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

InfosysGoogleMicrosoft

Medium

Software Engineer

Count the Fewest Character Edits

Problem Return the fewest single-character edits needed to change the string before into the string after. One edit may insert a character, delete a c...

Coding & AlgorithmsDynamic Programming

Fastest 1000 Meters: Max Average Speed from 5-Second Distance Splits

A runner's workout is recorded as a list of integers distances, where distances[i] is the number of meters covered during the i-th consecutive 5-secon...

Coding & AlgorithmsTwo Pointers & Sliding Window

597 people solved

Sep 26, 2026

GoogleBloombergAmazon

Medium

Software Engineer

Read a Down-and-Up Character Layout by Row

Problem Convert the string text by placing its characters into rowCount rows. Start at the top row, travel down one row for each successive character,...

Coding & AlgorithmsArrays & StringsSimulation & State Machines

65 people solved

AmazonGoogleBloomberg

Medium

Software Engineer

Manually Parse a Bounded Integer

Problem Parse the string text manually and return a signed 32-bit integer using these rules: 1. Advance past any ASCII spaces (U+0020) at the beginnin...

Coding & AlgorithmsParsing & InterpretersArrays & Strings

70 people solved

Goldman Sachs

Medium

Software EngineerNew Grad

Rearrange an Array to Minimize the Sum of Distinct Counts over All Prefixes

You are given an integer array nums and may rearrange its elements into any order. For an arrangement a of length n, its cost is the sum, over every p...

Coding & AlgorithmsGreedySorting

Test-Drive a Set in Java Without java.util Using Strict Red-Green-Refactor

In a 60-minute collaborative pairing interview you test-drive a set in Java with JUnit, without using anything from java.util. The interviewer shares ...

Software Engineering FundamentalsTesting & QualityData Structure Design

Evaluate a Guaranteed-Valid Roman Numeral

Problem The string numeral is guaranteed to be a valid Roman numeral representing an integer from 1 through 3999. Return that integer. The symbols hav...

Coding & AlgorithmsMath & Number TheoryArrays & Strings

Minimum Priority Conflicts When Interleaving Two Lowercase Strings

You are given two strings, primary (length m) and secondary (length n), made of lowercase English letters. Merge them into one string of length m + n ...

Coding & AlgorithmsDynamic Programming

Find deployable slots in a recurring week from allowed and freeze windows

A deployment scheduler works on a recurring week of 10,080 minutes (7 days of 24 hours of 60 minutes). Minute 0 is the start of the week, and the same...

Coding & AlgorithmsIntervals & Scheduling

520 people solved

Sep 25, 2026

Medium

Machine Learning EngineerSenior+

Sum Every Element of a k-Dimensional Array Readable Only Through get(indices)

You are given a k-dimensional array and a list dimensions, where dimensions[d] is the size of dimension d. The only way to read an element is to call ...

Software Engineering FundamentalsBacktracking & Recursion

Match Payments to Invoices by Memo ID, Exact Amount, then Amount Tolerance

You are given one payment record and a list of invoice records, each encoded as a string. Parse them, find the invoice the payment should be applied t...

Software Engineering FundamentalsCode Quality & MaintainabilityPayments & Ledgers

Merge Overlapping Collinear Lane Segments Given as Integer Point Lists

Lane geometry is given as a list of straight lane segments. Each segment is a list of integer points [x, y] that all lie on one straight line, listed ...

Coding & AlgorithmsIntervals & SchedulingMath & Number Theory

Which Recipes Can Be Made When Ingredients Can Themselves Be Recipes

A kitchen has an unlimited stock of some basic supplies and a book of recipes. Each recipe has a unique name and a list of ingredients. An ingredient ...

Coding & AlgorithmsGraphs

266 people solved

Oct 9, 2026

Easy

Machine Learning EngineerIntern

Length of the Longest Run of One Repeated Character in a String

Given a string, return the length of its longest run: the longest stretch of consecutive positions that all hold the same character. Function Signatur...

Coding & AlgorithmsArrays & Strings

First and Last Indices of a Value

Problem You receive an integer array values in non-decreasing order and an integer key. Return a two-element array containing the zero-based indices o...

Coding & AlgorithmsBinary Search

51 people solved

ByteDance

Medium

Software EngineerNew Grad

Shortest One-Letter-at-a-Time Transformation Between Two Words

You are given two words, begin_word and end_word, and a list of words word_list. All of the words have the same length and consist of lowercase Englis...

Coding & AlgorithmsGraphs

33 people solved

Oct 24, 2026

GoogleMicrosoftAmazon

Medium

Software Engineer

Enumerate Telephone-Keypad Letter Choices

Problem The string keys contains telephone-keypad digits. Return every letter string obtained by choosing one mapped letter for each digit, preserving...

Coding & AlgorithmsBacktracking & Recursion

48 people solved

OpenAI

Medium

Software Engineer Locked

Three-Card Game: Deal Hands, Rank Them, Then Add a Flush Category

A two-part card game coding exercise: deal three cards to each player from one deck, show every hand and pick the winner using three of a kind, pair a...

Software Engineering FundamentalsLow-Level Design (OOP)Testing & Quality

Repeatedly Delete Adjacent Duplicate Pairs or Whole Runs of Equal Characters

You are given a string s of lowercase letters and a flag remove_whole_runs. Delete adjacent duplicates repeatedly until none remain, and return the fi...

Coding & AlgorithmsStacks & QueuesArrays & Strings

Software EngineerNew Grad

Every MEX Reachable With At Most One Bounded Increment

A system has n memory blocks. Block i holds an integer value memory_blocks[i], and every value satisfies 0 <= memory_blocks[i] < n. You may perform at...

Coding & AlgorithmsArrays & Strings

429 people solved

Oct 2, 2026

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Tech Interview Questions

Count the Fewest Character Edits

Fastest 1000 Meters: Max Average Speed from 5-Second Distance Splits

Read a Down-and-Up Character Layout by Row

Manually Parse a Bounded Integer

Rearrange an Array to Minimize the Sum of Distinct Counts over All Prefixes

Test-Drive a Set in Java Without java.util Using Strict Red-Green-Refactor

Evaluate a Guaranteed-Valid Roman Numeral

Minimum Priority Conflicts When Interleaving Two Lowercase Strings

Find deployable slots in a recurring week from allowed and freeze windows

Sum Every Element of a k-Dimensional Array Readable Only Through get(indices)

Match Payments to Invoices by Memo ID, Exact Amount, then Amount Tolerance

Merge Overlapping Collinear Lane Segments Given as Integer Point Lists

Which Recipes Can Be Made When Ingredients Can Themselves Be Recipes

Length of the Longest Run of One Repeated Character in a String

First and Last Indices of a Value

Shortest One-Letter-at-a-Time Transformation Between Two Words

Enumerate Telephone-Keypad Letter Choices

Three-Card Game: Deal Hands, Rank Them, Then Add a Flush Category

Repeatedly Delete Adjacent Duplicate Pairs or Whole Runs of Equal Characters

Every MEX Reachable With At Most One Bounded Increment

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