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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
435
Companies
980
Updated
11.12.2026
435 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
Google logo
GoogleAmazonMicrosoft

Also asked at Microsoft, Meta, Infosys, Visa, Apple, Bloomberg, JPMorgan Chase, Deloitte, TCS, Spotify, Yandex, Goldman Sachs, Cognizant, IBM, Oracle, Morgan Stanley, Zoho, Tesla, TikTok, Walmart Labs, NVIDIA, Turing, EPAM Systems, Netflix, Cisco, Salesforce, ServiceNow, Accenture

Medium
Software Engineer

Measure the Longest Segment of Distinct Characters

Problem Given the string text, return the greatest length of a contiguous substring whose characters are all different. Return a length, not the subst...

Coding & AlgorithmsTwo Pointers & Sliding WindowArrays & Strings
73
8
532 people solved
Palantir logo
Palantir
Medium
Software EngineerIntern

Daily Totals of Several Stocks' Prices with Missing Days Carried Forward

Several companies report stock prices, each only on some days. For every date that appears anywhere in the input, compute the total of all companies' ...

Coding & AlgorithmsArrays & StringsSorting
25
0
177 people solved
Oct 29, 2026
Amazon logo
AmazonGoogleMicrosoft

Also asked at Microsoft, Meta, TCS, Bloomberg, IBM, Adobe, Goldman Sachs, Yandex, Cognizant, Infosys, Tinkoff, Visa, Cisco, Oracle, TikTok, Deloitte, Apple, Salesforce, Walmart Labs, EPAM Systems, Zoho, Uber

Medium
Software Engineer

Return a Longest Palindromic Slice

Problem Given the string text, return a contiguous substring of maximum length whose characters read identically from left to right and from right to ...

Coding & AlgorithmsArrays & StringsTwo Pointers & Sliding Window
27
3
301 people solved
OpenAI logo
OpenAI
Hard
Software Engineer

Chat event aggregator: sliding-window message counts and active chats per user

Users can hold conversations in many separate chat sessions. A stream of events describes their activity, and you are asked to build an in-memory aggr...

Software Engineering FundamentalsData Structure DesignStacks & Queues
7
0
141 people solved
Oct 19, 2026
Sierra logo
Sierra
Medium
Software Engineer

Conversation Agent History: Paginated Fetching, Then Token-Limit Compaction

You are building the message-history layer of a conversation agent: the component that holds the conversation's messages and hands them to the languag...

Software Engineering FundamentalsAPI Integration & HTTP ClientsLLM Applications
53
0
406 people solved
Oct 6, 2026
Lyft logo
Lyft
Medium
Software Engineer

Shortest Substring Containing All Pattern Characters with Repeats

Given a string s and a pattern t, return the shortest contiguous substring of s that contains every character of t, counting repeats: if a character a...

Coding & AlgorithmsTwo Pointers & Sliding Window
4
0
75 people solved
Oct 28, 2026
OpenAI logo
OpenAI
Medium
Software Engineer

Sliding-Window Chat Analytics: Recent Counts, Live Sessions, Out-of-Order Events

Build an in-memory, single-threaded analytics service for chat sessions. It consumes a real-time stream of interaction log records, and each record ha...

Software Engineering FundamentalsData Structure DesignStacks & Queues
79
2
571 people solved
Oct 10, 2026
Google logo
Google
Hard
Machine Learning Engineer

Group Consecutive Piano Notes into Hand Positions and Assign Fingers

A pianist plays a melody with one hand. Notes are integers, where consecutive integers are adjacent keys. The hand's five fingers cover five adjacent ...

Coding & AlgorithmsArrays & Strings
2
0
32 people solved
Nov 10, 2026
Sierra logo
Sierra
Medium
Software Engineer

Fetch Every Page from a Data API, Then Compact Records to a Token Budget

This coding screen has two parts that build on each other: first collect all the data an API will return, then shrink the collected data to fit a toke...

Software Engineering FundamentalsTwo Pointers & Sliding WindowAPI Integration & HTTP Clients
49
0
384 people solved
Oct 1, 2026
DoorDash logo
DoorDash
Medium
Software Engineer

Dasher Pay from Concurrent Orders with Double-Pay Time Windows

A Dasher (a delivery driver) is paid for the time they spend carrying orders, and the pay grows with the number of orders they carry at once. During a...

Coding & AlgorithmsIntervals & Scheduling
36
2
289 people solved
Oct 7, 2026
Google logo
GoogleAmazonMicrosoft

Also asked at Microsoft, Bloomberg, Oracle, Meta, Cloudflare, NVIDIA, Infosys, TCS, Apple, Accenture, DoorDash, Yandex, ServiceNow, Capgemini

Medium
Software Engineer

Find All Distinct Four-Value Target Groups

Problem Given the integer array values and integer goal, return all distinct groups of four values whose sum equals goal, using four different positio...

Coding & AlgorithmsTwo Pointers & Sliding WindowSorting
9
0
111 people solved
Google logo
GoogleAmazonBloomberg

Also asked at Bloomberg, Meta, Microsoft, TCS, Flipkart, Goldman Sachs, Infosys, IBM, Cisco, Accenture, Oracle, Zoho, TikTok, NVIDIA, Yandex, Walmart Labs, Apple, ServiceNow, Capital One, SAP

Medium
Software Engineer

Choose Vertical Sides for the Greatest Water Capacity

Problem The array heights describes upright lines at integer horizontal positions. Line i extends from (i, 0) to (i, heights[i]). Choose two different...

Coding & AlgorithmsTwo Pointers & Sliding Window
6
1
102 people solved
Capital One logo
Capital One
Medium
Software Engineer

Count Pairs of Points Within 2 Units on Both Axes

You are given a list of points on a plane with integer coordinates. Two points intersect when their x-coordinates differ by at most 2 and their y-coor...

Coding & AlgorithmsArrays & Strings
19
0
165 people solved
Oct 16, 2026
DoorDash logo
DoorDash
Hard
Software Engineer

Courier Pay From Overlapping Deliveries With Peak-Window Multipliers

A delivery courier accepts orders and later delivers them, and may carry several orders at the same time. The courier is paid for every minute each or...

Coding & AlgorithmsIntervals & Scheduling
61
3
546 people solved
Oct 1, 2026
NVIDIA logo
NVIDIA
Easy
Software Engineer

Collect CPU, Memory and Disk Metrics, POST Them as JSON, and Add a Threshold Check

You are given a virtual machine inside an online coding environment. Instead of an algorithm puzzle, the task is practical: write a program by hand th...

Software Engineering FundamentalsObservabilityAPI Integration & HTTP Clients
13
0
222 people solved
Oct 7, 2026
Snowflake logo
Snowflake
Medium
Software Engineer

Reverse a Character Array In Place with Constant Extra Memory

Reverse a string given as an array of its characters. The reversal must happen in place: rearrange the elements of the given list itself, using only a...

Coding & AlgorithmsTwo Pointers & Sliding WindowArrays & Strings
9
0
103 people solved
Oct 17, 2026
Optiver logo
Optiver
Medium
Software Engineer

Fastest 1000 Meters: Max Average Speed from 5-Second Distance Splits

A runner's workout is recorded as a list of integers distances, where distances[i] is the number of meters covered during the i-th consecutive 5-secon...

Coding & AlgorithmsTwo Pointers & Sliding Window
46
4
597 people solved
Sep 26, 2026
Elevenlabs logo
Elevenlabs
Medium
Software Engineer

Longest Spoken Prefix with Repeated Words: Review an LCS Version, Then Rewrite It

A voice agent receives a script from a language model, want_to_speak, and produces a transcript of what it has actually said, spoken_text. The script ...

Software Engineering FundamentalsTwo Pointers & Sliding WindowCode Quality & Maintainability
0
0
16 people solved
Nov 8, 2026
Palantir logo
PalantirLinkedInAndurilGoogle

Also asked at Anduril, Google

Medium
Software Engineer

Preprocess Word Positions for Repeated Distance Queries

Problem Implement WordDistance(wordsDict) and shortest(word1,word2). Each shortest call returns the least index distance between occurrences of its tw...

Coding & AlgorithmsData Structure DesignTwo Pointers & Sliding Window
9
0
134 people solved
Pinterest logo
Pinterest
Easy
Machine Learning EngineerIntern

Length of the Longest Run of One Repeated Character in a String

Given a string, return the length of its longest run: the longest stretch of consecutive positions that all hold the same character. Function Signatur...

Coding & AlgorithmsArrays & Strings
5
0
57 people solved
Oct 14, 2026
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