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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
Amazon logo
AmazonTikTok
Medium
Software Engineer

Fewest Arbitrary Swaps for One Block of Ones

Problem In the binary array data, swap any two positions per operation. Return the minimum swaps needed so every 1 lies in one contiguous block somewh...

Coding & AlgorithmsTwo Pointers & Sliding WindowGreedy
0
0
9 people solved
Google logo
GoogleAmazon
Medium
Software Engineer

Maximum Value Reachable Under Directional Jumps

Problem You are given an integer array nums. Starting at index i, a jump to a different index j is allowed under exactly these rules: - If j > i, then...

Coding & AlgorithmsGraphsArrays & Strings
1
0
15 people solved
SIG (Susquehanna) logo
SIG (Susquehanna)
Medium
Software Engineer

Solve theatre seating and ticker extraction

Implement the following two coding tasks. 1. Allocate groups in a movie theater You are given an integer n representing the number of rows in a movie ...

Coding & AlgorithmsGreedyArrays & Strings
13
0
250 people solved
Jan 6, 2026
Amazon logo
Amazon
Hard
Software EngineerIntern

Count unique Morse-code word transformations

Given an array of lowercase strings words. Each letter 'a' to 'z' has a corresponding Morse code string (standard 26-letter mapping). A word’s transfo...

Coding & AlgorithmsArrays & Strings
13
0
136 people solved
Jan 15, 2026
Amazon logo
AmazonGoogleMicrosoft

Also asked at Microsoft, Bloomberg, Goldman Sachs

Medium
Software Engineer

Count Fixed-Length Windows Meeting an Average Threshold

Problem Return the number of contiguous subarrays of exactly k elements whose arithmetic mean is at least threshold. Averages need not be integers. `c...

Coding & AlgorithmsTwo Pointers & Sliding WindowArrays & Strings
1
0
11 people solved
Amazon logo
AmazonPublicis SapientGeico
Medium
Software Engineer

Build the Greatest Non-Leading-Zero Palindrome from Available Digits

Problem Choose at least one digit occurrence from string num, leaving others unused if you wish. Rearrange the chosen digits into a palindrome and ret...

Coding & AlgorithmsGreedyArrays & Strings
1
0
9 people solved
Stripe logo
Stripe
Hard
Software Engineer Locked

Calculate Per-User Usage Charges

This question evaluates algorithmic data aggregation, numeric billing computations, and the ability to model proration and threshold semantics across ...

Coding & AlgorithmsArrays & Strings
22
0
202 people solved
Jan 3, 2026
Google logo
GoogleMicrosoft
Easy
Software Engineer

Expand Each Positive Integer into Its Ordered Decimal Digits

Problem Replace every positive number in nums by its decimal digits, from most significant to least significant. Concatenate these digit sequences in ...

Coding & AlgorithmsArrays & StringsMath & Number Theory
1
0
9 people solved
Amazon logo
Amazon
Medium
Software Engineer

Minimum Adjacent Swaps to Place White Balls Before Black Balls

Minimum Adjacent Swaps to Place White Balls Before Black Balls There are n balls arranged in a line. A 0-indexed binary string s describes their color...

Coding & AlgorithmsGreedyArrays & Strings
1
0
8 people solved
Meta logo
Meta
Medium
Software Engineer

Solve Four Online Assessment Problems

Complete the following four independent coding tasks. For each task, write a function that returns the requested result. 1. Find the best value index ...

Coding & AlgorithmsGrids & MatricesIntervals & Scheduling
16
0
132 people solved
Mar 19, 2026
Google logo
GoogleMetaMicrosoft

Also asked at Microsoft, Amazon, TCS, Bloomberg

Easy
Software Engineer

Inclusive Running Sums of an Integer Array

Problem Return an array whose entry i equals the sum of the original entries nums[0] through nums[i],inclusive. `cpp class Solution { public: vect...

Coding & AlgorithmsArrays & Strings
0
0
6 people solved
Amazon logo
Amazon
Hard
Software Engineer

Maximize the Difference between Two Present Letter Counts

Problem For a nonempty contiguous substring of lowercase string s, choose two letters present in that substring and subtract the smaller occurrence co...

Coding & AlgorithmsDynamic ProgrammingArrays & Strings
0
0
10 people solved
Microsoft logo
Microsoft
Medium
Software Engineer

Solve load balancing and perfect pairs

1) Contiguous load balancing: You have n identical resources (servers) and m ordered tasks with processing times burstTime[0..m-1]. Each server must b...

Coding & AlgorithmsBinary SearchArrays & Strings
37
0
241 people solved
Sep 6, 2025
Amazon logo
AmazonGoogleBloomberg
Medium
Software Engineer

Fewest Keypresses After Remapping Letters That May Repeat

Fewest Keypresses After Remapping Letters That May Repeat You are given a string word of lowercase English letters. Letters may occur more than once. ...

Coding & AlgorithmsGreedySorting
0
0
8 people solved
TCS logo
TCSMeta
Easy
Software Engineer

Find All Strict Interior Peak Indices

Find All Strict Interior Peak Indices You are given a 0-indexed integer array mountain. An interior index i is a peak when its value is strictly great...

Coding & AlgorithmsArrays & Strings
1
0
10 people solved
Snapchat logo
Snapchat
Hard
Software Engineer

Count ways to decode digit string

You are given a string s consisting of digits '0' to '9'. The string encodes a message using the following mapping: - '1' → A, '2' → B, ..., '26' → Z....

Coding & AlgorithmsDynamic Programming
20
0
137 people solved
Dec 8, 2025
InMobi logo
InMobiGoogleMeta

Also asked at Meta, Microsoft, Amazon, Bloomberg

Hard
Software Engineer

Maximum Sum of an Increasing-Decreasing-Increasing Subarray

Problem You are given an integer array nums. Consider a contiguous subarray nums[l...r] for which there are indices l < p < q < r such that: - nums[l....

Coding & AlgorithmsDynamic ProgrammingArrays & Strings
0
0
6 people solved
Google logo
GoogleMetaMicrosoftBloomberg

Also asked at Microsoft, Bloomberg

Easy
Software Engineer

Largest Value in Exactly One Fixed-Length Subarray

Problem You are given an integer array nums and an integer k. Call a value almost missing if it is present in exactly one contiguous subarray of lengt...

Coding & AlgorithmsArrays & Strings
0
0
5 people solved
Netflix logo
Netflix
Medium
Software Engineer

Dedupe titles in per-shelf viewport

You are rendering a streaming app home page. - The home page consists of shelves displayed from top to bottom. - Each shelf contains a list of titleId...

Coding & AlgorithmsArrays & StringsSimulation & State Machines
19
1
163 people solved
Jan 22, 2026
Palantir logo
Palantir
Medium
Software Engineer

Solve two algorithm problems from a menu

Choose two problems from an algorithms menu (arrays, strings, hash maps, graphs). For each: 1) state clarifying assumptions, 2) implement a correct so...

Coding & AlgorithmsArrays & StringsGraphs
31
0
302 people solved
Jul 26, 2025
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