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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
Walmart Labs logo
Walmart Labs
Easy
Software Engineer

Palindrome Check That Ignores Spaces, Symbols and Letter Case

Given a string, decide whether it reads the same forwards and backwards once spaces and symbols are ignored. The report says only that spaces and symb...

Coding & AlgorithmsArrays & StringsTwo Pointers & Sliding Window
0
0
12 people solved
Nov 6, 2026
Whatnot logo
Whatnot
Easy
Software Engineer

Check Whether a String Can Become a Palindrome by Deleting at Most One Character

Given a string s, return True if s can be made into a palindrome by deleting at most one character, and False otherwise. A palindrome reads the same f...

Coding & AlgorithmsTwo Pointers & Sliding WindowArrays & Strings
5
0
89 people solved
Oct 10, 2026
ByteDance logo
ByteDance
Medium
Software EngineerNew Grad

Minimum Number of Rooms to Host All Meetings

Meetings are held in a set of identical rooms. Each meeting needs one room for its whole duration, and a room can host only one meeting at a time. Ret...

Coding & AlgorithmsIntervals & SchedulingHeaps & Priority Queues
2
0
25 people solved
Oct 16, 2026
IBM logo
IBM
Hard
Software Engineer

Count Servers With No Requests in Each Query's Time Window

A system has n servers with ids 1 through n. You are given a request log in which each entry [server_id, time] records that server server_id received ...

Coding & AlgorithmsTwo Pointers & Sliding WindowSorting
1
0
14 people solved
Oct 25, 2026
Amazon logo
Amazon
Medium
Software Engineer

Max total of k consecutive bags over disjoint valued segments, modulo 1e9+7

Bags stand in a single row that never ends, one bag at every positive integer position 1, 2, 3, .... You are given segments, where segments[i] = [l, r...

Coding & AlgorithmsTwo Pointers & Sliding WindowIntervals & Scheduling
22
0
191 people solved
Sep 12, 2026
Microsoft logo
MicrosoftGoogleAmazon

Also asked at Amazon, Zoho, Yandex, Bloomberg, Infosys, Meta, Deshaw, Goldman Sachs, ServiceNow, JPMorgan Chase, Adobe, ByteDance, UiPath, Publicis Sapient, CRED

Medium
Software Engineer Locked

Longest Single-Letter Substring After at Most k Letter Replacements

A string problem: given uppercase letters and a budget of k single-letter changes, find the longest contiguous substring that can be turned into one r...

Coding & AlgorithmsTwo Pointers & Sliding Window
7
0
83 people solved
Google logo
GoogleAmazonBloomberg

Also asked at Bloomberg, TCS, Microsoft, Meta, EPAM Systems, Yandex, Squarespace, Apple, HubSpot, Zoho, Goldman Sachs, NVIDIA, HCL, Infosys, Cisco, Cognizant

Easy
Software Engineer

Merge Sorted Values into an Existing Array Buffer

Problem Merge two sorted integer sequences into nums1. Its first m positions contain its actual sequence, followed by n zero-filled spare positions. T...

Coding & AlgorithmsTwo Pointers & Sliding Window
4
0
32 people solved
Capital One logo
Capital One
Medium
Software EngineerNew Grad

Count Subarrays Whose Step-by-Step Changes Match an Up, Flat, Down Pattern

You are given an integer array nums of length n and an array pattern of length m whose values are each -1, 0 or 1. Each pattern value describes the re...

Coding & AlgorithmsArrays & Strings
14
0
176 people solved
Sep 27, 2026
Amazon logo
Amazon
Medium
Software EngineerIntern

Max Consecutive Uptime After Repairing One Window of Exactly k Log Entries

A server's health log is a string of 0s and 1s, one character per time step: 1 means the server was up and running normally, and 0 means it had failed...

Coding & AlgorithmsTwo Pointers & Sliding Window
2
0
14 people solved
Oct 29, 2026
LinkedIn logo
LinkedIn
Easy
Software Engineer

Minimum index distance between two given words in a word list

Given a list of words and two different words that both occur in it, return the smallest distance between a position of the first word and a position ...

Coding & AlgorithmsArrays & Strings
9
0
74 people solved
Oct 4, 2026
Abridge logo
Abridge
Hard
Software Engineer

Run-Length Compress a Character List With Multi-Digit Counts

You are given a non-empty list chars of single characters. Compress it with run-length encoding: scan the list from left to right and split it into ma...

Coding & AlgorithmsArrays & StringsTwo Pointers & Sliding Window
5
0
75 people solved
Sep 24, 2026
Spacex logo
Spacex
Easy
Software Engineer Locked

Align Telemetry Streams and Publish Versioned Corrections

Define telemetry subtraction semantics, handle missing or repeated timestamps, and reconcile late events with versioned, idempotent corrections.

Software Engineering FundamentalsBatch & Stream ProcessingDistributed Transactions & Idempotency
10
0
124 people solved
Sep 12, 2026
Glean logo
Glean
Medium
Software Engineer

Find the k-th Largest Value Across Two Sorted Arrays Without Fully Merging Them

You are given two integer arrays a and b, each sorted in non-decreasing order, and an integer k. Return the k-th largest value in the combined collect...

Coding & AlgorithmsBinary Search
4
0
60 people solved
Sep 30, 2026
Salesforce logo
Salesforce
Medium
Software EngineerSenior+ Locked

Fewest Repeat-Free Pieces After Deleting Every Copy of One Letter

A string problem: delete every occurrence of one chosen lowercase letter, then split what remains into the fewest contiguous pieces with no repeated l...

Coding & AlgorithmsGreedyArrays & Strings
13
0
94 people solved
Sep 22, 2026
Microsoft logo
Microsoft
Medium
Software Engineer

Most Frequent Substring Under Distinct-Letter and Length Limits

Given a lowercase string s, consider only the substrings that satisfy two limits, and return how many times the most frequent of them occurs in s. A s...

Coding & AlgorithmsTwo Pointers & Sliding WindowArrays & Strings
21
0
151 people solved
Sep 7, 2026
Amazon logo
AmazonMetaBloomberg

Also asked at Bloomberg, Google, Microsoft, Infosys, Accenture, TCS, Adobe, Oracle, DoorDash, Walmart Labs, IBM, Flipkart, Uber, Rubrik, Meesho

Medium
Software Engineer

Advance an Array to Its Next Lexicographic Order

Problem Rearrange the integer array nums in place into the next lexicographically greater arrangement of its values. If no greater arrangement exists,...

Coding & AlgorithmsArrays & StringsGreedy
1
0
25 people solved
LinkedIn logo
LinkedIn
Medium
Software Engineer

Count Subsequences Whose Minimum Plus Maximum Stays Within a Target

Given an integer array nums and an integer target, count the non-empty subsequences of nums whose smallest element plus largest element is at most tar...

Coding & AlgorithmsTwo Pointers & Sliding WindowMath & Number Theory
5
0
43 people solved
Oct 4, 2026
Google logo
Google
Medium
Software Engineer

O(1) Range Queries: Are All Elements of a Subarray Distinct?

You are given an integer array nums and a range [l, r] of indices. Determine whether the elements nums[l], nums[l + 1], ..., nums[r] are all distinct,...

Coding & AlgorithmsArrays & StringsTwo Pointers & Sliding Window
26
1
207 people solved
Sep 17, 2026
Oracle logo
Oracle
Medium
Software Engineer

Count requests dropped by stacked 1-, 10- and 60-second rate limits

A gateway enforces three rate limits at once: at most 3 requests in any one second, at most 20 requests in any 10-second span, and at most 60 requests...

Coding & AlgorithmsTwo Pointers & Sliding WindowRate Limiting
1
0
14 people solved
Oct 29, 2026
Asana logo
Asana
Medium
Software Engineer

Pick the K Values Nearest a Target in a Sorted Integer Array

You are given an integer array arr sorted in non-decreasing order, an integer k, and a target integer x. Return the k elements of arr that are closest...

Coding & AlgorithmsBinary SearchTwo Pointers & Sliding Window
6
0
55 people solved
Sep 10, 2026
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