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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
Two Sigma logo
Two Sigma
Hard
Software Engineer

Implement binary encode/decode with frequency tree

Problem Implement a binary encoding and decoding scheme for strings based on character frequencies (Huffman-like coding). You must implement two funct...

Coding & AlgorithmsHeaps & Priority QueuesTrees
17
0
261 people solved
Dec 15, 2025
Capital One logo
Capital One
Medium
Software EngineerSenior+

Simulate a Bank Ledger With Validated Transfers, Deposits and Withdrawals

A retail bank's core system keeps every account's balance in memory and must apply a stream of customer requests strictly in the order they arrive. Ea...

Coding & AlgorithmsSimulation & State Machines
1
0
22 people solved
Apr 19, 2026
DevRev logo
DevRevGoogleMicrosoft

Also asked at Microsoft, Amazon, Deshaw, Bloomberg

Medium
Software Engineer

Choose k Paired Indices to Maximize Sum Times Minimum

Problem Choose exactly k distinct indices shared by same-length arrays nums1 and nums2. The score is the sum of selected nums1 values multiplied by th...

Coding & AlgorithmsHeaps & Priority QueuesGreedy
0
0
8 people solved
Nielsen logo
NielsenAppleMeta

Also asked at Meta, Google, TikTok, Bloomberg, Amazon, Microsoft, Accenture

Medium
Software Engineer

Maximize an Integer with at Most One Digit Swap

Problem Return the greatest integer obtainable from num by swapping two decimal digit positions at most once. Leaving the digits unchanged is allowed....

Coding & AlgorithmsGreedyArrays & Strings
1
0
7 people solved
Microsoft logo
MicrosoftNVIDIAWeRide

Also asked at WeRide, UKG, Amazon, Oracle

Medium
Software Engineer

Maximize Strict Wins by Permuting the Same Multiset

Problem Rearrange the entries of nums into a permutation perm of those entries. Its greatness is the number of indices i with perm[i]>nums[i]. Return ...

Coding & AlgorithmsGreedySorting
0
0
7 people solved
Intercom logo
IntercomMicrosoft
Medium
Software Engineer

Count Named Records in Minute, Hour or Day Buckets

Problem Implement TweetCounts. recordTweet(tweetName,time) stores one occurrence at an integer second. getTweetCountsPerFrequency(freq,tweetName,start...

Coding & AlgorithmsData Structure DesignBinary Search
1
0
14 people solved
Amazon logo
AmazonGoogleLinkedIn

Also asked at LinkedIn, Microsoft, Meta, Zeta Global

Medium
Software Engineer

Divide All Values into Equal-Sum Groups

Problem Decide whether every element of nums can be assigned to exactly k nonempty groups so that all group sums agree. Each array position must be us...

Coding & AlgorithmsBacktracking & RecursionDynamic Programming
1
0
9 people solved
Amazon logo
AmazonYandexMetaYelp

Also asked at Meta, Yelp

Easy
Software Engineer

Terminal City of a Directed Travel Line

Problem Each paths entry [from,to] is a directed connection. The connections form one line without a loop, so exactly one city has no outgoing connect...

Coding & AlgorithmsGraphsArrays & Strings
0
0
8 people solved
Google logo
GoogleAmazonMicrosoft

Also asked at Microsoft, Bloomberg, TikTok, Meta, Apple

Medium
Software Engineer

Generate Distinct Permutations with Repeated Values

Problem Given the integer array values, which may contain repeated values, return all distinct permutations of the entire array. Each permutation must...

Coding & AlgorithmsBacktracking & RecursionArrays & Strings
1
0
17 people solved
Google logo
GoogleMetaMicrosoft

Also asked at Microsoft, Amazon, Bloomberg, IBM, Wells Fargo, Oracle

Easy
Software Engineer

Interleave Two Words Starting with the First

Problem Create a string by alternately taking the next character from word1 and word2, starting with word1. After one word ends, append all remaining ...

Coding & AlgorithmsArrays & Strings
0
0
9 people solved
Amazon logo
Amazon
Medium
Software Engineer

Design a Train Fare Calculator with Dynamic Stations and a Weekend Fare Cap

A train line serves five stations in this order: `text G → U → H → K → I ` Riding between two adjacent stations costs 1, and a trip costs the sum of t...

Software Engineering FundamentalsLow-Level Design (OOP)
2
0
21 people solved
Aug 29, 2026
Microsoft logo
Microsoft
Medium
Site Reliability EngineerSenior+

Find where two singly linked lists merge, given each as a sequence of node ids

Two singly linked lists can merge: from some node onward they share the very same nodes, so together they form a Y shape. You are given each list as t...

Coding & AlgorithmsLinked Lists
1
0
14 people solved
Jul 30, 2026
Google logo
GoogleMicrosoftBloomberg

Also asked at Bloomberg, Meta, Amazon, Accenture, Yandex, Cognizant, IBM, TCS, Adobe, Careem

Easy
Software Engineer

Find the Longest Consecutive Run of Ones

Find the Longest Consecutive Run of Ones Given a binary array nums, return the length of its longest contiguous run containing only 1 values. A zero b...

Coding & AlgorithmsArrays & Strings
0
0
7 people solved
Goldman Sachs logo
Goldman Sachs
Medium
Software Engineer

Find first non-repeating character index

You are given two separate coding tasks. Task 1: First Unique Character Given a string s (lowercase/ASCII letters), return the index of the first char...

Coding & AlgorithmsArrays & Strings
13
0
187 people solved
Dec 15, 2025
Patreon logo
Patreon
Medium
Software Engineer

Evaluate word-guess feedback with repeats

You are implementing feedback for a Wordle-like guessing game. Part 1 — Produce feedback for one guess You are given two strings of equal length guess...

Coding & AlgorithmsArrays & StringsSimulation & State Machines
28
0
220 people solved
Dec 2, 2025
Notion logo
Notion
Easy
Software Engineer

Implement Table Aggregation

You are given a table represented as a list of rows. Each row contains: - key: a string identifying a group - value: an integer Write a function that ...

Coding & AlgorithmsArrays & Strings
58
1
479 people solved
Feb 1, 2026
ByteDance logo
ByteDance
Medium
Software Engineer

Longest Contiguous Substring in Which No Character Repeats

Given a string s, return the length of the longest contiguous substring of s in which no character appears more than once. Function Signature `python ...

Coding & AlgorithmsTwo Pointers & Sliding Window
3
0
27 people solved
Sep 10, 2026
Anthropic logo
Anthropic
Medium
Machine Learning Engineer

Convert stack samples to execution trace

You are given sampling-profiler output: a list of Sample objects ordered by timestamp ascending. Each Sample has (t: float, stack: list[str]) where st...

Coding & AlgorithmsStacks & Queues
74
0
1202 people solved
Sep 6, 2025
Upstart logo
Upstart
Medium
Software Engineer

Compute buffet revenue with capacity and waiting

A casino buffet has a maximum capacity capacity (number of customers that can be seated at once). You are given: 1) prices: an array where prices[i] i...

Coding & AlgorithmsSimulation & State MachinesStacks & Queues
12
0
162 people solved
Mar 9, 2026
Google logo
GoogleAmazonMicrosoft

Also asked at Microsoft, Meta, Bloomberg

Medium
Software Engineer

Count Subarrays with a Target Majority

Problem Given an integer array nums and an integer target, count its nonempty contiguous subarrays in which target is the majority element. A value is...

Coding & AlgorithmsArrays & Strings
0
1
13 people solved
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