Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions

154

Companies

980

Updated

11.05.2026

154 Questions 980 Companies11.05.2026

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

GoogleBloombergMicrosoft

Medium

Software Engineer

Recover a Signed Value among Threefold Repetitions

Problem Every value in nums appears exactly three times except one value that appears once. Return that value. Your solution must take linear time and...

Coding & AlgorithmsBit Manipulation

Add Two Binary Digit Strings

Problem The strings first and second represent nonnegative integers in base two. Return their sum as a binary digit string, using the usual representa...

Coding & AlgorithmsMath & Number TheoryArrays & Strings

21 people solved

Goldman Sachs

Medium

Quantitative Researcher

Minimum-Cost Round Trip Visiting Every City Once with Asymmetric Costs

A salesperson must visit n cities. The cost of traveling directly from city i to city j is dist[i][j], and every city can be reached directly from eve...

Coding & AlgorithmsDynamic ProgrammingBit Manipulation

Fewest Stones Left After Merging Equal-Level Pairs

You are carrying a collection of stones, and each stone has a level, which is a positive integer. Two stones with the same level x can be merged into ...

Coding & AlgorithmsArrays & StringsBit Manipulation

Software EngineerNew Grad

Find the n-th binary string ordered by length, then lexicographically

List every string made of the characters 0 and 1, shortest first, with strings of the same length in lexicographic order: the empty string, 0, 1, 00, ...

Coding & AlgorithmsMath & Number TheoryBit Manipulation

Software EngineerSenior+ Locked

Fewest Add-or-Subtract Power-of-Two Steps to Reduce n to Zero

An integer problem: reduce a positive n to zero with the fewest operations, where each operation adds or subtracts a power of two. It tests reasoning ...

Coding & AlgorithmsBit ManipulationGreedy

Count Set Bits in a Positive Signed Integer

Problem Return the number of set bits in the binary representation of a positive integer n, also called its Hamming weight. `cpp int hammingWeight(int...

Coding & AlgorithmsBit Manipulation

20 people solved

Virtu Financial

Hard

Quantitative Researcher

Heaviest Plate Subset Within a Barbell Capacity, Up to 42 Plates

You have n barbell plates with weights weights[0], ..., weights[n - 1], and a barbell that can hold a total weight of at most max_capacity. Choose a s...

Coding & AlgorithmsBacktracking & Recursion

Sum the Binary Numbers Spelled by Root-to-Leaf Paths in a 0/1 Tree

You are given a binary tree in which every node holds the bit 0 or 1. Each path from the root down to a leaf spells a binary number, read with the roo...

Coding & AlgorithmsTrees

56 people solved

Oct 7, 2026

BloombergGoogleAmazon

Easy

Software Engineer

Reverse All Bits of an Even Signed Integer

Problem Reverse the order of all 32 bits in the given signed-integer input and return the signed integer representing that reversed pattern. Leading z...

Coding & AlgorithmsBit Manipulation

Count Distinct Preferred-Hat Assignments

Problem There are n people and hat labels 1..40. Person i must receive one label in hats[i], and no label may be assigned to two people. Count the ass...

Coding & AlgorithmsDynamic ProgrammingBit Manipulation

24 people solved

Nebius

Medium

Software EngineerIntern

Solve four coding problems

The interview included four independent coding problems: 1. Longest all-healthy service streak You are given the daily health-check results for mul...

Coding & AlgorithmsArrays & StringsTwo Pointers & Sliding Window

Recover the Value Left after Pair Cancellation

Problem In a nonempty integer array, every distinct value occurs exactly twice except one value that occurs once. Return the single-occurrence value. ...

Coding & AlgorithmsBit Manipulation

Expected Spins of an Unequal Spinner to Land in K Distinct Regions

A spinner has $N$ regions. Each spin lands in region $i$ with probability $p_i$, independently of all other spins, where $p_1 + p_2 + \dots + p_N = 1$...

Statistics & MathProbabilityDynamic Programming

Software EngineerNew Grad

Implement streaming RLE and bit-packed codec

You are implementing a simple compression scheme for sequences of 32‑bit signed integers. The codec should support two encoding strategies: 1. Run‑Len...

Coding & AlgorithmsData Structure DesignBit Manipulation

Find the Single Repeated Value Among n + 1 Integers Drawn from 1 to n

You are given an array nums of n + 1 integers, each between 1 and n inclusive. Because there are more entries than possible values, some value must ap...

Coding & AlgorithmsLinked ListsBinary Search

Android Engineer Locked

Jetpack Compose Auto-Scrolling List with a Start/Stop Toggle and Hex Color Switching

Build an Android screen in Jetpack Compose with a list that scrolls by itself, a one-tap control that starts and stops the motion, and a one-tap contr...

Software Engineering FundamentalsAndroid

Implement IPv4 iterators and CIDR expansion

Problem: IPv4 Iterators and CIDR Expansion You are implementing utilities to iterate over IPv4 addresses. An IPv4 address is in dotted-decimal form: A...

Coding & AlgorithmsBit ManipulationData Structure Design

Software Engineer Locked

Does a Seven-Segment LED Digit Display Read the Same Rotated 180 Degrees?

Decide whether a row of digits on a seven-segment LED display reads the same after the whole display is rotated by 180 degrees. Tests modeling each di...

Coding & AlgorithmsArrays & Strings

Find the Missing Value in a Complete Integer Range

Find the Missing Value in a Complete Integer Range An array nums contains n distinct integers chosen from the inclusive range [0, n]. Exactly one valu...

Coding & AlgorithmsMath & Number TheoryBit Manipulation

12 people solved

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Tech Interview Questions

Recover a Signed Value among Threefold Repetitions

Add Two Binary Digit Strings

Minimum-Cost Round Trip Visiting Every City Once with Asymmetric Costs

Fewest Stones Left After Merging Equal-Level Pairs

Find the n-th binary string ordered by length, then lexicographically

Fewest Add-or-Subtract Power-of-Two Steps to Reduce n to Zero

Count Set Bits in a Positive Signed Integer

Heaviest Plate Subset Within a Barbell Capacity, Up to 42 Plates

Sum the Binary Numbers Spelled by Root-to-Leaf Paths in a 0/1 Tree

Reverse All Bits of an Even Signed Integer

Count Distinct Preferred-Hat Assignments

Solve four coding problems

Recover the Value Left after Pair Cancellation

Expected Spins of an Unequal Spinner to Land in K Distinct Regions

Implement streaming RLE and bit-packed codec

Find the Single Repeated Value Among n + 1 Integers Drawn from 1 to n

Jetpack Compose Auto-Scrolling List with a Start/Stop Toggle and Hex Color Switching

Implement IPv4 iterators and CIDR expansion

Does a Seven-Segment LED Digit Display Read the Same Rotated 180 Degrees?

Find the Missing Value in a Complete Integer Range

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