0
139 people solved
Dec 2, 2025
Airbnb logo
Airbnb
Medium
Software Engineer

Find palindrome-forming string pairs

Given an array of distinct lowercase strings words, return all index pairs (i, j) with i != j such that the concatenation words[i] + words[j] is a pal...

Coding & AlgorithmsString AlgorithmsArrays & Strings
17
0
124 people solved
Jul 31, 2025
SoFi logo
SoFi
Easy
Software Engineer Locked

Find maximum-occurring character in a string

This question evaluates proficiency in string manipulation and frequency counting, including correct handling of tie-breaking by earliest first occurr...

Coding & AlgorithmsArrays & Strings
6
0
81 people solved
Jan 7, 2026
Tesla logo
Tesla
Medium
Software Engineer

Verify permutation in-place and implement fast power

1) Given an integer list A of length n, determine whether A is a permutation of [0, 1, ..., n-1]. Do it in-place with O( 1) extra space (no auxiliary ...

Coding & AlgorithmsArrays & StringsMath & Number Theory
8
0
105 people solved
Sep 6, 2025
Visa logo
Visa
Medium
Software Engineer

Maintain pair-sum counts under replacements

You are given two integer arrays A and B and a list of operations: ( 1) Query(T): return the number of pairs (i, j) such that A[i] + B[j] = T. ( 2) Re...

Coding & AlgorithmsData Structure DesignArrays & Strings
7
0
121 people solved
Sep 6, 2025
Anthropic logo
Anthropic
Medium
Software Engineer

Detect duplicate files by content

Detect duplicate files by content in a filesystem. Given access to a directory tree, return groups of file paths that have identical byte content. Min...

Coding & Algorithms
15
0
246 people solved
Aug 1, 2025
Meta logo
Meta
Medium
Software Engineer

Design an O(1) recency-evicting cache

Design and implement a fixed-capacity in-memory cache that supports get(key) and put(key, value) in average O( 1) time. When capacity is exceeded, evi...

Coding & AlgorithmsData Structure DesignLinked Lists
9
0
122 people solved
Sep 6, 2025
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