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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
Palantir logo
Palantir
Medium
Software EngineerIntern Locked

Optimize Coupon Selection Under a Twenty-Point Budget

Optimize item and category coupon activation under a twenty-point budget while accounting for stacking, capped savings, rounding, and multiple optima.

Software Engineering FundamentalsDynamic ProgrammingBacktracking & Recursion
24
1
384 people solved
Aug 27, 2026
Google logo
GoogleInfosysMicrosoft

Also asked at Microsoft, EPAM Systems, Meta, Anduril, Lyft, Amazon, Goldman Sachs, Bloomberg, Oscar, Snapchat, Walmart Labs, Adobe, Flipkart, Zoho, Deshaw

Medium
Software Engineer

Count Complete Digit-to-Letter Decodings

Problem The codes "1" through "26" represent the letters A through Z. Given a digit string s, count how many ways its entire sequence can be divided i...

Coding & AlgorithmsDynamic Programming
4
0
29 people solved
Roblox logo
Roblox
Hard
Software Engineer Locked

Count Distinct Hat Assignments and Maximize Hat Points

Count valid one-hat-per-person assignments and maximize assigned-hat points with exact counts, unique hat use, and bitmask or backtracking reasoning.

Coding & AlgorithmsDynamic ProgrammingBacktracking & Recursion
40
0
355 people solved
Sep 20, 2026
Jane Street logo
Jane Street
Hard
Software Engineer Locked

Optimal Stopping with Square-Number Ruin

You repeatedly roll a fair six-sided die and add each roll to a running total. Explain the assumptions and derivation clearly, check edge cases, and s...

Statistics & MathPuzzles & BrainteasersProbability
144
2
1323 people solved
Aug 3, 2026
Google logo
GoogleAmazonMicrosoft

Also asked at Microsoft, Bloomberg, Meta, Goldman Sachs, TCS, Flipkart, EPAM Systems, TikTok, Zoho, NVIDIA, Visa, Razorpay, Akamai

Medium
Software Engineer

Count Right-and-Down Grid Routes

Problem A rectangular grid contains row_count rows and column_count columns. Starting in its upper-left cell, count the routes that finish in its lowe...

Coding & AlgorithmsDynamic ProgrammingGrids & Matrices
3
0
31 people solved
SIG (Susquehanna) logo
SIG (Susquehanna)
Medium
Quantitative Trader

Probability of Reaching a Chip Target Under Bold Betting

You start with $A$ chips and want to reach $B$ chips, where $A$ and $B$ are integers with $B > A > 0$. Each round you place an even-money bet that you...

Statistics & MathProbabilityPuzzles & Brainteasers
13
0
93 people solved
Sep 19, 2026
Databricks logo
Databricks
Medium
Software Engineer

Path Between Two Preorder-Numbered Nodes of an Implicit Fibonacci Tree

Fibonacci trees are defined recursively. T(1) and T(2) are single-node trees. For k >= 3, T(k) has a root whose left subtree is T(k - 1) and whose rig...

Coding & AlgorithmsTrees
32
0
228 people solved
Sep 11, 2026
eBay logo
eBay
Medium
Machine Learning Engineer

Count Staircases Built from n Blocks with Strictly Increasing Step Heights

You have n identical unit blocks. A staircase is a row of one or more steps, each step a column of blocks, where every step has a positive height and ...

Coding & AlgorithmsDynamic ProgrammingMath & Number Theory
2
0
18 people solved
Oct 24, 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
Amazon logo
Amazon
Medium
Software Engineer

Minimum Time to Finish Dependent Cake-Making Steps When Steps Can Run in Parallel

A bakery breaks the job of making a cake into n steps labeled 0 to n - 1, such as preheating the oven, mixing the batter, baking, making the frosting ...

Coding & AlgorithmsGraphs
8
1
91 people solved
Oct 9, 2026
Snowflake logo
Snowflake
Medium
Software Engineer

Propagate Permission Letters Through a DAG Using Each Node's Final State

A permission system is modeled as a directed acyclic graph with n nodes, numbered 0 to n - 1. Permissions are single lowercase letters. An edge [u, v]...

Coding & AlgorithmsGraphs
10
0
141 people solved
Sep 15, 2026
Harvey logo
Harvey
Medium
Software Engineer Locked

Eager Spreadsheet Formulas with Constant-Time Reads

Implement eager spreadsheet formulas with constant-time cached reads, transitive dependency updates, cycle rejection, and atomic definition replacemen...

Coding & AlgorithmsData Structure DesignGraphs
21
0
327 people solved
Sep 1, 2026
Amazon logo
AmazonGoogleBloomberg

Also asked at Bloomberg, Meta, Microsoft, Infosys, Walmart Labs, TikTok, Zoho, Oracle, Grammarly, Apple, Yandex, ServiceNow, TCS, Adobe

Medium
Software Engineer

Enumerate Balanced Parenthesis Strings

Problem Given the integer pairs, return every well-formed string that uses exactly that many opening parentheses and exactly that many closing parenth...

Coding & AlgorithmsBacktracking & RecursionMath & Number Theory
2
0
38 people solved
Atlys logo
Atlys
Medium
Software Engineer

Design a Splitwise-Style Expense Splitter with Minimum-Transaction Debt Settlement

Design a shared-expense app in the style of Splitwise. Members of a group record expenses that one person paid on behalf of several people, the app ke...

Software Engineering FundamentalsLow-Level Design (OOP)API Design
8
0
72 people solved
Oct 18, 2026
Microsoft logo
Microsoft
Medium
Software Engineer

Minimize the Largest Value When Picking at Least k Non-Adjacent Houses

A row of houses stands along a street, and nums[i] is the amount of money in house i. A robber will rob at least k houses but never two adjacent house...

Coding & AlgorithmsBinary SearchGreedy
16
0
197 people solved
Sep 7, 2026
Waymo logo
Waymo
Medium
Software Engineer Locked

Insert +, -, * and Parentheses Between Ordered Numbers to Reach a Target

Given numbers in a fixed order and a target, insert +, - or * between them and add parentheses to reach the target, returning the lexicographically sm...

Coding & AlgorithmsBacktracking & Recursion
15
0
160 people solved
Sep 10, 2026
IBM logo
IBM
Easy
Software Engineer Locked

Find the Minimum Shared Increment on Nonadjacent Array Positions

Choose nonadjacent indices for one common nonnegative increment to make an array nondecreasing, or determine that no operation can succeed.

Coding & AlgorithmsArrays & Strings
31
1
223 people solved
Sep 15, 2026
Applied Intuition logo
Applied Intuition
Medium
Software Engineer

Protobuf-Style Schema: Look Up Message Sizes and Field Types, Then Parse the Schema

Implement a small schema service for a simplified Protocol Buffers (protobuf) style schema language. A schema defines named messages. Each message has...

Software Engineering FundamentalsParsing & InterpretersGraphs
10
0
70 people solved
Sep 9, 2026
Virtu Financial logo
Virtu FinancialPinterestAmazon

Also asked at Amazon, Salesforce, Goldman Sachs, Google, Uber, Zscaler, Microsoft, Citadel, Intuit, Affirm

Hard
Quantitative Researcher

Minimum Number of Transfers to Settle All Debts in a Group

A group of people have lent money to each other. Each record transactions[i] = [x, y, amount] means that person x gave amount to person y. The group n...

Coding & AlgorithmsBacktracking & Recursion
5
0
63 people solved
Oscar logo
Oscar
Hard
Software EngineerSenior+ Locked

Longest Chain of Linked Names in a Directed Acyclic Graph

A graph coding question: given directed pairs of names that together form an acyclic graph, return the number of names in the longest chain that follo...

Coding & AlgorithmsGraphsDynamic Programming
4
0
73 people solved
Sep 21, 2026
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