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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
OpenAI logo
OpenAI
Hard
Software EngineerNew Grad

Follow One-Way Links to the Endpoint Node or the Last Node Before a Loop Closes

A simple network is made of nodes joined by one-way links. Each node links to at most one other node, in a single forward direction. Starting from a g...

Coding & AlgorithmsGraphs
36
0
591 people solved
Oct 6, 2026
OpenAI logo
OpenAI
Hard
Software EngineerNew Grad

Microorganism Eating Simulation: Largest Survivor After Left-to-Right Rounds

Several microorganisms are lined up in a row. Each one belongs to a family, identified by a letter, and has a size, a positive integer. A microorganis...

Coding & AlgorithmsSimulation & State Machines
46
0
329 people solved
Oct 6, 2026
Pinterest logo
Pinterest
Medium
Software EngineerSenior+

Review AI-Generated LRU and LFU Cache Changes

Review AI-Generated LRU and LFU Cache Changes You are modifying an existing codebase with an AI coding assistant. Add an LRU cache and an LFU cache, c...

Software Engineering FundamentalsAI-Assisted DevelopmentData Structure Design
180
1
2113 people solved
Sep 1, 2026
Bloomberg logo
BloombergAmazonGoogle

Also asked at Google, Microsoft, Meta, Arista Networks, Revolut, Infosys, Oracle, Nutanix, Apple, ByteDance, TikTok, NVIDIA, Palo Alto Networks

Medium
Software Engineer

Reverse an Inclusive Segment of List Nodes

Problem Reverse the nodes from position left through position right in a singly linked list, leaving the rest in its original order. Positions are one...

Coding & AlgorithmsLinked Lists
7
0
70 people solved
Microsoft logo
Microsoft
Easy
Software Engineer

Build a Fixed-Capacity Least-Recently-Used Cache with Constant-Time Get and Put

Implement a least-recently-used (LRU) cache that holds at most capacity entries. It supports two operations: - get(key): return the value stored for k...

Software Engineering FundamentalsData Structure DesignLinked Lists
8
2
76 people solved
Oct 14, 2026
Google logo
GoogleAmazonMeta

Also asked at Meta, Bloomberg, Microsoft, Symantec, Apple, TCS, Accenture, Morgan Stanley, Yandex, Qualcomm, Tinkoff, Oracle, TikTok

Medium
Software Engineer

Remove a Linked Node by Its Distance from the Tail

Problem Given the head of a singly linked list and an integer n, remove the node that is n positions from the tail, counting the tail as position 1. R...

Coding & AlgorithmsLinked ListsTwo Pointers & Sliding Window
4
0
55 people solved
OpenAI logo
OpenAI
Hard
Software Engineer

Implement malloc and free over Fixed Memory, Then Make Both Logarithmic

Implement a simple memory allocator with malloc and free operations in Python. The interviewer provides test cases that allocate blocks, free some of ...

Software Engineering FundamentalsMemory ManagementData Structure Design
16
0
205 people solved
Oct 4, 2026
Replit logo
Replit
Hard
Software EngineerNew Grad

Convert Editor Keystrokes into a Minimal Insert, Delete and Skip Operation List

A text editor records an editing session as an initial document and a list of keystrokes. The cursor starts at position 0, before the first character ...

Coding & AlgorithmsSimulation & State Machines
4
0
39 people solved
Oct 22, 2026
Google logo
GoogleAmazonMicrosoft

Also asked at Microsoft, Bloomberg, TikTok, Meta, Zopsmart, Palo Alto Networks, Qualcomm, Salesforce, Goldman Sachs, Arista Networks, Infosys, Cisco, Josh Technology, Apple, Walmart Labs, Sigmoid, Uber

Hard
Software Engineer

Reverse Complete Groups of Linked Nodes

Problem Given a singly linked list's head and a positive integer k, reverse the order of the nodes within each consecutive complete group of k nodes. ...

Coding & AlgorithmsLinked Lists
5
0
36 people solved
Anthropic logo
Anthropic
Medium
Software Engineer Locked

Fix a Buggy LRU Cache, Then Make It Durable with a Write-Ahead Log

Debug a flawed least-recently-used cache by finding each bug with a reproducing call sequence and fixing it, then make the cache durable across crashe...

Software Engineering FundamentalsData Structure DesignDebugging
37
1
269 people solved
Sep 18, 2026
LinkedIn logo
LinkedIn
Medium
Software Engineer

Implement an LRU Cache, Then Add TTL Expiry and Thread Safety

Implement an in-memory cache with a fixed capacity that evicts the least recently used entry when it is full. Then extend it in two steps: entries tha...

Software Engineering FundamentalsData Structure DesignConcurrency
23
0
163 people solved
Sep 24, 2026
Walmart Labs logo
Walmart Labs
Easy
Software Engineer

Splice a Second Linked List into the First Between Positions n and y

You are given two singly linked lists. Splice the second list into the first: the n-th node of the first list links to the head of the second list, an...

Coding & AlgorithmsLinked Lists
1
0
13 people solved
Nov 6, 2026
Citadel Securities logo
Citadel Securities
Medium
Software Engineer

In-Memory Order Book with Price-Time Order, Level Aggregation and Order Cancel

Implement an in-memory order book for a single instrument. Orders arrive one at a time, each with a unique order id, a side (bid or ask), a price and ...

Software Engineering FundamentalsData Structure DesignTrading Systems
17
0
151 people solved
Sep 11, 2026
Snowflake logo
Snowflake
Easy
Software Engineer

Nearest Person-to-Cake Distance and Greedy Closest-Pair Assignment Total

You are given an array A of length n in which every element is 0 (an empty spot), 1 (a person) or 2 (a cake). The distance between positions i and j i...

Coding & AlgorithmsHeaps & Priority QueuesArrays & Strings
2
0
23 people solved
Oct 21, 2026
Bnsf logo
Bnsf
Medium
Software Engineer

Simulate a Fixed-Capacity Cache With Least-Recently-Used Eviction

A cache holds at most capacity key-value pairs. When a new key must be inserted into a full cache, the cache first evicts the key that was used least ...

Coding & AlgorithmsData Structure Design
1
0
13 people solved
Oct 30, 2026
NVIDIA logo
NVIDIA
Medium
Software Engineer Locked

Streaming Top-K Frequent Elements with O(1) Updates Instead of a Heap

Design a structure that consumes an unbounded stream and reports the K most frequent elements at any time, first with a heap and then with constant-ti...

Software Engineering FundamentalsData Structure DesignHeaps & Priority Queues
11
0
107 people solved
Sep 15, 2026
Google logo
GoogleAmazonLyft

Also asked at Lyft, Meta, Microsoft, Bloomberg, TCS, Apple

Medium
Software Engineer

Build a Balanced Tree from an Ascending Linked List

Problem Convert an ascending singly linked list into a height-balanced binary search tree and return the tree's root. Preserve every input value occur...

Coding & AlgorithmsTreesLinked Lists
3
0
22 people solved
Datologyai logo
Datologyai
Hard
Software Engineer

Cursor-Based Text Editor: Typing, Backspace, and Four-Way Cursor Movement

Implement a TextEditor class that holds a text buffer and a single cursor. The editor starts empty, with the cursor at position 0. It supports three o...

Software Engineering FundamentalsData Structure Design
4
0
43 people solved
Oct 14, 2026
Nuro logo
Nuro
Hard
Software Engineer

C++ K-Way Merge of Timestamped Records with Clean Class Design and Hand-Written Tests

This C++ coding round was a variant of the classic task of merging k sorted linked lists into one sorted list. In the variant, every element carries a...

Software Engineering FundamentalsHeaps & Priority QueuesProgramming Languages
3
0
40 people solved
Oct 7, 2026
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
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