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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
LinkedIn logo
LinkedIn
Medium
Software Engineer Locked

Can You Place N Objects?

This question evaluates array traversal, adjacency-constraint reasoning, and greedy placement intuition, emphasizing handling of boundary conditions a...

Coding & AlgorithmsGreedyArrays & Strings
15
0
123 people solved
Mar 22, 2026
Amplitude logo
Amplitude
Medium
Software Engineer

Implement lossless dictionary encoding and decoding

Dictionary encoding is a lossless compression technique for a list of tokens. You are given an input string consisting of words separated by commas, e...

Coding & AlgorithmsParsing & InterpretersArrays & Strings
6
0
103 people solved
Feb 25, 2026
Amazon logo
AmazonBloombergMeta

Also asked at Meta, Google, Microsoft

Easy
Software Engineer

Largest Odd Slice of a Decimal String

Problem Given a decimal digit string num with no leading zeros, return the numerically largest odd integer represented by one nonempty contiguous subs...

Coding & AlgorithmsArrays & StringsGreedy
1
0
9 people solved
Amazon logo
AmazonGoogleMetaMicrosoft

Also asked at Meta, Microsoft

Medium
Software Engineer

Equalize All Mirrored Pair Sums

Problem The array nums has even length. One move replaces one entry by an integer in [1,limit]. Make every mirrored pair (i,n-1-i) have the same sum, ...

Coding & AlgorithmsArrays & Strings
1
0
10 people solved
Meta logo
MetaGoogleAmazonBloomberg

Also asked at Amazon, Bloomberg

Medium
Software Engineer

Largest Selection That Forms a Symmetric Power Pattern

Largest Selection That Forms a Symmetric Power Pattern You are given an array nums of positive integers. Select some of its elements, using each array...

Coding & AlgorithmsMath & Number TheoryArrays & Strings
0
0
10 people solved
Google logo
GoogleMetaAmazonBloomberg

Also asked at Amazon, Bloomberg

Easy
Software Engineer

Return Every Most-Frequent Value in a Binary Search Tree

Return Every Most-Frequent Value in a Binary Search Tree Given the root of a binary search tree that may contain duplicates, return all values that oc...

Coding & AlgorithmsTrees
0
0
6 people solved
Microsoft logo
Microsoft
Hard
Software Engineer

Count Nondecreasing Arrays with Prescribed Digit Sums

Count Nondecreasing Arrays with Prescribed Digit Sums You are given an integer array digitSum of length n. Count the distinct integer arrays arr of th...

Coding & AlgorithmsDynamic ProgrammingMath & Number Theory
0
0
8 people solved
Google logo
GoogleInfosys
Medium
Software Engineer

Longest Subsequence with a Nonzero XOR

Problem Given an integer array nums, return the greatest length of a subsequence whose bitwise XOR is nonzero. If no such subsequence exists, return 0...

Coding & AlgorithmsBit ManipulationArrays & Strings
0
0
11 people solved
Meta logo
Meta
Medium
Software EngineerSenior+

Group Lowercase Strings into Families Related by a Uniform Letter Shift

Shifting a string of lowercase letters moves every character forward by the same number of places in the alphabet, wrapping from z back to a. Shifting...

Coding & AlgorithmsArrays & Strings
1
0
16 people solved
Apr 1, 2026
DoorDash logo
DoorDash
Medium
Software Engineer

Calculate Courier Earnings

Design a function to calculate total courier pay from a set of delivery orders. Assume time is represented as integer minutes, and intervals are half-...

Coding & AlgorithmsIntervals & SchedulingSorting
25
0
185 people solved
Jan 9, 2026
Google logo
GoogleMicrosoftBloomberg

Also asked at Bloomberg, Amazon, Meta, CRED

Easy
Software Engineer

Count Occurrences of the Most Frequent Values

Count Occurrences of the Most Frequent Values You are given an array nums of positive integers. A value's frequency is the number of times it occurs i...

Coding & AlgorithmsArrays & Strings
0
0
9 people solved
Apple logo
AppleGoogle
Medium
Software Engineer

Values Appearing Alone Without Consecutive Neighbors

Problem A value x is lonely if it occurs exactly once in nums and neither x - 1 nor x + 1 occurs anywhere in the array. Return every lonely value, in ...

Coding & AlgorithmsArrays & Strings
1
0
10 people solved
Roblox logo
Roblox
Hard
Software Engineer

Rank queries by prefix, frequency, and time

You are given three arrays of the same length n: - queries[i]: a non-empty string representing the text of the i-th query. - timestamps[i]: an integer...

Coding & AlgorithmsString Algorithms
44
0
392 people solved
Oct 14, 2025
Amazon logo
AmazonGoogleMicrosoftBloomberg

Also asked at Microsoft, Bloomberg

Easy
Software Engineer

GCD of the Two Extreme Array Values

Problem Return the greatest common divisor of the minimum and maximum entries in nums. This is the largest positive integer dividing both of those two...

Coding & AlgorithmsMath & Number Theory
1
0
10 people solved
Roblox logo
Roblox
Easy
Machine Learning Engineer

Find the Most Frequent Log Call

You are given a sequence of application log entries. Each entry contains the name of a function or API call made by the system. Write a function that ...

Coding & AlgorithmsArrays & Strings
22
0
178 people solved
Feb 1, 2026
Amazon logo
AmazonGoogleMicrosoft
Hard
Software Engineer

Character After Special String Commands

Character After Special String Commands You are given a string s containing lowercase English letters and the commands *, #, and %, together with a ze...

Coding & AlgorithmsArrays & StringsSimulation & State Machines
0
0
8 people solved
Amazon logo
AmazonGoogleMicrosoft

Also asked at Microsoft, Deshaw, Meta

Hard
Software Engineer

Minimize the Cost of Merging Exactly K Adjacent Piles at a Time

Problem Piles in stones remain in row order. Each move merges exactly k consecutive current piles into one and costs their combined stone count. Retur...

Coding & AlgorithmsDynamic Programming
0
0
6 people solved
Capital One logo
Capital One
Medium
Machine Learning Engineer Locked

Count ordered fragment pairs forming a password

This question evaluates proficiency with string manipulation, handling duplicate fragments, and combinatorial reasoning about ordered index pairs that...

Coding & AlgorithmsArrays & Strings
16
0
109 people solved
Jan 20, 2026
Imc logo
Imc
Medium
Software Engineer

Analyze time complexity and threading trade-offs

Answer the following conceptual questions. 1) Worst-case time complexity State the worst-case time complexity (Big-O) for each operation and briefly j...

Software Engineering FundamentalsConcurrency
40
0
302 people solved
Nov 3, 2025
Upstart logo
Upstart
Medium
Software Engineer Locked

Implement four string-processing functions

This question evaluates string-processing and list-manipulation skills, including character membership testing and sequence filtering, reflecting comp...

Coding & AlgorithmsArrays & Strings
18
0
142 people solved
Jan 5, 2026
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