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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
Indeed logo
Indeed
Medium
Software Engineer Locked

Implement Get and Insert in an Unrolled Linked List

Implement indexed get and insert in an unrolled linked list, preserving block capacity, occupancy, sequence order, and split behavior.

Coding & AlgorithmsLinked ListsData Structure Design
6
0
109 people solved
Sep 16, 2026
Amazon logo
Amazon
Medium
Software EngineerSenior+

Deep-Copy a Linked List Whose Nodes Carry Random Pointers, in C

Each node of a singly linked list holds an integer value, a next pointer to the following node, and a random pointer that may point to any node of the...

Software Engineering FundamentalsLinked ListsMemory Management
1
0
7 people solved
Oct 31, 2026
Netflix logo
NetflixAmazonGoogle

Also asked at Google, Microsoft, Oracle, Uber

Easy
Software Engineer Locked

Implement an In-Memory Key-Value Cache With Per-Entry Time Limits

Design a cache with per-entry expiration and implement the JavaScript set, get, and count operations with precise expiry boundaries.

Software Engineering FundamentalsData Structure DesignCaching
15
0
106 people solved
Apple logo
Apple
Medium
Software Engineer

Simulate a Fixed-Capacity Least-Recently-Used Cache over a Stream of Operations

Implement a key-value cache that holds at most capacity entries and, when it is full, evicts the entry that was used least recently. Run the cache ove...

Coding & AlgorithmsData Structure Design
6
0
77 people solved
Sep 17, 2026
Google logo
GoogleAmazonMicrosoft

Also asked at Microsoft, Bloomberg, TCS, Meta, Apple, TikTok, Arista Networks, Snapchat, Infosys, LinkedIn, Morgan Stanley

Medium
Software Engineer

Reorder Existing Nodes from Alternating List Ends

Problem Reorder the existing nodes of a singly linked list by alternating from its beginning and end. If the original node identities are L0,L1,...,Lk...

Coding & AlgorithmsLinked Lists
3
0
25 people solved
Squarepoint logo
SquarepointGoogleMicrosoft

Also asked at Microsoft, Jane Street, Meta, Amazon, Uber, Rippling, Liberty Mutual

Hard
Software Engineer

Maintain Editable Text around a Bounded Cursor

Problem Implement TextEditor, initially containing empty text with its cursor at the beginning. - addText(text) inserts the supplied text at the curso...

Coding & AlgorithmsData Structure DesignArrays & Strings
2
0
42 people solved
AMD logo
AMD
Medium
Software Engineer

C++ Code Reading: Bug in a Linked-List insertAfter and Predicting Polymorphic Output

This round handed out short C++ programs and asked you to read them: find a bug, predict the exact output, and explain why. The exact snippets used in...

Software Engineering FundamentalsProgramming LanguagesDebugging
3
0
39 people solved
Oct 9, 2026
Apple logo
Apple
Medium
Software Engineer

LRU Cache with Fewer Recency Writes and Concurrent Access

Implement a least-recently-used (LRU) cache with a fixed capacity. It supports get(key), which returns the value stored for the key or reports a miss,...

Software Engineering FundamentalsData Structure DesignConcurrency
5
1
55 people solved
Aug 31, 2026
Google logo
GoogleMicrosoftAmazon

Also asked at Amazon, Bloomberg, TCS, Meta, Oracle, Capgemini, McDonalds

Easy
Software Engineer

Keep One Representative of Each Sorted List Value

Problem Given the head of a sorted singly linked list, remove excess copies so each distinct value appears once. Return the head of the resulting sort...

Coding & AlgorithmsLinked Lists
2
0
21 people solved
Citadel Securities logo
Citadel Securities
Medium
Software Engineer

Conflating Quote Queue That Keeps Only the Latest Price per Symbol

A market data feed pushes quotes for stock symbols; each quote carries a symbol and that symbol's latest ask price as an integer. Quotes can arrive fa...

Software Engineering FundamentalsData Structure DesignProgramming Languages
9
0
87 people solved
Sep 11, 2026
Tesla logo
TeslaBloombergGoogle

Also asked at Google, Adobe, Amazon, Meta, Microsoft

Hard
Software EngineerSenior+ Locked

Flatten a Linked List with Nested Side Branches into One Doubly Linked List

A linked list whose nodes may each carry one side branch, with branches nested like a binary tree, must be flattened into a single doubly linked list ...

Coding & AlgorithmsLinked Lists
10
0
82 people solved
ByteDance logo
ByteDance
Hard
Software Engineer

Simulate a fixed-capacity least-recently-used cache over get and put operations

Design a cache with a fixed capacity that evicts the least recently used key when it is full. To make it testable as one function, you receive the cap...

Coding & AlgorithmsData Structure DesignLinked Lists
6
0
48 people solved
Oct 4, 2026
Medium
Software EngineerNew Grad

Simulate a Least-Frequently-Used Cache with Recency Tie-Breaking

This follows a least-recently-used cache problem. Now the fixed-capacity cache, when full, evicts the key that has been used the fewest times, and bre...

Coding & AlgorithmsData Structure Design
1
0
13 people solved
Oct 20, 2026
Google logo
GoogleAmazonTCS

Also asked at TCS, Meta, Microsoft, Apple, Bloomberg, Infosys, TikTok, Nokia, Oracle, Qualcomm, Visa, Yandex, Goldman Sachs, Cisco, NVIDIA, SAP, Paytm, JPMorgan Chase

Easy
Software Engineer

Reverse Linked-Node Order by Iteration and Recursion

Problem Reverse a singly linked list and return the reversed chain's head. Preserve the supplied ListNode pointer interface with val and next fields; ...

Coding & AlgorithmsLinked Lists
1
0
14 people solved
AMD logo
AMD
Medium
Software Engineer

Design and Implement a Fixed-Capacity LRU Cache with Constant-Time Operations

Design and implement a least-recently-used (LRU) cache with a fixed capacity. The interviewer asked follow-up questions while you were writing the cod...

Software Engineering FundamentalsData Structure DesignLinked Lists
2
0
31 people solved
Oct 9, 2026
Apple logo
Apple
Medium
Software Engineer

Count the Nodes in a Chain Reachable Only Through Left and Right Links

A chain of nodes is linked in a line. Each node can reach only its two neighbors, the node on its left and the node on its right; there is no head poi...

Coding & AlgorithmsLinked Lists
7
0
66 people solved
Jul 13, 2026
LinkedIn logo
LinkedIn
Medium
Software Engineer Locked

Find the Node Where Two Singly Linked Lists Merge

Two singly linked lists stored in one successor array may merge at some node and share every node after it. Given both heads, return the first shared ...

Coding & AlgorithmsLinked Lists
7
0
67 people solved
Sep 18, 2026
Optiver logo
OptiverMetaAmazon
Hard
Software Engineer

Implement a Duplicate-Aware Layered Skip List

Problem Implement Skiplist yourself without using built-in libraries. It maintains a sorted multiset through linked-list layers. search(target) report...

Coding & AlgorithmsData Structure DesignLinked Lists
1
0
30 people solved
Uber logo
Uber
Medium
Software Engineer Locked

Return the Earliest ID Seen Exactly Once

Maintain the earliest single-visit ID with counts and queue pruning, handling permanent duplicates, empty results, and strict versus amortized constan...

Coding & AlgorithmsData Structure DesignLinked Lists
9
0
60 people solved
Aug 31, 2026
OpenAI logo
OpenAI
Hard
Software Engineer

Indexed Vector as a Linked List with Checkpoints Every k Nodes

Implement a simplified vector: an ordered, dynamically sized sequence of strings accessed by integer position. "Vector" here means a vector in the sen...

Software Engineering FundamentalsLinked ListsData Structure Design
10
0
73 people solved
Jul 29, 2026
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