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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
Databricks logo
Databricks
Medium
Software EngineerSenior+

Implement RLE and bit-packing compression

You are asked to implement two related compression/decompression schemes: Run-Length Encoding (RLE) and bit-packing. --- Part 1 — Run-Length Encoding ...

Coding & AlgorithmsArrays & StringsBit Manipulation
79
2
540 people solved
Oct 10, 2025
Microsoft logo
Microsoft
Hard
Software Engineer

Top k most frequent values with a deterministic tie order

Given a list of integers and a number k, return the k values that occur most often in the list. The report names this problem without further detail; ...

Coding & AlgorithmsHeaps & Priority QueuesSorting
0
0
11 people solved
Aug 5, 2026
Amazon logo
AmazonWalmart LabsSalesforce

Also asked at Salesforce, PayPal, Agoda, Bloomberg, Google, Microsoft, IBM, Oracle, Meta, JPMorgan Chase, NVIDIA

Easy
Software Engineer

All Closest Pairs of Distinct Array Values

Problem Given distinct integers arr, find the minimum absolute difference between any two values. Return every pair [a,b] attaining it, with a<b, and ...

Coding & AlgorithmsSortingArrays & Strings
0
0
8 people solved
Meta logo
Meta
Easy
Software Engineer

Implement four coding challenges

You are asked to solve the following four independent coding problems. --- 1) Block Placement Simulator (Tetris-like) You have an empty n x m grid (ro...

Coding & AlgorithmsSimulation & State MachinesArrays & Strings
16
0
147 people solved
Feb 8, 2026
Google logo
GoogleAmazonYandex

Also asked at Yandex, Meta, Bloomberg, DoorDash, Microsoft, Apple, LinkedIn, Coupang, Flipkart, TikTok, Uber, Salesforce, Cashfree

Medium
Software Engineer

Select the K Closest Sorted Values with Smaller-Value Ties

Problem From sorted arr return the k values closest to x, retaining repeated occurrences and sorting the output ascending. Compare absolute distance f...

Coding & AlgorithmsTwo Pointers & Sliding WindowArrays & Strings
1
0
11 people solved
Easy
Software EngineerIntern Locked

Count Failing, Passing and Distinction Scores from Percentage Thresholds

Given an array of student exam scores as percentages, count how many students failed with under 50, passed with 50 to 80 inclusive, or passed with dis...

Coding & AlgorithmsArrays & Strings
8
0
65 people solved
Sep 6, 2026
Duolingo logo
Duolingo
Hard
Software Engineer

Count Dictionary Originals Sharing an Encryption

Problem Implement an Encrypter object from distinct lowercase keys, their corresponding two-character values, and a dictionary of permitted original w...

Coding & AlgorithmsData Structure DesignArrays & Strings
2
0
16 people solved
Amazon logo
AmazonGoogleOracle

Also asked at Oracle, TikTok, Atlassian, PayPal, FactSet

Medium
Software Engineer

Count Song Pairs Whose Combined Duration Is a Multiple of Sixty

Problem For song durations in time, count index pairs i<j whose sum is divisible by60. Repeated durations still represent different songs at different...

Coding & AlgorithmsMath & Number TheoryArrays & Strings
2
0
15 people solved
Atlassian logo
Atlassian
Hard
Machine Learning Engineer Locked

Find a secret word using match feedback

This question evaluates algorithmic problem-solving, combinatorial reasoning, and information-theoretic search strategies for narrowing a secret from ...

Coding & AlgorithmsArrays & Strings
16
1
195 people solved
Mar 1, 2026
Meta logo
Meta
Medium
Software Engineer

Canonicalize an Absolute Unix-Style Path With Dot and Double-Dot Segments

Given an absolute path in a Unix-style file system, return its simplified canonical form. Function Signature `python def simplify_path(path: str) -> s...

Coding & AlgorithmsStacks & QueuesArrays & Strings
5
0
49 people solved
Sep 14, 2026
Airbnb logo
Airbnb
Hard
Software EngineerSenior+

Find valid split-stay listing combinations

You are building a feature that suggests a split stay: a guest stays in one home for the first part of a trip, then switches to a second home for the ...

Coding & AlgorithmsArrays & Strings
183
2
1190 people solved
Dec 20, 2025
Amazon logo
Amazon
Hard
Software EngineerIntern

Find the Largest Rating Threshold Supported by K Instances

Given an array of integer instance ratings, return the largest integer k such that at least k instances have ratings greater than or equal to k. Input...

Coding & AlgorithmsArrays & StringsSorting
4
0
72 people solved
Jan 8, 2026
Pinterest logo
Pinterest
Medium
Software Engineer Locked

Mark and Compact a Heap-Indexed Subtree

In a dense heap-indexed binary tree array, mark a target node and all indexed descendants with -1, then stable-compact the survivors. Return separate ...

Coding & AlgorithmsTreesArrays & Strings
9
0
141 people solved
Jul 2, 2026
Amazon logo
AmazonGoogleMetaHashedIn

Also asked at Meta, HashedIn

Hard
Software Engineer

Fewest Adjacent-or-Equal-Value Jumps to the Last Index

Problem Start at index 0. In one step, move to an in-bounds neighboring index or to any different index holding the same value. Return the minimum ste...

Coding & AlgorithmsGraphs
0
0
11 people solved
Hudson River Trading logo
Hudson River Trading
Medium
Software Engineer Locked

Split a Message into Length-Limited Parts with Numbered Suffixes

This Hudson River Trading software engineering question evaluates message splitting under strict length limits with numbered suffixes. It prepares can...

Software Engineering FundamentalsArrays & Strings
8
0
156 people solved
Jul 2, 2026
Circle logo
Circle
Hard
Software Engineer

Implement Recipe Storage CRUD

Implement an in-memory RecipeStore that supports CRUD operations for recipes. Each recipe contains: - id: a string identifier in the form recipe<n> - ...

Coding & AlgorithmsData Structure Design
21
0
215 people solved
Apr 2, 2026
Google logo
GoogleKaratPayPal

Also asked at PayPal, Meta, Microsoft, Bloomberg

Easy
Software Engineer

Total Length of Independently Formable Words

Problem For each word in words, determine whether its letters can be taken from chars, using each occurrence in chars at most once for that word. Rese...

Coding & AlgorithmsArrays & Strings
2
0
17 people solved
Oracle logo
Oracle
Medium
Software EngineerSenior+ Locked

Maximum of Fixed-Window Minimums

Find the maximum among all fixed-length sliding-window minima, handling negative values, duplicates, and boundary window sizes with a linear-time appr...

Coding & AlgorithmsTwo Pointers & Sliding WindowStacks & Queues
11
0
103 people solved
Sep 9, 2026
Google logo
GoogleMetaMicrosoftAmazon

Also asked at Microsoft, Amazon

Medium
Software Engineer

Shortest Combined Length of Two Disjoint Target-Sum Windows

Problem Find two nonempty,non-overlapping contiguous subarrays of arr, each summing to target. Return the smallest sum of their lengths,or -1 when no ...

Coding & AlgorithmsDynamic ProgrammingTwo Pointers & Sliding Window
0
0
8 people solved
Google logo
GoogleAmazonBloomberg

Also asked at Bloomberg, Meta, JPMorgan Chase, Walmart Labs, TCS

Medium
Software Engineer

Maximize a Fixed-Length Window Sum with No Repeated Values

Problem Among contiguous subarrays of nums with length exactly k and no repeated value, return the greatest sum. Return zero if no subarray satisfies ...

Coding & AlgorithmsTwo Pointers & Sliding WindowArrays & Strings
0
0
12 people solved
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