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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
1.5k
Companies
980
Updated
11.12.2026
1.5k 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
Databricks logo
Databricks
Hard
Software EngineerNew Grad

Implement streaming RLE and bit-packed codec

You are implementing a simple compression scheme for sequences of 32‑bit signed integers. The codec should support two encoding strategies: 1. Run‑Len...

Coding & AlgorithmsData Structure DesignBit Manipulation
99
0
1308 people solved
Dec 10, 2025
Hudson River Trading logo
Hudson River Trading
Hard
Software EngineerNew Grad

Implement Order Modification Feature

You are given an existing C++ trading system with a client/server architecture. The current system already supports two request types: - AddOrder(orde...

Coding & AlgorithmsCode Quality & MaintainabilityAPI Design
51
0
428 people solved
Mar 13, 2026
Infosys logo
InfosysGoogleApple

Also asked at Apple, Microsoft, Amazon, TikTok, Citadel

Medium
Software Engineer

Trade Repeatedly with a Fee per Completed Transaction

Problem Given daily prices and a fee, maximize total profit from any number of completed buy/sell transactions. Hold at most one share at a time and s...

Coding & AlgorithmsDynamic Programming
1
0
17 people solved
Capital One logo
Capital One
Hard
Machine Learning Engineer Locked

Count Pairs of Numbers That Become Equal After at Most One Digit Swap

Given a list of integers, count the index pairs whose values are equal or become equal after swapping two digits inside one of the two numbers, where ...

Coding & AlgorithmsArrays & Strings
4
0
80 people solved
Sep 3, 2026
Plaid logo
Plaid
Medium
Software Engineer Locked

Count Completed Jobs in a Serial Single-Worker Pipeline

Calculate how many jobs finish before a deadline in a serial, stage-gated, single-worker pipeline. The prompt tests cumulative-time reasoning, partial...

Coding & AlgorithmsSimulation & State MachinesArrays & Strings
41
0
341 people solved
Jul 13, 2026
Confluent logo
Confluent
Medium
Software EngineerSenior+

Document Search: Exact Word Match, Non-Adjacent Phrase Match and AND/OR Queries

You are given a collection of documents, each with an integer id and its text. Build a search component over them. The interviewer adds requirements o...

Software Engineering FundamentalsData Structure DesignParsing & Interpreters
2
0
47 people solved
Aug 29, 2026
Attentive logo
Attentive
Medium
Software EngineerSenior+

Return Log Entries Within an Inclusive Time Range From a Sorted Log

You are given a log that has already been loaded into memory as a list of entries. Each entry is a pair (timestamp, message), where timestamp is an in...

Coding & AlgorithmsBinary Search
8
0
63 people solved
Sep 24, 2026
Headlands logo
Headlands
Medium
Data Scientist Locked

Minimum Character Replacements So No Two Adjacent Characters Are Equal

Given a string of lowercase letters, find the minimum number of single-position replacements needed so that no two adjacent characters are equal. It t...

Coding & AlgorithmsGreedyArrays & Strings
7
0
82 people solved
Aug 30, 2026
Google logo
Google
Medium
Software Engineer AI

Implement Checksums and Feature Rollout Evaluation

Complete the following two coding tasks in a 90-minute online assessment. An AI coding assistant may be available, but the submitted code must pass th...

Coding & AlgorithmsGraphsDebugging
38
0
318 people solved
Apr 30, 2026
Google logo
GoogleWhatnotAmazon

Also asked at Amazon, Bloomberg, Meta, Grammarly, Apple, Microsoft, Oracle, JPMorgan Chase, Deloitte, Cisco, Ripple, Geico

Easy
Software Engineer

String Remaining After Equal-Neighbor Erasure

Problem Starting with lowercase string s, repeatedly erase an adjacent pair of equal letters until no such pair remains. Return the final string. The ...

Coding & AlgorithmsStacks & QueuesArrays & Strings
2
0
20 people solved
Google logo
GoogleAmazonBloomberg

Also asked at Bloomberg, Meta, Microsoft, Infosys, TCS, Apple, Purestorage

Easy
Software Engineer

Find an Index by Halving a Sorted Range

Problem Search the strictly increasing array nums for target. Return its zero-based index if present, otherwise -1. The search must take O(log n) time...

Coding & AlgorithmsBinary Search
1
0
19 people solved
Pinterest logo
Pinterest
Medium
Software Engineer Locked

Remove and Compact a Parent-Index Forest

Remove a node and all descendants from a parent-index forest, preserve surviving order, compact indices, and rewrite every surviving parent reference ...

Coding & AlgorithmsTreesArrays & Strings
37
2
405 people solved
Aug 27, 2026
Snapchat logo
Snapchat
Medium
Machine Learning Engineer

Evaluate an Integer Arithmetic Expression String With Operator Precedence

Given a string s that holds a valid arithmetic expression, return its integer value. The expression contains non-negative integers, the binary operato...

Coding & AlgorithmsParsing & InterpretersStacks & Queues
5
0
63 people solved
Sep 12, 2026
Uber Freight logo
Uber Freight
Medium
Software Engineer

Largest Rider Group Where Every Rider's Companion-Count Limits Hold

A car can take a group of riders on a shared trip. There are N riders, and each rider has two limits: rider i is willing to share the trip with at lea...

Coding & AlgorithmsArrays & StringsIntervals & Scheduling
2
1
21 people solved
Sep 25, 2026
Microsoft logo
Microsoft
Medium
Software Engineer Locked

Maximize Equal Array Length After Contiguous Sum Merges

Find the maximum length of equal arrays obtainable by merging adjacent positive values into their sums, or report that equality is impossible.

Coding & AlgorithmsTwo Pointers & Sliding WindowArrays & Strings
11
0
147 people solved
Sep 5, 2026
Reddit logo
Reddit
Medium
Software Engineer Locked

Implement a Stateful Chatter Message Store

Design a stateful message store that appends ordered batches, saves current data, returns bounded neighborhoods, merges overlapping reads, and edits t...

Software Engineering FundamentalsData Structure DesignArrays & Strings
20
0
200 people solved
Jul 30, 2026
Google logo
GoogleAmazonMeta

Also asked at Meta, Bloomberg, Microsoft, TCS, Arista Networks, Netflix, Accenture, Adobe, Zoho, Airbnb, OnlyFans

Easy
Software Engineer

Detect Equal Values within an Index Radius

Problem Return whether two different array positions hold equal values and are at most k indices apart. Both value equality and the index-distance bou...

Coding & AlgorithmsArrays & StringsTwo Pointers & Sliding Window
0
0
15 people solved
Capital One logo
Capital One
Medium
Software Engineer Locked

Top Two Teams by Points, Then Goal Difference, Then Goals Scored

Given parallel arrays of wins, draws, goals scored and goals conceded for each team, compute points as three per win plus one per draw and return the ...

Coding & AlgorithmsSorting
14
0
97 people solved
Sep 17, 2026
Google logo
GoogleEPAM SystemsBloomberg

Also asked at Bloomberg, Meta, Amazon, Microsoft, Uber, Accenture

Hard
Software Engineer

Build the Shortest Palindrome by Prepending Only

Problem Add characters only in front of s to make it a palindrome. Return the shortest resulting palindrome. Preserve all existing characters and thei...

Coding & AlgorithmsString AlgorithmsArrays & Strings
0
0
13 people solved
Google logo
GoogleAmazonMeta

Also asked at Meta, Microsoft, Bloomberg, TCS, Netflix, Capgemini, IBM, Infosys, Apple, Accenture, Zoho, NVIDIA, Visa

Easy
Software Engineer

Detect Whether Any Integer Value Repeats

Problem Return true if any integer value appears at least twice in nums. Return false when all values are distinct. Repeated positions need not be adj...

Coding & AlgorithmsArrays & Strings
0
0
16 people solved
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