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

"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_

"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"

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

"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."

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

"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."

CarlosFull Stack, Shopify

"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."

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."

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

"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."

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

"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."

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

"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."

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

_The_TaNk_

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

"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."

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

CarlosFull Stack, Shopify

"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."

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."

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

"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."

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

"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."

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

"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."

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

GoogleAgodaOracle

Easy

Software Engineer

Find the Shortest Segment Preserving Array Degree

Problem The degree of nums is its highest value frequency. Return the minimum length of a contiguous subarray having the same degree as the entire arr...

Coding & AlgorithmsArrays & Strings

Square a Sorted Array and Return the Squares in Order

Problem Given nums in nondecreasing order, return every value squared, also in nondecreasing order. Negative values may cause squared values to appear...

Coding & AlgorithmsTwo Pointers & Sliding WindowArrays & Strings

Fetch a Remote Text File and Compute Mean, Median and Mode of Employee Counts

In a coding interview without AI assistance, you are asked to write a Python program that fetches data from a remote plain-text file and computes the ...

Software Engineering FundamentalsAPI Integration & HTTP ClientsData Cleaning & Wrangling

Length of a Longest Shared Subsequence

Problem Return the maximum length of a sequence appearing in both text1 and text2 after deleting zero or more characters without reordering those left...

Coding & AlgorithmsDynamic ProgrammingArrays & Strings

Return Distinct Values Shared by Two Arrays

Problem Return every value that appears in both nums1 and nums2, exactly once. The source accepts any output order. `cpp vector<int> intersection(vect...

Coding & AlgorithmsArrays & Strings

16 people solved

Medium

Software EngineerSenior+

Maximum Product of a Contiguous Subarray With Negatives and Zeros

Given an integer array nums, return the largest product obtained by multiplying the elements of a non-empty contiguous subarray. The array can contain...

Coding & AlgorithmsDynamic Programming

Logger with Remove, Truncate, Uppercase and Store Handlers and Stored-Message Search

Build a logger that passes every logged message to a set of handlers. The logger must support four handler types: - Remove: removes every occurrence o...

Software Engineering FundamentalsLow-Level Design (OOP)Arrays & Strings

25 people solved

Aug 9, 2026

AmazonIBMGoldman Sachs

Medium

Software Engineer

Count Palindrome Occurrences among Contiguous Substrings

Problem Return the number of nonempty contiguous substrings of s that read the same forward and backward. Different start/end ranges count separately ...

Coding & AlgorithmsTwo Pointers & Sliding WindowArrays & Strings

Generate Account Email Notifications

You are building an email notification scheduler for user accounts. You are given: 1. A list of user accounts. Each account has: - account_id - ...

Coding & AlgorithmsArrays & Strings

Software Engineer Locked

Find the Top Ten Words When a Book Exceeds Memory

Count top words in a large book using streaming tokenization, external aggregation, distributed recovery, and correct global top-ten selection.

System DesignBatch & Stream Processing

165 people solved

Sep 17, 2026

AmazonBloombergPinterest

Medium

Software Engineer

Multiply Two Decimal Digit Strings

Problem You receive two decimal digit strings, left and right, representing nonnegative integers. Return their exact product in decimal notation as a ...

Coding & AlgorithmsMath & Number TheoryArrays & Strings

17 people solved

AppleMicrosoftDatabricks

Medium

Software Engineer Locked

Implement a Five-Minute Hit Counter

Implement a HitCounter with two operations:. Make the API or object boundaries explicit, then cover invariants, edge cases, testing strategy, and oper...

Software Engineering FundamentalsData Structure DesignStacks & Queues

Find Array Elements Uniquely Determined by Known Range Sums

An integer array A of length n is hidden from you; its positions are numbered 1 to n. You are given a list of ranges (L, R), and the sum A[L] + A[L+1]...

Coding & AlgorithmsGraphsArrays & Strings

70 people solved

Aug 21, 2026

Find the Unique Pair of Array Indices Whose Values Sum to a Target

Given an array of integers nums and an integer target, return the indices of the two different elements whose values add up to target. Function Signat...

Coding & AlgorithmsArrays & Strings

84 people solved

Sep 14, 2026

Hard

Machine Learning Engineer

Sum Every Element of an N-Dimensional Array Readable Only by Index Lists

You are given an object m of type MultiDimArray that represents an array with an arbitrary number of dimensions. How the elements are stored is hidden...

Coding & AlgorithmsBacktracking & Recursion

Software Engineer Locked

Count Equal-Difference Triples After Each Add or Remove-All Operation

Process a stream of add-one and remove-all operations on a multiset and report, after each operation, how many element triples form an arithmetic prog...

Coding & AlgorithmsArrays & Strings

Validate Parentheses with Optional Wildcard Characters

Problem Return whether s can become a balanced parenthesis string by independently treating each * as (, ), or the empty string. Every closing parenth...

Coding & AlgorithmsGreedyStacks & Queues

Split Markdown Into Header-Aware Chunks

Implement a function that splits a Markdown document into ordered chunks, where each chunk must not exceed a given size limit. A Markdown header is a ...

Coding & AlgorithmsParsing & InterpretersArrays & Strings

649 people solved

Apr 3, 2026

AmazonGoogleBloomberg

Medium

Frontend Engineer

Maximize the number of binary strings chosen under zero and one budgets

You are given a list of binary strings and two budgets: at most max_zeros characters '0' and at most max_ones characters '1' in total. Choose a subset...

Coding & AlgorithmsDynamic Programming

Count Days until a Strictly Warmer Reading

Problem For each day, return how many days pass before the first later temperature strictly greater than that day's reading. Return zero when there is...

Coding & AlgorithmsStacks & QueuesArrays & Strings

17 people solved

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Tech Interview Questions

Find the Shortest Segment Preserving Array Degree

Square a Sorted Array and Return the Squares in Order

Fetch a Remote Text File and Compute Mean, Median and Mode of Employee Counts

Length of a Longest Shared Subsequence

Return Distinct Values Shared by Two Arrays

Maximum Product of a Contiguous Subarray With Negatives and Zeros

Logger with Remove, Truncate, Uppercase and Store Handlers and Stored-Message Search

Count Palindrome Occurrences among Contiguous Substrings

Generate Account Email Notifications

Find the Top Ten Words When a Book Exceeds Memory

Multiply Two Decimal Digit Strings

Implement a Five-Minute Hit Counter

Find Array Elements Uniquely Determined by Known Range Sums

Find the Unique Pair of Array Indices Whose Values Sum to a Target

Sum Every Element of an N-Dimensional Array Readable Only by Index Lists

Count Equal-Difference Triples After Each Add or Remove-All Operation

Validate Parentheses with Optional Wildcard Characters

Split Markdown Into Header-Aware Chunks

Maximize the number of binary strings chosen under zero and one budgets

Count Days until a Strictly Warmer Reading

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