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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
Apple logo
AppleGoogleGoldman Sachs

Also asked at Goldman Sachs, Spinny, Citadel

Medium
Software Engineer

Compute Knight Survival Probability after K Random Moves

Problem A knight starts at (row,column) on an n-by-n board with zero-based coordinates. At each move it chooses uniformly among all eight knight offse...

Coding & AlgorithmsDynamic ProgrammingProbability
1
0
12 people solved
Amazon logo
AmazonInfosysGoogle

Also asked at Google, Bloomberg, Geico, Apple, Microsoft, TikTok, Aqr

Medium
Software Engineer

Maximize Trading Profit with a One-Day Cooldown

Maximize Trading Profit with a One-Day Cooldown Given daily prices prices, return the maximum profit obtainable by buying and selling one share at a t...

Coding & AlgorithmsDynamic Programming
0
0
4 people solved
Amazon logo
AmazonGoogleMeta
Hard
Software Engineer

Stack Rotatable Cuboids for Maximum Height

Problem Choose a subset of cuboids and orient each by permuting its three dimensions. A cuboid may sit on another only when its width, length, and hei...

Coding & AlgorithmsDynamic ProgrammingSorting
1
0
11 people solved
Amazon logo
AmazonBloombergYandex

Also asked at Yandex, Google, Meta, Microsoft, TCS, VK

Medium
Software Engineer

Longest Run of Ones After One Required Deletion

Problem Delete exactly one element of the binary array nums. Return the longest all-one contiguous subarray length in the resulting array,or 0 if ther...

Coding & AlgorithmsTwo Pointers & Sliding WindowArrays & Strings
0
0
8 people solved
Google logo
GoogleBloombergAmazonMeta

Also asked at Amazon, Meta

Medium
Software Engineer

Count All Maximum-Length Strictly Increasing Subsequences

Problem Return the number of longest strictly increasing subsequences in nums. Subsequences preserve index order but need not be contiguous. Different...

Coding & AlgorithmsDynamic ProgrammingArrays & Strings
0
0
9 people solved
Optiver logo
Optiver
Easy
Data Scientist

Compute probabilities and expectations in random processes

This is a rapid-fire probability and expectation round: a sequence of short, self-contained brain-teasers solved on a whiteboard. The interviewer expe...

Statistics & MathProbabilityPuzzles & Brainteasers
34
0
409 people solved
Nov 19, 2025
Airbnb logo
AirbnbTCS
Hard
Software Engineer

Fewest People Covering Every Required Skill

Problem Choose a smallest-size set of people whose combined skills cover every string in req_skills. Return their original zero-based indices in any o...

Coding & AlgorithmsDynamic ProgrammingBit Manipulation
0
0
12 people solved
Meta logo
Meta
Medium
Data Engineer

Solve SQL and Python coding tasks

You are given a small library system with the following relational schema and several Python data-processing tasks. Answer the SQL questions and imple...

Coding & AlgorithmsSQLDynamic Programming
82
6
553 people solved
Nov 20, 2025
DevRev logo
DevRevGoogleAmazon

Also asked at Amazon, Meta, Microsoft, Bloomberg, Goldman Sachs

Medium
Software Engineer

Count Every All-One Square in a Binary Matrix

Problem Return the number of contiguous square submatrices of matrix whose entries are all 1. Count different positions and different side lengths sep...

Coding & AlgorithmsDynamic ProgrammingGrids & Matrices
1
0
8 people solved
Jane Street logo
Jane Street
Medium
Quantitative Trader

Solve queue switch and coin change puzzles

This entry contains two separate interview-style quantitative/algorithmic questions. --- 1. Queue switching decision problem You are standing in a sin...

Coding & AlgorithmsPuzzles & BrainteasersDynamic Programming
53
0
464 people solved
Oct 14, 2025
Google logo
GoogleAmazonMeta

Also asked at Meta, Bloomberg, Microsoft, Squarepoint

Easy
Software Engineer

Reach the Staircase Top at Minimum Cost

Problem cost[i] is paid when leaving step i, after which you may climb one or two steps. You may begin at step 0 or step 1. Return the least total cos...

Coding & AlgorithmsDynamic Programming
1
0
9 people solved
Google logo
GoogleWixMicrosoft

Also asked at Microsoft, Amazon, Siemens

Hard
Software Engineer

Find the Fewest Edits Needed to Strengthen a Password

Find the Fewest Edits Needed to Strengthen a Password A password is strong only when all three conditions hold: - Its length is from 6 through 20, inc...

Coding & AlgorithmsGreedyArrays & Strings
0
0
8 people solved
Amazon logo
Amazon
Hard
Software Engineer

Finish the Orange Supply in the Fewest Days

Problem Start with n oranges. Each day choose one available action: eat one orange; when the current count is divisible by two, eat half; or when it i...

Coding & AlgorithmsDynamic ProgrammingMath & Number Theory
1
0
9 people solved
Google logo
GoogleBloomberg
Hard
Software Engineer

Best Upward Board Score and Number of Optimal Routes

Problem Start at S in the bottom-right corner of the square board and reach E in the top-left. Each move goes up,left or diagonally up-left to a non-X...

Coding & AlgorithmsDynamic ProgrammingGrids & Matrices
0
0
9 people solved
Snowflake logo
Snowflake
Medium
Software Engineer

Minimum Node Deletions to Bring an N-ary Tree's Height Within k

You are given a rooted N-ary tree and a limit k. Deleting a node removes it from the tree, and its children are attached to its parent instead of bein...

Coding & AlgorithmsTreesGreedy
3
0
27 people solved
Apr 28, 2026
InMobi logo
InMobiGoogleMeta

Also asked at Meta, Microsoft, Amazon, Bloomberg

Hard
Software Engineer

Maximum Sum of an Increasing-Decreasing-Increasing Subarray

Problem You are given an integer array nums. Consider a contiguous subarray nums[l...r] for which there are indices l < p < q < r such that: - nums[l....

Coding & AlgorithmsDynamic ProgrammingArrays & Strings
0
0
6 people solved
Amazon logo
Amazon
Hard
Software Engineer

Maximize the Difference between Two Present Letter Counts

Problem For a nonempty contiguous substring of lowercase string s, choose two letters present in that substring and subtract the smaller occurrence co...

Coding & AlgorithmsDynamic ProgrammingArrays & Strings
0
0
10 people solved
Snowflake logo
Snowflake
Medium
Software Engineer

Build a Tree Whose Nodes Hold the Original Tree's Subtree Sums

Every node of a rooted tree holds an integer. Build a second tree with the same shape in which each node holds the sum of all the values in the corres...

Coding & AlgorithmsTrees
3
0
28 people solved
Apr 28, 2026
Agoda logo
Agoda
Medium
Software Engineer

Compute triangle min path and dice stopping stats

You are given two independent interview questions. 1) Triangle minimum path sum (DP) Given a triangular array triangle with n rows, find the minimum p...

Coding & AlgorithmsDynamic ProgrammingProbability
15
0
141 people solved
Nov 14, 2025
Google logo
Google
Hard
Machine Learning Engineer Locked

Solve several streaming, DAG, and DP tasks

This multi-part question evaluates proficiency in streaming and online algorithms, DAG-based scheduling and parallelism reasoning, and constrained dyn...

Coding & AlgorithmsGraphsDynamic Programming
24
2
274 people solved
Jan 6, 2026
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