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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
Roblox logo
Roblox
Medium
Software Engineer

Find largest digit-sum bucket size

You are given two integers low and high (inclusive). Define s(x) as the sum of the decimal digits of x. For every integer x in [low, high], place x in...

Coding & AlgorithmsMath & Number Theory
23
0
253 people solved
Aug 13, 2025
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
Snowflake logo
Snowflake
Medium
Software Engineer

Minimum Months to Finish All Courses with Durations and Unlimited Parallelism

Courses are numbered 0 to n - 1. Course i takes time[i] months to complete, some courses can start only after others are complete, and any number of c...

Coding & AlgorithmsGraphsDynamic Programming
1
0
25 people solved
Apr 28, 2026
Snowflake logo
Snowflake
Medium
Software Engineer

Effective Permissions in an Inheritance DAG with Allow and Deny Lists

Permissions are inherited along the edges of a directed acyclic graph. Each node, such as a group, a folder or a resource, has its own allow list and ...

Software Engineering FundamentalsGraphsAuthentication & Authorization
2
0
19 people solved
Apr 28, 2026
Google logo
GoogleAmazonMeta

Also asked at Meta, Microsoft, Bloomberg

Hard
Software Engineer

Largest Sum of a BST Rooted Subtree

Problem Among rooted subtrees of the native binary tree, find the largest sum whose entire subtree is a strict binary search tree. Every left descenda...

Coding & AlgorithmsTreesDynamic Programming
0
0
8 people solved
Amazon logo
Amazon
Hard
Software Engineer

Maximum Meeting Earnings Including Idle Gaps

Maximum Meeting Earnings Including Idle Gaps You are given meetings, where each row is [start, end, revenue]. Select a nonempty subset of meetings tha...

Coding & AlgorithmsIntervals & SchedulingDynamic Programming
0
0
5 people solved
Microsoft logo
Microsoft
Medium
Software Engineer

Solve load balancing and perfect pairs

1) Contiguous load balancing: You have n identical resources (servers) and m ordered tasks with processing times burstTime[0..m-1]. Each server must b...

Coding & AlgorithmsBinary SearchArrays & Strings
37
0
241 people solved
Sep 6, 2025
Snapchat logo
Snapchat
Hard
Software Engineer

Count ways to decode digit string

You are given a string s consisting of digits '0' to '9'. The string encodes a message using the following mapping: - '1' → A, '2' → B, ..., '26' → Z....

Coding & AlgorithmsDynamic Programming
20
0
137 people solved
Dec 8, 2025
Amazon logo
Amazon
Hard
Software Engineer

Cheapest Grid Path with a Turn Limit

Cheapest Grid Path with a Turn Limit You are given a rectangular matrix grid and an integer k. The value in a cell is the cost of visiting it. Start a...

Coding & AlgorithmsDynamic ProgrammingGraphs
0
0
8 people solved
Amazon logo
AmazonGoogle
Medium
Software Engineer

Maximum Subarray Sum in Repeated Copies

Problem Concatenate k copies of arr and find the largest contiguous-subarray sum. The empty subarray is allowed and has sum 0. Return the maximum sum ...

Coding & AlgorithmsDynamic ProgrammingArrays & Strings
1
0
9 people solved
Turing logo
Turing
Medium
Software Engineer

Count permutations with exactly n inversions

You are given two integers m and n. Consider all permutations of the array [1, 2, ..., m] (each number from 1 to m appears exactly once). A permutatio...

Coding & AlgorithmsDynamic ProgrammingMath & Number Theory
12
0
143 people solved
Nov 24, 2025
Databricks logo
Databricks
Hard
Software Engineer Locked

Find Path Between Fibonacci Tree Nodes

This question evaluates a candidate's ability to reason about recursive tree structures, map preorder indices to positions in a recursively defined Fi...

Coding & AlgorithmsTreesDynamic Programming
20
0
155 people solved
Feb 13, 2026
DRW logo
DRW
Medium
Software EngineerIntern

Solve three algorithmic OA problems

This is an online assessment (Codility-style, 150 minutes) consisting of three independent coding problems. Solve each one separately; they do not sha...

Coding & AlgorithmsBacktracking & RecursionBit Manipulation
56
0
469 people solved
Oct 8, 2025
Google logo
GoogleASUSAmazonMeta

Also asked at Amazon, Meta

Hard
Software Engineer

Winner of the Optimal One-to-Three Stone Game

Problem Alice and Bob alternate taking the first 1,2,or 3 remaining stones, with Alice first. Each player adds the values taken to a score initially 0...

Coding & AlgorithmsDynamic Programming
0
0
6 people solved
Google logo
GoogleAmazonMicrosoft

Also asked at Microsoft, Meta, Bloomberg

Hard
Software Engineer

Build a Shortest String Containing Two Subsequences

Problem Return a shortest string containing both str1 and str2 as subsequences. A subsequence keeps character order while allowing deletions. If sever...

Coding & AlgorithmsDynamic ProgrammingArrays & Strings
1
0
8 people solved
Amazon logo
AmazonSnowflakeGoogleMeta

Also asked at Google, Meta

Hard
Software Engineer

Paint Every Wall at Minimum Cost with Two Painters

Paint Every Wall at Minimum Cost with Two Painters You are given 0-indexed integer arrays cost and time, each containing one entry for each of n diffe...

Coding & AlgorithmsDynamic Programming
1
0
13 people solved
Amazon logo
Amazon
Easy
Data Engineer

Solve Two String Problems

You are asked to solve the following two coding problems: 1. Unique Morse Code Transformations You are given an array of lowercase English words, word...

Coding & AlgorithmsString AlgorithmsArrays & Strings
39
0
298 people solved
Feb 23, 2026
Uber logo
Uber
Medium
Software Engineer

Solve Balanced Permutations and Tree Reversals

You have 90 minutes to solve the following two independent coding problems. Problem 1: Balanced Prefix Values in a Permutation You are given a permuta...

Coding & AlgorithmsTreesArrays & Strings
15
0
157 people solved
Apr 3, 2026
Salesforce logo
Salesforce
Medium
Software Engineer

Solve array duplicate flags and binary swaps

Problem 1: Flag duplicates on the left and right You are given an integer array nums of length n. For each index i, determine: 1. Left-duplicate: whet...

Coding & AlgorithmsArrays & StringsDynamic Programming
37
1
265 people solved
Dec 17, 2025
Grammarly logo
GrammarlyMorgan Stanley
Medium
Software Engineer

Fewest Substrings with Equal Character Frequencies

Fewest Substrings with Equal Character Frequencies You are given a lowercase English string s. Partition the entire string into one or more nonempty, ...

Coding & AlgorithmsDynamic ProgrammingArrays & Strings
1
0
11 people solved
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