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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
Stripe logo
Stripe
Medium
Software Engineer Locked

Verify business accounts with progressive KYC rules

This question evaluates skills in string parsing, text normalization, rule-based validation, and token-based string matching within a KYC verification...

Coding & AlgorithmsArrays & StringsData Cleaning & Wrangling
28
0
205 people solved
Jan 6, 2026
Citadel logo
Citadel
Medium
Software EngineerIntern

Simulate 2048 and pack board into uint64

Problem: 2048 move simulation + board compression You are implementing part of the 2048 game on a fixed 4×4 grid. Part A — Simulate a move Given a 4×4...

Coding & AlgorithmsSimulation & State MachinesBit Manipulation
36
0
440 people solved
Feb 11, 2026
Upstart logo
Upstart
Medium
Software Engineer

Solve remembered OA coding tasks

The online assessment reportedly had five coding questions, but only the following three were described clearly enough to reconstruct: 1. Find the top...

Coding & AlgorithmsArrays & Strings
14
0
238 people solved
Jan 20, 2026
Google logo
GoogleBloombergMeta
Easy
Software Engineer

Return the Greatest Repeated-Digit Triple in a Long Number

Problem Find contiguous length-three substrings of num containing only one repeated digit. Return the greatest such triple as a three-character string...

Coding & AlgorithmsArrays & Strings
0
0
6 people solved
Rippling logo
Rippling
Medium
Software Engineer

Design an extensible poker-hand evaluator

Design and implement an object-oriented solution for a simplified two-player poker-like game called Camel Cards. The interviewer is explicitly evaluat...

Software Engineering FundamentalsLow-Level Design (OOP)
90
2
1512 people solved
Jan 11, 2026
Anthropic logo
Anthropic
Medium
Machine Learning Engineer Locked

Convert Samples into Event Intervals

This question evaluates understanding of array and sequence processing, run-length encoding concepts, and interval representation for time-ordered tra...

Coding & AlgorithmsArrays & Strings
25
0
157 people solved
Apr 7, 2026
Booking.com logo
Booking.com
Medium
Software Engineer

Solve three OA coding questions

You are given a 90-minute online assessment containing three coding questions. Implement solutions for all questions. --- Question 1: Group strings th...

Coding & AlgorithmsArrays & Strings
28
0
304 people solved
Nov 2, 2025
Microsoft logo
MicrosoftMetaGoogle

Also asked at Google, Amazon, Bloomberg

Easy
Software Engineer

Order Names by Their Paired Distinct Heights

Problem For every index i, names[i] and heights[i] describe the same person. Return the names in decreasing height order. Heights are distinct; names ...

Coding & AlgorithmsSortingArrays & Strings
0
0
10 people solved
Google logo
GoogleMetaAmazon

Also asked at Amazon, Bloomberg, Microsoft

Medium
Software Engineer

Smallest Palindromic Rearrangement

Problem You are given a lowercase English string s that is already a palindrome. Rearrange its characters to form the lexicographically smallest possi...

Coding & AlgorithmsArrays & StringsGreedy
0
0
7 people solved
Amazon logo
Amazon
Medium
Software EngineerSenior+ Locked

Find the Most Frequent Request IDs

Find the most frequent request IDs in a large event stream and return the top k in ranked order. The task tests frequency counting, deterministic tie-...

Coding & AlgorithmsHeaps & Priority QueuesArrays & Strings
31
0
289 people solved
Aug 22, 2026
Google logo
GoogleMicrosoftIBMBloomberg

Also asked at IBM, Bloomberg

Easy
Software Engineer

Count Heights Away From Their Sorted Positions

Problem Let expected be the heights sorted into nondecreasing order. Return the number of positions i where the current heights[i] differs from expect...

Coding & AlgorithmsSortingArrays & Strings
1
0
11 people solved
Google logo
Google
Hard
Machine Learning Engineer Locked

Solve several streaming, DAG, and DP tasks

This multi-part question evaluates proficiency in streaming and online algorithms, DAG-based scheduling and parallelism reasoning, and constrained dyn...

Coding & AlgorithmsGraphsDynamic Programming
24
2
274 people solved
Jan 6, 2026
Medium
Software Engineer

Check Whether One String Contains Another by Direct Comparison

Given a text string and a pattern string, determine whether the pattern occurs as a contiguous substring of the text. Use a direct brute-force compari...

Coding & AlgorithmsArrays & Strings
1
0
16 people solved
Jan 14, 2026
Databricks logo
Databricks
Medium
Software Engineer

Find k customers with least revenue

Problem You are given a list of purchase events. Each event contains: - customer_id (string or int) - amount (integer, may be 0; assume non-negative u...

Coding & AlgorithmsHeaps & Priority Queues
38
0
512 people solved
Feb 12, 2026
Rippling logo
Rippling
Medium
Software Engineer

Compute total wages and partial-hour payments

You are given a list of workers. Each worker has: - id (string) - hourly_rate (non-negative number) - one work shift for a given day: start_time, end_...

Coding & AlgorithmsIntervals & Scheduling
41
1
458 people solved
Mar 1, 2026
Google logo
GoogleAmazonMeta

Also asked at Meta, Microsoft, Bloomberg, CleverTap, Walmart Labs

Medium
Software Engineer

Find Every Value That Appears Twice

Find Every Value That Appears Twice An integer array nums has length n, all its values lie in [1,n], and every occurring value appears either once or ...

Coding & AlgorithmsArrays & Strings
0
0
5 people solved
Google logo
GoogleMicrosoftBloomberg

Also asked at Bloomberg, Amazon, PhonePe

Medium
Software Engineer

Compare Strings Under Swaps and Global Renaming

Problem Two operations may be applied repeatedly to either lowercase string: swap any two positions, or choose two letters already present and exchang...

Coding & AlgorithmsArrays & StringsSorting
1
0
9 people solved
Google logo
Google
Medium
Software Engineer

Arrange Values to Maximize Range Requests

Problem Rearrange the values of nums before answering all inclusive, zero-based ranges in requests. Each request contributes the sum of the values in ...

Coding & AlgorithmsGreedyArrays & Strings
1
0
14 people solved
Anthropic logo
AnthropicOpenAIApplied Intuition

Also asked at Applied Intuition, Meta, Amazon, Google, Microsoft

Hard
Software Engineer

Find Duplicate Files by Content

Problem You are given a list of directory descriptions. Each description contains a directory path followed by one or more file records of the form fi...

Coding & AlgorithmsArrays & StringsParsing & Interpreters
4
0
77 people solved
Salesforce logo
Salesforce
Medium
Software Engineer

Flatten nested JSON into a string map

Problem You are given an input JSON object that may contain nested objects and arrays. Your task is to flatten it into a single-level key/value mappin...

Coding & AlgorithmsParsing & Interpreters
72
0
507 people solved
Oct 18, 2025
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