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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
509
Companies
980
Updated
11.08.2026
509 Questions 980 Companies11.08.2026
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
Uber logo
UberGoogleSnowflake

Also asked at Snowflake, Meesho, Meta, Amazon, Bloomberg, Snapchat

Hard
Software Engineer

Build a Target from Increasing Dictionary Columns

Problem The strings in words have a common length. Build target from left to right by choosing a matching character from any word at a column strictly...

Coding & AlgorithmsDynamic ProgrammingArrays & Strings
1
0
12 people solved
Microsoft logo
MicrosoftUberSalesforce

Also asked at Salesforce, Amazon, PhonePe, Meesho, MathWorks, Google, Oracle, PayPal, Cashfree

Hard
Software Engineer

Find Each Node’s Minimum Reversals to Reach the Whole Tree

Find Each Node’s Minimum Reversals to Reach the Whole Tree A simple directed graph has n nodes labeled from 0 through n - 1. If its edges were made bi...

Coding & AlgorithmsTreesDynamic Programming
0
0
8 people solved
Coinbase logo
Coinbase
Medium
Software Engineer

Fee-Maximizing Block Assembly from a Mempool with Child-Pays-For-Parent

In cryptocurrency mining, a miner places transactions into a candidate block. Each block has a fixed size B = 100. At any point in time, the transacti...

Software Engineering FundamentalsGreedyGraphs
8
0
65 people solved
May 8, 2026
Amazon logo
AmazonGoogleIBM

Also asked at IBM, Oracle, Accenture

Hard
Software Engineer

Fewest Insertions Needed for a Palindrome

Problem Insert any character at any string position in one operation. Return the minimum operations required to turn s into a palindrome, a string equ...

Coding & AlgorithmsDynamic ProgrammingArrays & Strings
0
0
11 people solved
Instacart logo
Instacart
Medium
Software Engineer Locked

Specify the Lowest Price Across Percentage and Buy-X-Get-Y Discounts

Clarify percentage and buy-x-get-y pricing rules, then reason about the cheapest legal discount combination, quantity thresholds, interactions, and ro...

Software Engineering FundamentalsDynamic Programming
2
0
37 people solved
Sep 11, 2026
Roblox logo
Roblox
Medium
Data Scientist

Optimize bread-factory pipeline for max profit

You can assemble a production line by choosing modules of three types: Mixers, Ovens, Packers. Each module i has (type, build_cost_i, throughput_i uni...

Coding & AlgorithmsDynamic ProgrammingGraphs
17
1
225 people solved
Oct 13, 2025
Flipkart logo
FlipkartAmazonPayPal

Also asked at PayPal, PhonePe, Meta, Microsoft, Deshaw

Medium
Software Engineer

Propagate the Quietest Known Richer Person

Problem People have distinct wealth and distinct quiet values. richer rows [a,b] assert that a is wealthier than b, and all assertions are logically c...

Coding & AlgorithmsGraphsDynamic Programming
1
0
11 people solved
Infosys logo
InfosysMicrosoft
Medium
Software Engineer

Keep the Longest Subsequence with Bounded Alphabet Gaps

Problem Choose a subsequence of lowercase s such that every two neighboring retained letters differ by at most k in ordinary alphabet position. Return...

Coding & AlgorithmsDynamic ProgrammingArrays & Strings
0
0
9 people solved
Visa logo
VisaGoogleMicrosoft

Also asked at Microsoft, Citadel, Millennium, Amazon, Uber, Atlassian, PhonePe, Dialpad

Hard
Software Engineer

Count Five-Position Palindromes in a Digit String

Problem Count subsequences of digit string s with exactly five characters that form a palindrome. Different increasing choices of indices count separa...

Coding & AlgorithmsDynamic ProgrammingArrays & Strings
1
0
12 people solved
Google logo
GoogleBarclaysTeradata

Also asked at Teradata, Zeta Global, Meta, Microsoft, Amazon, PhonePe

Hard
Software Engineer

Maximize the Score from Removing Equal-Color Runs

Problem Given the sequence boxes, repeatedly remove a contiguous nonempty run of k boxes of one color and earn k*k points. Remaining boxes close the g...

Coding & AlgorithmsDynamic Programming
0
0
12 people solved
Google logo
GoogleMetaMicrosoft

Also asked at Microsoft, Oracle, SoFi

Hard
Software Engineer

Select the Most Disjoint Palindromic Substrings of Sufficient Length

Problem Choose non-overlapping contiguous substrings of lowercase s. Every selected substring must be a palindrome and have length at least k. Return ...

Coding & AlgorithmsDynamic ProgrammingArrays & Strings
0
0
9 people solved
Google logo
GoogleMetaAmazon

Also asked at Amazon, Darwinbox, Bloomberg

Hard
Software Engineer

Recognize Recursive Split-and-Swap String Transformations

Problem A string can be scrambled recursively as follows. A one-character string stays as it is. For a longer string, choose a split into two nonempty...

Coding & AlgorithmsDynamic ProgrammingBacktracking & Recursion
0
0
12 people solved
Amazon logo
AmazonMicrosoftMeesho

Also asked at Meesho, Google, Deutsche Bank

Hard
Software Engineer

Split All Values into Two Equal-Average Groups

Problem Assign every occurrence in nums to one of two nonempty groups. Return whether the groups can have exactly equal arithmetic means. The grouping...

Coding & AlgorithmsDynamic ProgrammingMath & Number Theory
0
0
11 people solved
Amazon logo
AmazonGoogleBloomberg

Also asked at Bloomberg, Sprinklr, Meta

Hard
Software Engineer

Choose Up to Four Non-overlapping Intervals

Problem You are given intervals, where intervals[i] = [l_i, r_i, weight_i] describes a closed interval from l_i to r_i and its positive weight. Choose...

Coding & AlgorithmsDynamic ProgrammingIntervals & Scheduling
1
0
11 people solved
Google logo
GoogleLinkedInOracle

Also asked at Oracle, Amazon, Flipkart, Salesforce

Medium
Software Engineer

Group Binary Tree Leaves by Removal Round

Group Binary Tree Leaves by Removal Round Given the root of a binary tree, repeatedly collect all current leaves, then remove those leaves. Continue u...

Coding & AlgorithmsTreesBacktracking & Recursion
1
0
13 people solved
Amazon logo
AmazonSnowflakeGoogle
Hard
Software Engineer

Minimum Semesters with Prerequisites and a Course Limit

Problem Courses are labeled 1..n. Each relation[prev,next] requires prev to be completed in an earlier semester than next. Take at most k courses per ...

Coding & AlgorithmsDynamic ProgrammingBit Manipulation
1
0
10 people solved
Amazon logo
AmazonGoogleMicrosoft

Also asked at Microsoft, Meta, Bloomberg, TikTok, Uber, DocuSign, Two Sigma, Sprinklr, OYO, ZIP

Medium
Software Engineer

Maximize Nonadjacent Value Selection on a Binary Tree

Problem Choose tree nodes maximizing their total value, with no directly linked parent and child both chosen. Return the maximum sum through the origi...

Coding & AlgorithmsDynamic ProgrammingTrees
1
0
10 people solved
PhonePe logo
PhonePeAmazonGoogle

Also asked at Google, Databricks, Meta, Microsoft, Airbnb

Hard
Software Engineer

Cheapest Route Within a Travel Deadline

Problem The connected undirected road network has cities 0 through n-1. Each road [u,v,time] takes the stated number of minutes, and parallel roads ar...

Coding & AlgorithmsGraphsDynamic Programming
1
0
12 people solved
Airbnb logo
Airbnb
Medium
Software Engineer Locked

Find Optimal Property Combination

This question evaluates combinatorial optimization and algorithmic problem-solving skills, focusing on subset selection under capacity constraints and...

Coding & AlgorithmsDynamic Programming
9
1
160 people solved
May 26, 2026
Amazon logo
AmazonGoldman SachsMeta

Also asked at Meta, OpenText, Bloomberg, Microsoft, Google, Oracle, TCS, Nutanix

Medium
Software Engineer

Find the Survivor of Clockwise Elimination

Problem People labeled 1 through n sit clockwise. Start counting at person 1, counting that person as one. Remove the kth counted person, then begin a...

Coding & AlgorithmsMath & Number TheoryDynamic Programming
1
0
11 people solved
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