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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
Glean logo
Glean
Medium
Software Engineer

Group Words into Transitive Synonym Sets by Shared Two-Words-Before-and-After Context

You are given a list of sentences. Two words are considered synonyms if they appear in the same context: the same two words immediately before them an...

Coding & AlgorithmsGraphsArrays & Strings
5
0
85 people solved
Sep 30, 2026
Glean logo
Glean
Medium
Software Engineer

Implement a Byte-Pair Encoding Tokenizer: Threshold Training, Encode and Decode

Implement a byte-pair encoding (BPE) tokenizer from scratch with three functions: - train(text: str, threshold: int) learns merge rules from text. - e...

Software Engineering FundamentalsArrays & StringsTransformers & Attention
3
0
67 people solved
Sep 30, 2026
Whatnot logo
Whatnot
Easy
Software Engineer

Check Whether a String Can Become a Palindrome by Deleting at Most One Character

Given a string s, return True if s can be made into a palindrome by deleting at most one character, and False otherwise. A palindrome reads the same f...

Coding & AlgorithmsTwo Pointers & Sliding WindowArrays & Strings
5
0
89 people solved
Oct 10, 2026
Microsoft logo
MicrosoftGoogleAmazon

Also asked at Amazon, Zoho, Yandex, Bloomberg, Infosys, Meta, Deshaw, Goldman Sachs, ServiceNow, JPMorgan Chase, Adobe, ByteDance, UiPath, Publicis Sapient, CRED

Medium
Software Engineer Locked

Longest Single-Letter Substring After at Most k Letter Replacements

A string problem: given uppercase letters and a budget of k single-letter changes, find the longest contiguous substring that can be turned into one r...

Coding & AlgorithmsTwo Pointers & Sliding Window
7
0
83 people solved
Google logo
GoogleAmazonMicrosoft

Also asked at Microsoft, Bloomberg, Infosys, Meta, TCS, Apple, TikTok, Oracle, Walmart Labs, Goldman Sachs, IBM, Paytm, Uber, Okta, NVIDIA, PayPal

Medium
Software Engineer

Measure the Longest Consecutive Value Run in Linear Time

Problem Return the length of the longest run of consecutive integer values present in an unsorted array. The values need not be adjacent in the input....

Coding & AlgorithmsArrays & Strings
6
1
38 people solved
Stripe logo
Stripe
Medium
Software Engineer

Calculate Transaction Fees

You are building a payment processor. Each transaction has an amount in cents, a payment type, and a payment status. The platform charges a percentage...

Coding & AlgorithmsArrays & Strings
115
4
2202 people solved
Apr 9, 2026
Mercor logo
Mercor
Medium
Machine Learning Engineer

Decide whether every car can park given preferred spots and forward-only overflow

A one-way street has n parking spots in a row, numbered 0 to n - 1 in the direction of travel. Cars arrive one at a time, in the order given by prefer...

Coding & AlgorithmsSimulation & State Machines
36
0
243 people solved
Sep 25, 2026
IBM logo
IBM
Medium
Software Engineer

Count Employees With Unbroken Renewable Access at the Last Timestamp

An access system grants employees time-limited access. Employee i has a fixed access duration limits[i]. The system receives a log of access settings,...

Coding & AlgorithmsSimulation & State Machines
16
0
176 people solved
Sep 30, 2026
Lyft logo
Lyft
Medium
Software Engineer

Wrapper Over a Paginated Page API That Fetches the Next N Words

You are given an external API that returns content one page at a time, and each page holds a variable number of words. Write a wrapper class around th...

Software Engineering FundamentalsAPI Integration & HTTP ClientsData Structure Design
28
0
211 people solved
Sep 24, 2026
Roblox logo
Roblox
Medium
Software Engineer

Most frequent call stack per thread from enter/exit logs, deeper stacks win ties

A program writes a log of function calls. Each log line records that a thread entered or exited a function. At any moment, each thread has its own cal...

Coding & AlgorithmsStacks & Queues
12
1
118 people solved
Aug 29, 2026
Capital One logo
Capital One
Medium
Software EngineerNew Grad

Count Subarrays Whose Step-by-Step Changes Match an Up, Flat, Down Pattern

You are given an integer array nums of length n and an array pattern of length m whose values are each -1, 0 or 1. Each pattern value describes the re...

Coding & AlgorithmsArrays & Strings
14
0
176 people solved
Sep 27, 2026
Amazon logo
Amazon
Medium
Software EngineerIntern

Max Consecutive Uptime After Repairing One Window of Exactly k Log Entries

A server's health log is a string of 0s and 1s, one character per time step: 1 means the server was up and running normally, and 0 means it had failed...

Coding & AlgorithmsTwo Pointers & Sliding Window
2
0
14 people solved
Oct 29, 2026
Waymo logo
Waymo
Medium
Data Scientist Locked

Average of a List of Integers, Returning 0 for an Empty List

Write a function that returns the arithmetic mean of a list of integers and returns 0 for an empty list. A warm-up from a timed data science assessmen...

Coding & AlgorithmsArrays & Strings
5
1
103 people solved
Sep 10, 2026
Google logo
Google
Easy
Software EngineerIntern

Count Failed, Passed and Honors Exam Results From Percentage Scores

Students take an exam, and each result is a percentage score. Classify every result into one of three bands and count how many results fall into each ...

Coding & AlgorithmsArrays & Strings
1
0
14 people solved
Oct 26, 2026
Capital One logo
Capital One
Medium
Software EngineerNew Grad

Sort Each Adjacent Pair of an Array, Leaving an Odd Last Element in Place

Given an array of integers, sort it by pairs. Split the array into consecutive pairs starting from the first element, (nums[0], nums[1]), (nums[2], nu...

Coding & AlgorithmsArrays & Strings
14
0
218 people solved
Sep 27, 2026
LinkedIn logo
LinkedIn
Easy
Software Engineer

Minimum index distance between two given words in a word list

Given a list of words and two different words that both occur in it, return the smallest distance between a position of the first word and a position ...

Coding & AlgorithmsArrays & Strings
9
0
74 people solved
Oct 4, 2026
NVIDIA logo
NVIDIA
Medium
Software EngineerSenior+

Hash-Partition an Array on the GPU in C++ and Return Partition Offsets

Implement hash partitioning on a GPU in C++. You are given an array of n keys and a number of partitions P; each key belongs to partition hash(key) % ...

Software Engineering FundamentalsGPU Programming
4
0
34 people solved
Oct 5, 2026
Google logo
GoogleAmazonMeta

Also asked at Meta, Microsoft, Bloomberg, Jump Trading

Hard
Software Engineer

Select a Permutation by Its Lexicographic Rank

Problem List the permutations of the digits 1 through n in increasing lexicographic order. Return the permutation at the one-based position k, as a st...

Coding & AlgorithmsMath & Number Theory
3
0
32 people solved
Ramp logo
Ramp
Easy
Frontend Engineer

Build a Wordle Guess Checker with Green, Yellow and Red Letter Feedback

Build a small version of the classic Wordle word game as a browser component. A fixed secret word is checked against what the user types, and each typ...

Software Engineering FundamentalsUI Components & AccessibilityArrays & Strings
8
0
116 people solved
Sep 17, 2026
Glean logo
Glean
Medium
Software EngineerIntern

Shortest Manhattan Distance Between Any X and Any Y in a String or Grid

The interview had two parts. The first gave a string such as "XOXOXXOOYOXO" and asked for the shortest distance between any X and any Y (here 2). The ...

Coding & AlgorithmsGrids & Matrices
5
0
61 people solved
Sep 30, 2026
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