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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
435
Companies
980
Updated
11.12.2026
435 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
Microsoft logo
Microsoft
Medium
Software Engineer

Most Frequent Substring Under Distinct-Letter and Length Limits

Given a lowercase string s, consider only the substrings that satisfy two limits, and return how many times the most frequent of them occurs in s. A s...

Coding & AlgorithmsTwo Pointers & Sliding WindowArrays & Strings
21
0
151 people solved
Sep 7, 2026
Google logo
GoogleAmazonMicrosoft

Also asked at Microsoft, TCS, Meta, Bloomberg, Apple, JPMorgan Chase, Infosys, Oracle, EPAM Systems, TikTok

Medium
Software Engineer

Return the Unique Sorted Target Pair as One-Based Indices

Problem In a nondecreasing sorted array, find the unique pair of different positions whose values sum to target. Return the two one-based indices in i...

Coding & AlgorithmsTwo Pointers & Sliding Window
4
0
24 people solved
Google logo
GoogleMetaAmazon

Also asked at Amazon, TCS, Microsoft, Bloomberg, Infosys, Apple, Altimetrik, Yandex, BCG, CleverTap, Oracle, Axon, HCL, Comcast, Walmart Labs, TikTok, Zoho

Easy
Software Engineer

Compare Normalized ASCII Phrase Symmetry

Problem Check whether a string reads the same backward after removing every non-alphanumeric character and treating uppercase letters as lowercase. Al...

Coding & AlgorithmsTwo Pointers & Sliding WindowArrays & Strings
3
0
23 people solved
Anthropic logo
Anthropic
Hard
Software Engineer Locked

Convert Streaming Call-Stack Samples into Function Events

Convert timestamped call-stack samples into ordered function start and end events, preserving frame depth and recursive occurrences. Handle stack chan...

Coding & AlgorithmsArrays & StringsStacks & Queues
155
2
1121 people solved
Aug 5, 2026
Capital One logo
Capital One
Hard
Software Engineer

Count Subarrays Containing at Least k Disjoint Pairs of Equal Values

Fruits travel along a conveyor belt, and fruits[i] is the type of the i-th fruit, written as an integer. For a contiguous segment of the belt, a pair ...

Coding & AlgorithmsTwo Pointers & Sliding Window
19
0
157 people solved
Sep 10, 2026
Google logo
GoogleBloombergMicrosoft

Also asked at Microsoft, Meta, Amazon, TikTok, BCG, DoorDash, Infosys, Oracle, TCS, Apple, Goldman Sachs, Yandex, HCL, Citi

Medium
Software Engineer

Minimize a Positive-Array Target Window Length

Problem Return the smallest length of a nonempty contiguous subarray whose sum is at least target. If no such subarray exists, return 0. All input val...

Coding & AlgorithmsTwo Pointers & Sliding WindowBinary Search
2
1
24 people solved
Amazon logo
Amazon
Medium
Software EngineerIntern

Longest Run of Healthy Log Entries After One Exactly-k Maintenance Window

A service records its health in a log string, one character per time step: 1 means the service was running normally at that step and 0 means it had fa...

Coding & AlgorithmsTwo Pointers & Sliding WindowArrays & Strings
1
0
11 people solved
Oct 24, 2026
Airwallex logo
Airwallex
Medium
Software Engineer

Find All Index Quadruples Summing to a Target Without Losing Positions

Given an integer array nums and an integer target, return every quadruple of indices (i, j, k, l) with i < j < k < l such that nums[i] + nums[j] + num...

Coding & AlgorithmsArrays & Strings
8
0
67 people solved
Sep 22, 2026
DRW logo
DRW
Easy
Software EngineerIntern

Longest Substring in Which Every Present Letter Occurs Equally Often

A string is balanced if every letter that occurs in it occurs the same number of times. For example, "aabb", "abc" and "zzz" are balanced, while "aab"...

Coding & AlgorithmsArrays & Strings
4
0
45 people solved
Oct 1, 2026
LinkedIn logo
LinkedIn
Medium
Software Engineer

Shortest Substring Containing Every Character of a Pattern

Given two strings s and t, return the shortest contiguous substring of s that contains every character of t, counting repeats: if a character appears ...

Coding & AlgorithmsTwo Pointers & Sliding Window
3
0
45 people solved
Oct 4, 2026
LinkedIn logo
LinkedIn
Medium
Software Engineer

Return the K Smallest Pairwise Products of Two Sorted Arrays

You are given two integer arrays nums1 and nums2, each sorted in non-decreasing order, and an integer k. Every pair of indices (a, b) with 0 <= a < le...

Coding & AlgorithmsHeaps & Priority Queues
11
1
161 people solved
Sep 24, 2026
Stripe logo
Stripe
Medium
Software Engineer

Weekly Deployment Windows: Subtract Freeze Periods, Convert Time Zones, Return Next k

Build a deployment window scheduler. A team describes when deployments may happen with two lists of weekly intervals, both measured in minutes from th...

Software Engineering FundamentalsIntervals & Scheduling
1
0
24 people solved
Sep 19, 2026
Stripe logo
Stripe
Hard
Software Engineer Locked

Subtract Blocked Periods from Allowed Deployment Windows

Compute available deployment windows by merging allowed and blocked half-open intervals, subtracting overlaps, and returning maximal sorted nonempty r...

Coding & AlgorithmsIntervals & SchedulingSorting
41
0
379 people solved
Sep 4, 2026
DRW logo
DRW
Easy
Software EngineerIntern

Minimize the Max-Min Gap of an Array After Changing Up to Three Elements

You are given an integer array nums. You may change the values of at most three of its elements, setting each changed element to any integer you like....

Coding & AlgorithmsSorting
3
0
61 people solved
Oct 1, 2026
Amazon logo
Amazon
Easy
Software Engineer Locked

Find the Earliest Pair with a Target Sum

Find two distinct array elements that sum to a target, returning the valid pair with the earliest second index and then the earliest first index, or a...

Coding & AlgorithmsArrays & Strings
310
7
3076 people solved
Aug 19, 2026
Google logo
Google
Medium
Software Engineer Locked

Minimum Number of Rooms to Schedule Overlapping Meetings

Given meetings as half-open time intervals, find the smallest number of rooms needed so that no two meetings sharing a room overlap. Tests interval re...

Coding & AlgorithmsIntervals & SchedulingHeaps & Priority Queues
42
1
329 people solved
Sep 7, 2026
Roblox logo
Roblox
Medium
Software Engineer

Match-3 Grid: Find Horizontal and Vertical Runs, Then Clear and Drop Cells

You are given an m × n grid of positive integers representing a Match-3 game board. A match is a run of 3 or more equal values side by side in one row...

Coding & AlgorithmsGrids & MatricesSimulation & State Machines
12
1
86 people solved
Aug 5, 2026
Google logo
Google
Medium
Software Engineer

Match Dictionary Words to a Swipe-Keyboard Gesture Path

On a swipe keyboard, the user drags one finger across the letters instead of tapping each key, and the keyboard has to work out which word was meant. ...

Coding & AlgorithmsTwo Pointers & Sliding WindowArrays & Strings
4
2
61 people solved
Aug 31, 2026
Google logo
GoogleAmazonYandex

Also asked at Yandex, Salesforce, Palantir, Bloomberg, Apple, Meta, Goldman Sachs, Pinterest, Microsoft, CrowdStrike, Oracle, ServiceNow, NVIDIA, Palo Alto Networks, LG Electronics, TikTok, Anduril, Accenture

Medium
Software Engineer

Compress Consecutive Character Groups In Place

Compress Consecutive Character Groups In Place Compress the character array chars by processing its maximal consecutive groups: - A group of length on...

Coding & AlgorithmsTwo Pointers & Sliding WindowArrays & Strings
2
0
18 people solved
Virtu Financial logo
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
8
0
61 people solved
Sep 16, 2026
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