Interview Questions
Practice the exact questions companies are asking right now.
Questions
9.8k
Companies
511
Updated
08.16.2026
9.8k Questions 511 Companies08.16.2026
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."
Showing 20 results
Role
Medium
Software EngineerRebalance Experiment Buckets with Minimal Reassignment
Rebalance Experiment Buckets with Minimal Reassignment Problem Implement rebalanceBuckets(bucketCount, groups, targetPercentages) -> rebalancedGroups....
Coding & Algorithms
0
0
15 people solved
Jul 23, 2026
Medium
Software EngineerList Unallocated Experiment Buckets
List Unallocated Experiment Buckets Problem An experiment system divides traffic into numbered buckets. Implement findUnallocatedBuckets(bucketCount, ...
Coding & Algorithms
2
0
15 people solved
Jul 23, 2026
Medium
Software EngineerDesign Boolean Search over User Status Posts
Design a search service for short plain-text status posts. It must ingest new statuses and answer Boolean queries containing terms joined by AND and O...
System Design
0
0
6 people solved
Aug 8, 2026
Medium
Software EngineerSum Numbers Formed by Root-to-Leaf Paths
Implement sum_root_to_leaf_numbers(values) for a binary tree serialized as a zero-based heap array. For an existing node at index i, its children are ...
Coding & Algorithms
0
0
6 people solved
Aug 8, 2026
Medium
Software EngineerCount Subarrays with a Target Sum
Implement count_target_subarrays(values, target). Return the number of contiguous subarrays whose elements sum exactly to target. Values may be negati...
Coding & Algorithms
0
0
6 people solved
Aug 8, 2026
Medium
Software EngineerDesign a Food Review and Voting System
Design a Food Review and Voting System Design a system where users can rate a food item and write a review. Other users can upvote or downvote each re...
System Design
1
0
9 people solved
Aug 2, 2026
Hard
Machine Learning EngineerImprove Training With Noisy Annotators
You are given a labeled training dataset as a Pandas DataFrame. Each row contains feature columns, an observed label, and an annotator_id identifying ...
Machine Learning
96
0
833 people solved
Apr 2, 2026
Medium
Software EngineerSenior+Discuss Leadership, Motivation, and AI Safety Values
Discuss Leadership, Motivation, and AI Safety Values Prepare concise, evidence-based answers for an exploratory interview covering your current leader...
Behavioral & Leadership
17
0
115 people solved
Jul 4, 2026
Medium
Software EngineerSenior+Schedule Priority Jobs with Cooldowns
Schedule Priority Jobs with Cooldowns Implement a scheduler for recurring jobs: `text addJob(job_id, priority, cooldown) -> bool getJob() -> job_id or...
Coding & Algorithms
10
0
74 people solved
Jul 17, 2026
Medium
Software EngineerImplement a Followable Microblog Timeline
Implement a Followable Microblog Timeline Design an in-memory microblog service with these operations: `text post(user_id, tweet_id) follow(follower_i...
Coding & Algorithms
1
0
19 people solved
Jul 26, 2026
Medium
Software EngineerBehavioral Round: Judgment, Prioritization, and Influence
Behavioral Round: Judgment, Prioritization, and Influence This was the behavioral interview. You will be asked three questions about judgment, reprior...
Behavioral & Leadership
21
0
155 people solved
Jun 30, 2026
Medium
Software EngineerDemonstrate Customer-Centric Judgment About AI
Demonstrate Customer-Centric Judgment About AI Describe one real situation in which you had to decide whether or how to use an AI capability in a cust...
Behavioral & Leadership
0
0
9 people solved
Aug 1, 2026
Easy
Software EngineerInternDetermine Whether One Person Can Attend Every Meeting
Determine Whether One Person Can Attend Every Meeting Problem Implement canAttendAllMeetings(intervals) -> canAttend. Each meeting is a half-open inte...
Coding & Algorithms
1
0
9 people solved
Aug 1, 2026
Easy
Machine Learning EngineerMaintain the Median of an Integer Stream
Maintain the Median of an Integer Stream Design a MedianFinder with two operations: - addNum(value) adds one integer from a stream. - findMedian() ret...
Coding & Algorithms
0
0
5 people solved
Aug 10, 2026
Medium
Software EngineerDebug a GRPO training loop and explain ratios
You are given a simplified implementation of a GRPO (Group Relative Policy Optimization) training step for an RLHF-style policy model. The training is...
Machine Learning
165
0
1692 people solved
Feb 19, 2026
Easy
Data ScientistSenior+Calculate the Monthly Share of High-Frequency Customers
Calculate the Monthly Share of High-Frequency Customers Write one PostgreSQL SELECT statement or CTE query. Do not create, alter, or modify tables. Sc...
Data Manipulation (SQL/Python)
2
0
12 people solved
Jul 27, 2026
Medium
Software EngineerFind a User's Airport at a Given Time from Flight Records
Given flight records with departure airport, departure time, arrival airport, arrival time, and user id, implement a function that returns where a giv...
Software Engineering Fundamentals
29
0
420 people solved
Jul 2, 2026
Medium
Data ScientistDetermine Whether an Integer Is a Palindrome
Determine Whether an Integer Is a Palindrome Implement is_palindrome_number(value). Return true when the base-10 digits of a non-negative integer read...
Coding & Algorithms
1
0
8 people solved
Aug 3, 2026
Medium
Data ScientistSenior+Evaluate a Bike-Delivery Pilot with Marketplace Metrics
Evaluate a Bike-Delivery Pilot with Marketplace Metrics A delivery marketplace is considering a bike-based delivery option. Decide why the business mi...
Analytics & Experimentation
2
0
20 people solved
Jul 18, 2026
Hard
Software EngineerSenior+Explain BIOS and UEFI Firmware Mechanisms
Explain BIOS and UEFI Firmware Mechanisms Answer the following firmware and low-level systems questions. State assumptions about architecture and firm...
Software Engineering Fundamentals
4
0
50 people solved
Jul 15, 2026