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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
161
Companies
980
Updated
11.06.2026
161 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
NVIDIA logo
NVIDIA
Easy
Software Engineer

Compare arrays, linked lists, hash tables, trees

Answer the following computer-science fundamentals questions: 1) What are the time complexities (Big-O) of common sorting algorithms (e.g., bubble sor...

Software Engineering FundamentalsSorting
17
0
217 people solved
Feb 6, 2026
Snowflake logo
Snowflake
Medium
Software Engineer

Decide Whether Repeatedly Summing Squared Digits Reaches 1

Starting from a positive integer, repeatedly replace the number by the sum of the squares of its decimal digits. Return whether this process eventuall...

Coding & AlgorithmsMath & Number Theory
2
0
19 people solved
Apr 28, 2026
Salesforce logo
Salesforce
Medium
Software Engineer

Remove duplicates in linked list

Question Given a linked list, remove all duplicate values so that each value appears only once. Provide solutions for both sorted and unsorted linked ...

Coding & AlgorithmsLinked Lists
27
0
129 people solved
Aug 4, 2025
Oracle logo
Oracle
Medium
Software EngineerSenior+

Simulate an LFU cache that evicts the least-used key, breaking ties by recency

Implement a least-frequently-used (LFU) cache with a fixed capacity and simulate a sequence of operations on it. The cache maps integer keys to intege...

Coding & AlgorithmsData Structure Design
1
0
15 people solved
Apr 3, 2026
Google logo
Google
Easy
Software Engineer Locked

Design a waitlist manager

This question evaluates object-oriented design and data-structure competency—modeling a FIFO waitlist API, managing unique party identifiers and edge ...

Software Engineering FundamentalsData Structure DesignStacks & Queues
14
0
121 people solved
Mar 1, 2026
Amazon logo
AmazonGoogleMeta

Also asked at Meta, Bloomberg, Microsoft, Arista Networks, Apple, Oracle, TikTok, BlackBuck

Medium
Software Engineer

Remove Every Repeated-Value Run from a Sorted List

Problem Given the head of a sorted singly linked list, remove every node whose value appears more than once in the original list. Return the head of t...

Coding & AlgorithmsLinked Lists
0
0
8 people solved
Google logo
Google
Medium
Data EngineerIntern

Write SQL and merge linked lists

The technical interview included two coding-style tasks: a SQL analytics query and merging two sorted linked lists. Constraints & Assumptions - For SQ...

Coding & AlgorithmsSQLLinked Lists
9
1
151 people solved
Mar 9, 2025
Microsoft logo
Microsoft
Hard
Software Engineer Locked

Solve Throughput, Rate Limiting, and LFU

This set of tasks evaluates algorithmic problem-solving, data structure design, and systems-oriented reasoning by testing throughput calculation, roll...

Coding & AlgorithmsData Structure DesignRate Limiting
14
0
124 people solved
Mar 20, 2026
Uber logo
Uber
Medium
Software EngineerSenior+ Locked

Implement stream queries and bounded-difference subarrays

This question evaluates proficiency in data structures and algorithmic problem-solving, covering streaming uniqueness tracking (first-non-repeated ele...

Coding & AlgorithmsStacks & QueuesTwo Pointers & Sliding Window
13
0
87 people solved
May 8, 2026
Optiver logo
Optiver
Medium
Software Engineer

Design an object-oriented queue and compare implementations

Design an object-oriented queue and compare implementations You are asked to design an object-oriented Queue abstraction and discuss how it can be imp...

Software Engineering FundamentalsData Structure Design
51
0
430 people solved
Jul 19, 2025
Optiver logo
Optiver
Medium
Software Engineer

Compare common data structures and uses

Compare common data structures and uses Compare common data structures and select appropriate ones for specific tasks. For arrays, linked lists, stack...

Coding & AlgorithmsTrees
29
0
262 people solved
Jul 17, 2025
NVIDIA logo
NVIDIA
Hard
Data Scientist

Reverse linked lists, including k-group

Singly Linked List Reversal — Variants and Edge Cases You are given a standard singly linked list with nodes of the form: - Node fields: value, next -...

Coding & AlgorithmsLinked Lists
8
0
117 people solved
Oct 13, 2025
Shopify logo
Shopify
Medium
Machine Learning Engineer AI Locked

Implement a Capacity-Bounded Cache

This question evaluates a candidate's ability to design and implement an efficient capacity-bounded in-memory key-value cache, assessing understanding...

Coding & AlgorithmsData Structure DesignCaching
10
0
114 people solved
Feb 3, 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
Snowflake logo
Snowflake
Medium
Software Engineer

Deep-Copy a Linked List Whose Nodes Also Carry a Random Pointer

Each node of a singly linked list has a value, a next pointer and a random pointer. The random pointer can point to any node of the list, including th...

Software Engineering FundamentalsLinked Lists
1
0
12 people solved
Apr 28, 2026
Two Sigma logo
Two Sigma
Hard
Data Scientist Locked

Merge Two Sorted Lists

This question evaluates proficiency with linked list data structures, pointer manipulation, in-place merging of sorted sequences, and general algorith...

Coding & AlgorithmsLinked Lists
13
0
93 people solved
Mar 18, 2026
Google logo
Google
Medium
Software Engineer Locked

Solve graph and linked list tasks

This question evaluates competencies in dependency graph modeling and reachability, shortest-path computation in weighted directed graphs, and space-e...

Coding & AlgorithmsGraphs
23
0
236 people solved
Feb 12, 2026
Bloomberg logo
Bloomberg
Medium
Software Engineer

Implement anagram check and odd-even linked list

You are given two independent coding tasks. Task 1: Check if two strings are anagrams Implement a function that determines whether two given strings a...

Coding & AlgorithmsArrays & StringsLinked Lists
13
0
109 people solved
Oct 6, 2025
Salesforce logo
Salesforce
Easy
Software Engineer Locked

Remove duplicates and find constrained longest subsequence

This question evaluates data structure manipulation and string-processing competencies, specifically linked-list deduplication and finding the longest...

Coding & AlgorithmsDynamic ProgrammingLinked Lists
46
0
340 people solved
Jan 22, 2026
Salesforce logo
Salesforce
Hard
Software Engineer

Implement an LFU cache

Problem: LFU Cache Design and implement a Least Frequently Used (LFU) cache with a fixed capacity. The cache supports the following operations: - get(...

Coding & AlgorithmsData Structure DesignCaching
16
0
136 people solved
Dec 15, 2025
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