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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
Amazon logo
AmazonGoogle
Hard
Software Engineer

Add Distinct-Letter Counts across Every Substring

Problem The appeal of a string is the number of distinct letters it contains. Given a lowercase string s, return the total appeal of all its nonempty ...

Coding & AlgorithmsArrays & StringsDynamic Programming
0
0
10 people solved
Microsoft logo
Microsoft
Medium
Software EngineerSenior+

Bucket Words That Are Letter Rearrangements of One Another

You are given a list of lowercase words. Partition them into groups so that two words are in the same group exactly when one can be formed by rearrang...

Coding & AlgorithmsArrays & Strings
1
0
12 people solved
Aug 23, 2026
Google logo
GoogleUberLinkedIn

Also asked at LinkedIn, Meta, JPMorgan Chase, Amazon, Goldman Sachs

Medium
Software Engineer

Shuffle an Array and Restore Its Original Order

Shuffle an Array and Restore Its Original Order Implement a Solution object initialized with an integer array of distinct values: - Solution(nums): in...

Coding & AlgorithmsMath & Number TheoryArrays & Strings
0
0
10 people solved
DoorDash logo
DoorDash
Medium
Software Engineer Locked

Validate a Shopping Cart

This question evaluates the ability to implement robust input and business-rule validation for shopping-cart items, including data integrity checks, i...

Coding & AlgorithmsData Cleaning & WranglingArrays & Strings
25
0
200 people solved
Jun 10, 2026
Google logo
GoogleMetaBloomberg

Also asked at Bloomberg, Amazon, TCS, Microsoft, Zoho

Easy
Software Engineer

Find the Repeated and Missing Values in a Square Grid

Find the Repeated and Missing Values in a Square Grid You are given a 0-indexed n * n integer grid whose values lie in [1,n^2]. Exactly one value a ap...

Coding & AlgorithmsArrays & Strings
0
0
9 people solved
Microsoft logo
Microsoft
Medium
Software EngineerSenior+

List Point Pairs Spanning Non-Degenerate Boxes in N Dimensions, Sorted by Volume

You are given n points in d-dimensional space; point i (0-based) has integer coordinates points[i]. Any two points i < j define an axis-aligned box th...

Coding & AlgorithmsSorting
1
0
17 people solved
Jun 16, 2026
Amazon logo
AmazonOpenTextMeta

Also asked at Meta, Google, Bloomberg, Microsoft

Easy
Software Engineer

Replace Circular Entries with Neighbor Sums

Problem For every position in circular array code, compute a replacement from the original array. If k is positive, sum the next k entries; if negativ...

Coding & AlgorithmsArrays & Strings
1
0
9 people solved
Affirm logo
Affirm
Medium
Software Engineer Locked

Aggregate loans and match repayments

This question evaluates the ability to aggregate transactional loan records and match repayment transactions to outstanding loans, testing competencie...

Coding & AlgorithmsArrays & StringsSimulation & State Machines
18
1
234 people solved
Mar 7, 2026
Voleon logo
Voleon
Hard
Software Engineer

Count White Balls After K Steps

You are given a ring of N positions indexed from 0 to N-1. - At each position i, there is initially one ball whose color is either white or black. - E...

Coding & AlgorithmsMath & Number Theory
50
0
440 people solved
Feb 10, 2026
Google logo
Google
Medium
Software Engineer

Find largest subset sharing a common digit

You are given an array nums of length N (1 ≤ N ≤ 100). Every element is a two-digit integer between 10 and 99 (inclusive). Select as many elements as ...

Coding & AlgorithmsArrays & Strings
22
2
228 people solved
Feb 25, 2026
Pinterest logo
Pinterest
Easy
Site Reliability EngineerSenior+

Fetch a Field from Two URLs, Extract Valid IP Addresses, and Rank Them by Count

This phone screen for a senior site reliability engineering role is a short, hands-on scripting exercise in four steps, each building on the previous ...

Software Engineering FundamentalsAPI Integration & HTTP ClientsArrays & Strings
4
0
48 people solved
Jul 2, 2026
Databricks logo
Databricks
Hard
Software Engineer Locked

Minimize run-length encoded length with deletions

This question evaluates proficiency in string manipulation, run-length encoding concepts, and dynamic programming-based optimization under deletion co...

Coding & AlgorithmsDynamic Programming
38
0
626 people solved
Feb 12, 2026
Google logo
GoogleInfosysSalesforce

Also asked at Salesforce, Bloomberg, Amazon, TCS

Medium
Software Engineer

Count Distinct Value Pairs with a Fixed Gap

Problem Return the number of distinct unordered value pairs in nums whose absolute difference is k. The two occurrences used by a pair must have diffe...

Coding & AlgorithmsArrays & Strings
1
0
10 people solved
Google logo
GoogleBloombergMetaAmazon

Also asked at Meta, Amazon

Easy
Software Engineer

Maximum Product of Two Decimal Digits

Maximum Product of Two Decimal Digits Given a positive integer n, choose two different digit positions in its decimal representation and return the la...

Coding & AlgorithmsMath & Number Theory
1
0
9 people solved
Stripe logo
Stripe
Easy
Data Scientist

Match payments to invoices by memo or amount

Scenario You are building a small reconciliation tool that matches payments to invoices. Data structures Assume you are given: - invoices: a list of i...

Coding & AlgorithmsData Cleaning & WranglingArrays & Strings
34
0
244 people solved
Oct 25, 2025
Chime logo
Chime
Medium
Software Engineer

Find missing number from concatenated digits

Given an integer n (1 ≤ n ≤ 99) and a digit string s formed by concatenating the decimal representations of the integers 1..n except for one missing n...

Coding & AlgorithmsArrays & StringsMath & Number Theory
81
1
546 people solved
Jul 27, 2025
Confluent logo
Confluent
Medium
Software Engineer

Rank songs by pairwise user preferences

You are given preference rankings for n users over m songs. Each song is labeled from 0 to m - 1. For each user i (0-indexed), you are given an array ...

Coding & AlgorithmsSorting
42
0
291 people solved
Nov 30, 2025
Spotify logo
Spotify
Medium
Backend Engineer

Longest Contiguous Stretch of Distinct Characters in a String

Given a string s, return the length of the longest substring of s in which every character differs from every other character. A substring is a contig...

Coding & AlgorithmsTwo Pointers & Sliding Window
1
0
17 people solved
Jul 7, 2026
Snowflake logo
Snowflake
Medium
Software Engineer

Most Frequent k Words or Bestselling Titles with Alphabetical Tie-Breaks

Given a list of items, such as the words in a stream of text (the hot words) or the book titles in a list of sales (the bestsellers), return the k ite...

Coding & AlgorithmsHeaps & Priority QueuesSorting
5
0
36 people solved
Apr 28, 2026
Amazon logo
AmazonMicrosoftMeesho

Also asked at Meesho, Google, Deutsche Bank

Hard
Software Engineer

Split All Values into Two Equal-Average Groups

Problem Assign every occurrence in nums to one of two nonempty groups. Return whether the groups can have exactly equal arithmetic means. The grouping...

Coding & AlgorithmsDynamic ProgrammingMath & Number Theory
0
0
11 people solved
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