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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
435
Companies
980
Updated
11.12.2026
435 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
Roblox logo
Roblox
Easy
Machine Learning Engineer

Extend counter to per-client rate limiting

You are extending the recent-requests counter to support per-client rate limiting. Each request now includes a clientId identifying the caller. You mu...

Coding & AlgorithmsData Structure DesignTwo Pointers & Sliding Window
9
0
184 people solved
Dec 8, 2025
Two Sigma logo
Two Sigma
Medium
Data Scientist Locked

Return sorted values after quadratic transform

This question evaluates understanding of mathematical transformations and array manipulation, specifically how applying a quadratic function affects t...

Coding & AlgorithmsTwo Pointers & Sliding WindowArrays & Strings
7
0
104 people solved
Jan 22, 2026
DoorDash logo
DoorDash
Hard
Analytics Engineer

Find Maximum Window Sum

Given an integer array nums and an integer k, write code to find the maximum sum of any contiguous subarray of length exactly k. Assume 1 <= k <= len(...

Coding & AlgorithmsTwo Pointers & Sliding Window
9
0
112 people solved
Oct 12, 2025
Salesforce logo
SalesforceGoogleAmazonMeta

Also asked at Amazon, Meta

Medium
Software Engineer

Remove Elements to Balance the Remaining Values

Remove Elements to Balance the Remaining Values You are given an integer array nums and an integer k. A nonempty array is balanced when its maximum va...

Coding & AlgorithmsSortingTwo Pointers & Sliding Window
0
0
9 people solved
Uber logo
Uber
Medium
Software Engineer

Count subarrays with at least k fruit pairs

Given an integer array nums where each value denotes a fruit type, and an integer k: For any subarray, define a 'pair' for fruit value v if its freque...

Coding & AlgorithmsTwo Pointers & Sliding WindowArrays & Strings
18
0
154 people solved
Sep 6, 2025
Google logo
Google
Medium
Software Engineer

Check if all substrings are anagrams of words

You are given a string s (letters only) and access to an English dictionary dict (a set of valid words). Return true if every contiguous substring of ...

Coding & AlgorithmsArrays & Strings
70
0
666 people solved
Mar 11, 2026
Amazon logo
AmazonGoogle
Medium
Software Engineer

GCD Sum of Prescribed Derived-Value Pairs

Problem Given a positive integer array nums, construct a derived array prefixGcd using the original input order. At each index i: `text mx_i = max(num...

Coding & AlgorithmsMath & Number TheorySorting
0
0
8 people solved
Google logo
Google
Medium
Software Engineer

Find shared objects across two log files

You are given two large log files representing activity on two different days. Each line of each log has three fields: - timestamp: a time value (you ...

Coding & AlgorithmsArrays & StringsBatch & Stream Processing
10
0
145 people solved
Nov 5, 2025
Microsoft logo
Microsoft
Medium
Software EngineerSenior+

Move every zero to the end of an array while preserving the order of other values

Given a list of integers nums, move every 0 to the end of the list while keeping the non-zero values in their original relative order. Return the rear...

Coding & AlgorithmsTwo Pointers & Sliding WindowArrays & Strings
1
0
15 people solved
Apr 3, 2026
ByteDance logo
ByteDance
Medium
Software Engineer Locked

Find the Earliest Contiguous Removal That Balances Index Sums

Find the earliest fixed-length block to remove so the remaining array has equal even- and odd-index sums, accounting for the reindexed suffix.

Coding & AlgorithmsArrays & StringsTwo Pointers & Sliding Window
6
0
105 people solved
Sep 9, 2026
Amazon logo
AmazonGoogleJosh Technology

Also asked at Josh Technology, Meta, Bloomberg

Medium
Software Engineer

Largest Sum of Symmetric List Partners

Problem A singly linked list has even length n. Pair each node at zero-based position i in the first half with the node at position n - 1 - i. Return ...

Coding & AlgorithmsLinked Lists
0
0
7 people solved
Anthropic logo
Anthropic
Medium
Software Engineer

Solve programming task with follow-ups

Question Pure programming problem solving: implement the core algorithmic solution, then extend it to ( 1) support a constraint of consecutive N eleme...

Coding & Algorithms
23
3
239 people solved
Aug 4, 2025
Microsoft logo
Microsoft
Medium
Software Engineer Locked

Answer common graph, grid, and array tasks

This set of problems evaluates algorithmic skills across arrays, graph theory, and grid/matrix traversal—covering sliding-window and contiguous-segmen...

Coding & AlgorithmsGraphsGrids & Matrices
28
0
254 people solved
Mar 1, 2026
Verkada logo
Verkada
Medium
Software Engineer

Find motion intervals above threshold

You are processing data from a single security camera. You are given: - A threshold value T (a real number). - A vector (array) of time-stamped motion...

Coding & AlgorithmsArrays & Strings
15
0
188 people solved
Dec 8, 2025
Google logo
Google
Medium
Software Engineer Locked

Sliding Window Average After Dropping the Largest Values

Compute one average per fixed-size sliding window after removing exactly the largest k values, counting duplicates separately. Support negative number...

Coding & AlgorithmsTwo Pointers & Sliding WindowHeaps & Priority Queues
29
1
233 people solved
May 23, 2026
Uber logo
Uber
Medium
Software Engineer

Simulate one-round color elimination on a grid

Given an m x n integer matrix board where board[r][c] > 0 represents a color and 0 represents empty: ( 1) A nonzero cell at (r,c) explodes in this rou...

Coding & AlgorithmsSimulation & State MachinesGrids & Matrices
16
0
110 people solved
Sep 6, 2025
Amazon logo
Amazon
Medium
Data Scientist

Solve Algorithmic Challenges in Online Coding Assessments

Scenario Online assessment requiring implementation of common algorithmic problems. Question Given an array of integers and a target, return indices o...

Coding & AlgorithmsArrays & StringsTwo Pointers & Sliding Window
19
0
164 people solved
Aug 4, 2025
Google logo
Google
Hard
Software Engineer

Shortest Paths in a Value-Difference Graph

Shortest Paths in a Value-Difference Graph There are n nodes labeled 0 through n - 1. Node i has integer value nums[i]; these values are not necessari...

Coding & AlgorithmsGraphsSorting
0
0
8 people solved
Bloomberg logo
BloombergGoogleAmazon

Also asked at Amazon, NCR, Microsoft

Medium
Software Engineer

Track Daily Secret Sharing before Each Person Forgets

Problem One person learns a secret on day 1. A person who learns it on day d tells one new person each day from d + delay through d + forget - 1. On d...

Coding & AlgorithmsDynamic ProgrammingSimulation & State Machines
0
0
6 people solved
Walmart Labs logo
Walmart Labs
Easy
Software EngineerSenior+

Merge two sorted arrays in-place

You are given two integer arrays sorted in non-decreasing order, and two integers m and n: - nums1 has length m + n. The first m elements of nums1 con...

Coding & AlgorithmsTwo Pointers & Sliding WindowArrays & Strings
13
0
126 people solved
Dec 9, 2025
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