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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
Rippling logo
Rippling
Medium
Software Engineer AI Locked

Implement Article Vote Tracking

This question evaluates data structures, state-management, and algorithmic skills for tracking per-user votes, detecting vote flips, maintaining a mos...

Coding & AlgorithmsData Structure DesignArrays & Strings
29
1
389 people solved
May 14, 2026
Google logo
GoogleMetaAmazon

Also asked at Amazon, Bloomberg, Microsoft, Arista Networks, TCS, Apple

Easy
Software Engineer

Remove Every Matching Node from a Linked Chain

Problem Remove every node whose value equals val from a singly linked list, and return the new head. Keep the remaining nodes in their existing list o...

Coding & AlgorithmsLinked Lists
0
0
12 people solved
Google logo
GoogleAmazonMeta

Also asked at Meta, Microsoft, Bloomberg, IBM, TCS, Apple, Accenture, NVIDIA, AMD

Easy
Software Engineer

Return the Later Middle Node of a Singly Linked List

Problem Return the middle node pointer of the singly linked list beginning at head. If the list has two middle nodes, return the second one. Example o...

Coding & AlgorithmsLinked ListsTwo Pointers & Sliding Window
1
0
11 people solved
TikTok logo
TikTokMetaAmazon

Also asked at Amazon, Optum, LinkedIn, Atlassian, Nextdoor, Google, Microsoft, Bloomberg, Spotnana

Hard
Software Engineer

Maintain String Counts With Minimum and Maximum Queries

Maintain String Counts With Minimum and Maximum Queries Implement the following stateful AllOne class: - AllOne() creates an empty structure. - void i...

Coding & AlgorithmsData Structure DesignArrays & Strings
1
0
15 people solved
Amazon logo
AmazonGoogleMicrosoft

Also asked at Microsoft, Meta, Bloomberg

Medium
Software Engineer

Partition List Nodes Stably around a Threshold

Problem Partition the nodes of a singly linked list around x. Every node with value less than x must precede every node with value greater than or equ...

Coding & AlgorithmsLinked Lists
0
0
11 people solved
Amazon logo
Amazon
Medium
Software Engineer

Design a Structure That Returns the Max of the Last k Inserted Numbers

Design a data structure that receives a stream of numbers and reports the maximum of the most recent k numbers inserted. Implement this interface: `py...

Software Engineering FundamentalsData Structure DesignStacks & Queues
2
0
25 people solved
Aug 29, 2026
Amazon logo
AmazonGoogleNVIDIA
Medium
Software Engineer

Sample a Linked-List Node Uniformly

Sample a Linked-List Node Uniformly You receive the head of a nonempty singly linked list. Implement: - Solution(head): initialize an object using the...

Coding & AlgorithmsMath & Number TheoryProbability
1
0
7 people solved
Amazon logo
Amazon
Medium
Software EngineerNew Grad

Design a TTL-Aware LRU Cache Without Full Expiration Scans

Design an in-memory cache that combines a capacity limit, least-recently-used eviction, and time-to-live expiration. Explain how reads and writes upda...

Software Engineering FundamentalsData Structure DesignCaching
8
1
85 people solved
Mar 18, 2026
Airbnb logo
Airbnb
Easy
Software Engineer Locked

Implement a Removable Nested-List Iterator

Implement an iterator over mutable nested integer lists with repeatable lookahead and a legal once-per-item removal operation. Preserve traversal orde...

Coding & AlgorithmsData Structure Design
35
0
348 people solved
Jul 14, 2026
Arista Networks logo
Arista Networks
Medium
Software Engineer

Distinct Value Pairs With a Target Sum in a Sorted Doubly Linked List

A doubly linked list holds integers sorted in non-decreasing order. Find every pair of nodes whose values add up to a given target. As a follow-up, th...

Coding & AlgorithmsTwo Pointers & Sliding Window
1
0
17 people solved
Jul 11, 2026
Alibaba logo
Alibaba
Medium
Software Engineer

Fixed-Capacity Cache That Evicts the Least Frequently Used Key, Ties by Recency

Implement a key-value cache with a fixed capacity that, when it is full and a new key has to be inserted, evicts the key that has been used the fewest...

Coding & AlgorithmsData Structure DesignLinked Lists
1
0
16 people solved
Oct 7, 2026
Databricks logo
Databricks
Medium
Frontend Engineer Locked

Design a Collaborative Playlist Editor

Design the data model and APIs for a collaborative playlist where stable item IDs allow duplicate songs, removals, moves, and concurrent edits. Explai...

System DesignAPI DesignReal-Time Systems
28
0
224 people solved
Jul 3, 2026
Amazon logo
AmazonGoogleMicrosoft

Also asked at Microsoft, Meta, Bloomberg, Apple, Infosys, TCS, Zoho, Josh Technology, Meesho

Medium
Software Engineer

Relink Odd Positions before Even Positions Stably

Problem Reorder the original singly linked nodes so positions 1,3,5,... come first, followed by positions 2,4,6,... . Preserve relative order within e...

Coding & AlgorithmsLinked Lists
0
0
8 people solved
Google logo
GoogleBloombergAmazon

Also asked at Amazon, Microsoft, Meta

Medium
Software Engineer

Exchange Two Symmetric List Values

Problem Given linked-list head and one-based position k, exchange the values stored in the kth node from the start and the kth node from the end. Retu...

Coding & AlgorithmsLinked ListsTwo Pointers & Sliding Window
0
0
10 people solved
Amazon logo
AmazonGoogleMeta

Also asked at Meta, Microsoft, Bloomberg

Medium
Software Engineer

Insert Linked Nodes into a Sorted Chain

Problem Sort a singly linked list using insertion sort and return its new head. Repeatedly take the next unprocessed node and insert it at a suitable ...

Coding & AlgorithmsSortingLinked Lists
0
0
11 people solved
Imc logo
Imc
Medium
Software Engineer Locked

Answer conceptual true/false and caching questions

This question evaluates understanding of integer representation, caching eviction policies and trade-offs (LFU vs LRU) including communication of anal...

Software Engineering FundamentalsCachingBinary Search
40
1
475 people solved
Jan 20, 2026
Microsoft logo
Microsoft
Medium
Site Reliability EngineerSenior+

Find where two singly linked lists merge, given each as a sequence of node ids

Two singly linked lists can merge: from some node onward they share the very same nodes, so together they form a Y shape. You are given each list as t...

Coding & AlgorithmsLinked Lists
1
0
14 people solved
Jul 30, 2026
Google logo
GoogleMicrosoftAmazon

Also asked at Amazon, Meta, Bloomberg, Apple

Medium
Software Engineer

Maintain a List with Indexed Insertions and Deletions

Problem Implement MyLinkedList using your own singly or doubly linked nodes, indexed from zero. get(index) returns the value or -1 for an invalid inde...

Coding & AlgorithmsLinked ListsData Structure Design
0
0
13 people solved
Reddit logo
Reddit
Hard
Machine Learning Engineer Locked

Solve palindrome and list tasks

This question evaluates proficiency in string algorithms and linked list manipulation, specifically techniques for constructing the shortest palindrom...

Coding & AlgorithmsString AlgorithmsLinked Lists
8
0
139 people solved
Mar 2, 2026
Anthropic logo
Anthropic
Medium
Machine Learning Engineer Locked

Implement an LRU cache

This question evaluates competency in designing efficient key-value caching mechanisms, enforcing capacity constraints and eviction policies while mai...

Coding & AlgorithmsData Structure Design
26
0
407 people solved
Feb 27, 2026
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