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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
Goldman Sachs logo
Goldman SachsMicrosoftGoogle

Also asked at Google, Palantir, PayPal, Bloomberg, Rubrik

Medium
Software Engineer

Smallest String Reachable Through Allowed Index Swaps

Problem Each pair gives two zero-based positions whose characters may be swapped any number of times. Return the lexicographically smallest string rea...

Coding & AlgorithmsGraphsSorting
0
0
12 people solved
Yandex logo
YandexAdobeRoblox

Also asked at Roblox, VK, Amazon, Google, Snowflake, Samsung, Apple

Medium
Software Engineer

Choose an Empty Seat with the Best Nearest-Neighbor Distance

Problem seats marks occupied positions with 1 and empty positions with 0. Choose an empty position to maximize its index distance to the closest occup...

Coding & AlgorithmsTwo Pointers & Sliding WindowArrays & Strings
1
0
11 people solved
Netflix logo
Netflix
Medium
Software Engineer Locked

Design Prefix-Aware Deduplication for Homepage Content Rows

Design homepage row construction that prevents content duplication across protected prefixes while retaining candidate order and within-row uniqueness...

Software Engineering FundamentalsArrays & StringsData Structure Design
16
0
133 people solved
Jul 31, 2026
Ninjatrader logo
Ninjatrader
Hard
Software Engineer

Server Log Analyzer: Parse JSON Lines, Summarize Latency, Flag Per-Minute Anomalies

Complete a small server-log analyzer in Python. The online IDE provides three files: server.log (a sample log), analyzer_stub.py (skeleton code with t...

Software Engineering FundamentalsObservabilityBatch & Stream Processing
7
0
47 people solved
Sep 9, 2026
Microsoft logo
MicrosoftAtlassianAmazon

Also asked at Amazon, Google, Salesforce

Hard
Software Engineer

Minimum Sum of Daily Job-Difficulty Maxima

Problem Finish the jobs in their given dependency order over exactly d days, completing at least one job each day. Each day costs the maximum difficul...

Coding & AlgorithmsDynamic ProgrammingArrays & Strings
0
0
11 people solved
Google logo
Google
Medium
Software Engineer Locked

Calculate Highway Tolls from Ordered Checkpoint Logs

Calculate a day's total highway toll from chronologically ordered vehicle checkpoint logs, charging every consecutive recorded segment even when a veh...

Coding & AlgorithmsArrays & Strings
80
4
882 people solved
Aug 12, 2026
Instacart logo
Instacart
Medium
Software Engineer Locked

Calculate a Basket Total from Delimited Product Records

Parse SKU, product, quantity, and integer-cent prices to calculate a basket total, with repeated records, zero quantities, and exact integer arithmeti...

Coding & AlgorithmsParsing & InterpretersArrays & Strings
6
0
113 people solved
Sep 6, 2026
Palantir logo
PalantirGoogleMicrosoftBloomberg

Also asked at Microsoft, Bloomberg

Medium
Software Engineer

Find Pattern Starts with a Nearby Second Pattern

Find Pattern Starts with a Nearby Second Pattern You are given a 0-indexed string s, strings a and b, and an integer k. Return every index i satisfyin...

Coding & AlgorithmsTwo Pointers & Sliding WindowArrays & Strings
2
0
33 people solved
Capital One logo
Capital One
Medium
Software Engineer

Find the First Array Element Smaller Than Both of Its Neighbors

Given an array of integers, find the first element, scanning from left to right, whose two adjacent neighbors are both strictly larger than it. Functi...

Coding & AlgorithmsArrays & Strings
5
0
42 people solved
Aug 4, 2026
Bloomberg logo
BloombergGoogleMeta

Also asked at Meta, Adobe, Amazon, Microsoft, Zoho

Easy
Software Engineer

Order Integers by Rarity and Descending Ties

Problem Return the entries of nums ordered by increasing occurrence count. When two different values occur equally often, the larger value must come f...

Coding & AlgorithmsSortingArrays & Strings
1
0
13 people solved
Amazon logo
AmazonGoogleMeta

Also asked at Meta, Grammarly, Bloomberg, Microsoft, LinkedIn

Medium
Software Engineer

Find Distinct Repeated Ten-Base DNA Windows

Problem Return every distinct length-10 substring that occurs more than once in the DNA string s. Overlapping occurrences count. Include a repeated se...

Coding & AlgorithmsArrays & StringsTwo Pointers & Sliding Window
0
0
9 people solved
Google logo
GoogleMicrosoftAmazon

Also asked at Amazon, Bloomberg, HashedIn, Roblox, Meta, Salesforce, Infosys, Uber, TikTok, ServiceNow, Capital One

Hard
Software Engineer

Count Contiguous Subarrays with Exactly K Distinct Values

Problem Return the number of nonempty contiguous subarrays of nums containing exactly k different integers. Different index intervals count separately...

Coding & AlgorithmsTwo Pointers & Sliding WindowArrays & Strings
1
0
18 people solved
Amazon logo
AmazonGoogleMicrosoft

Also asked at Microsoft, Meta, Bloomberg, TCS, Criteo, GitHub

Easy
Software Engineer

Identify the Duplicated and Missing Set Values

Problem An original set 1..n lost one value when it was replaced by another existing value. Given the resulting n-element array nums, return [duplicat...

Coding & AlgorithmsArrays & Strings
0
0
11 people solved
Indeed logo
Indeed
Medium
Software Engineer Locked

Compare Arrays and Linked Lists for Indexed Operations

Compare arrays, linked lists, and unrolled lists across indexed access, insertion, allocation, cache locality, and position-search costs.

Software Engineering FundamentalsLinked ListsArrays & Strings
4
0
34 people solved
Sep 16, 2026
Oracle logo
Oracle
Medium
Software Engineer

Count anagram-based replacements per phrase

Problem You are given: - phrases: a list of strings, where each string is a phrase containing words separated by single spaces. - words: a list of str...

Coding & AlgorithmsArrays & Strings
26
0
188 people solved
Dec 15, 2025
Amazon logo
AmazonGoogleMicrosoft

Also asked at Microsoft, Meta, Bloomberg, PhonePe, BNY Mellon, Goldman Sachs, Ripple, Waymo

Medium
Software Engineer

Count Fleets Reaching a Common Destination

Problem Cars start at distinct positions below target and move toward it at their positive speeds. A car cannot pass another; after catching a car or ...

Coding & AlgorithmsStacks & QueuesSorting
0
0
11 people solved
Google logo
GoogleBloombergMicrosoft

Also asked at Microsoft, Amazon, Meta

Hard
Software Engineer

Count Distinct Nonempty Subsequences of a Lowercase String

Problem Return the number of different nonempty strings obtainable from s by deleting characters while preserving the order of those retained. Equal r...

Coding & AlgorithmsDynamic ProgrammingArrays & Strings
1
0
12 people solved
Snowflake logo
Snowflake
Medium
Software Engineer

Assign Each Person the Nearest Cake in a One-Dimensional Row

People and cakes stand in a single row of positions, described by an integer array whose values are 0, 1 or 2. The original question asks for the clos...

Coding & AlgorithmsArrays & Strings
3
0
42 people solved
Apr 28, 2026
Juspay logo
JuspayAmazonGoogle

Also asked at Google, Microsoft, Bloomberg, TCS

Hard
Software Engineer

Fewest Replacements for a Consecutive Set

Problem One operation replaces any entry of nums with any integer. Return the fewest replacements needed to make all n entries distinct with maximum m...

Coding & AlgorithmsTwo Pointers & Sliding WindowSorting
0
0
17 people solved
Agoda logo
Agoda
Easy
Data EngineerSenior+ Locked

Count Integers That Appear Exactly Once

Count distinct integers with frequency exactly one using complete occurrence counts, including empty arrays and separated duplicates.

Coding & AlgorithmsArrays & Strings
3
0
39 people solved
Sep 11, 2026
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