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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
1.5k
Companies
980
Updated
11.12.2026
1.5k 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
Jump Trading logo
Jump Trading
Medium
Software Engineer Locked

Identify read-only files from permission records

This question evaluates proficiency in parsing and filtering structured data by interpreting Unix-like permission strings and extracting filenames bas...

Coding & AlgorithmsArrays & Strings
11
0
136 people solved
Feb 12, 2026
Microsoft logo
Microsoft
Hard
Software Engineer Locked

Answer suffix maximum-frequency queries

This question evaluates algorithm design skills and array-processing competency for answering repeated queries efficiently, focusing on time and space...

Coding & AlgorithmsArrays & Strings
7
0
122 people solved
Feb 11, 2026
Eightfoldai logo
Eightfoldai
Medium
Software Engineer

Make a Parentheses String Valid

Given a string s containing lowercase English letters and the characters '(' and ')', remove the minimum number of parentheses so that the resulting s...

Coding & AlgorithmsStacks & Queues
11
0
123 people solved
Mar 19, 2026
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
Verkada logo
Verkada
Hard
Software Engineer

Implement WordGuess feedback scoring

WordGuess (Wordle-like) scoring Implement a function that scores a guess against a secret word of the same length. Scoring rules (per character) Retur...

Coding & AlgorithmsArrays & Strings
23
0
163 people solved
Oct 13, 2025
Google logo
Google
Medium
Machine Learning Engineer Locked

Compute sum over consecutive-step subarrays

This question evaluates proficiency in array processing, detection of consecutive-step arithmetic sequences, and accumulation of subarray sums with at...

Coding & AlgorithmsArrays & Strings
15
1
131 people solved
Feb 8, 2026
Palo Alto Networks logo
Palo Alto Networks
Medium
Software Engineer

Find normalized list difference efficiently

Given two lists of strings, list1 and list2, return all elements that appear in list1 but not in list2 after applying a consistent normalization step ...

Coding & AlgorithmsArrays & Strings
8
0
125 people solved
Sep 6, 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
Google logo
GoogleBloombergAmazon
Hard
Software Engineer

Count Zigzag Arrays with Large Length

Problem Count arrays of length n whose integer entries satisfy all of the following: - Every entry is in the inclusive range [l,r]. - No neighboring e...

Coding & AlgorithmsDynamic ProgrammingMath & Number Theory
0
0
8 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
Google logo
Google
Hard
Machine Learning Engineer

Design data structure similar to LRU cache

You are asked to design and implement a data structure that behaves similarly to an LRU (Least Recently Used) cache, but with a small variation: - The...

Coding & AlgorithmsData Structure DesignLinked Lists
13
1
152 people solved
Dec 8, 2025
Amazon logo
AmazonGoogle
Medium
Software Engineer

Total Digit Waviness Across a Range

Problem Given integers num1 and num2, return the sum of the waviness of every integer in the inclusive range [num1,num2]. Use each number's ordinary d...

Coding & AlgorithmsMath & Number TheoryArrays & Strings
0
0
7 people solved
Capital One logo
Capital One
Medium
Software EngineerSenior+

Count Numbers With Odd Zeros

Given an array a of non-negative integers, count how many elements contain an odd number of digit '0' in their decimal representation. Notes: - Treat ...

Coding & AlgorithmsArrays & Strings
26
0
209 people solved
Jan 20, 2026
Bloomberg logo
BloombergGoogleAmazon
Hard
Software Engineer

Total Digit Waviness Across a Large Range

Problem Given integers num1 and num2, return the total waviness of all integers in the inclusive range [num1,num2]. Use the ordinary decimal represent...

Coding & AlgorithmsDynamic ProgrammingMath & Number Theory
0
0
6 people solved
Medium
Software Engineer Locked

Filter Logs by an Ordered Severity Threshold

Filter structured logs by an ordered minimum severity, preserving threshold-and-higher records while handling empty and unknown levels under an explic...

Coding & AlgorithmsArrays & StringsTesting & Quality
0
0
19 people solved
Sep 16, 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
Datadog logo
Datadog
Medium
Software Engineer

Match logs to prior queries

Question You receive a stream of strings, each beginning with either "Q:" (query) or "L:" (log). A query consists of space-separated words and should ...

Coding & AlgorithmsData Structure DesignArrays & Strings
29
0
235 people solved
Jul 29, 2025
Netflix logo
Netflix
Medium
Software Engineer

Find user pairs with overlapping last K movies

You are given the same user movie-watching histories as in the previous problem. Each user’s history is an ordered list of movie IDs from earliest to ...

Coding & AlgorithmsArrays & Strings
38
0
259 people solved
Dec 8, 2025
Amazon logo
AmazonBloomberg
Medium
Software Engineer

Apply Special String Commands

Apply Special String Commands You are given a string s containing lowercase English letters and the commands *, #, and %. Start with empty working tex...

Coding & AlgorithmsArrays & StringsSimulation & State Machines
1
0
10 people solved
Abnormal Security logo
Abnormal Security
Medium
Software Engineer

Design a duplicate-file removal algorithm

Design a duplicate-file removal algorithm Your filesystem contains millions of photos. Duplicates are strictly byte-identical files (no ML/CV similari...

Coding & AlgorithmsArrays & StringsFile & Media Storage
18
0
206 people solved
Jul 16, 2025
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