Apple Interview Questions
Practice the exact questions companies are asking right now.
"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."
"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."
"Got a Google recruiter call on Monday, interview on Friday. Crammed PracHub for 4 days. Passed every round. This platform is a miracle worker."
"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."
"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."
"Legit the only resource you need. TC went from 180k -> 350k. Just memorize the top 50 for your target company and you're golden."
"PracHub Premium for one month cost me the price of two coffees a week. It landed me a $280K+ starting offer."
"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."
"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."
"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."
"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."
"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."
"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."
Zero out duplicates and sort an array
Coding question You are given an integer array arr of length about 75. - The data is not sorted. - The array may contain duplicate values. - You must ...
Solve linked list, grid BFS, and median queries
You are given three separate algorithmic tasks. 1) Reorder a linked list by odd/even positions Given the head of a singly linked list, reorder the nod...
Generate Tower of Hanoi moves
You are given n disks of different sizes stacked on peg A (largest at bottom). You have two other pegs, B and C. You may move one disk at a time, and ...
Compute conflicts and minimum meeting rooms
You are given a list of meeting room booking requests. Each request is a half-open time interval [start, end), meaning it uses the room starting at st...
Debug a PyTorch U-Net shape mismatch
You are given a PyTorch implementation of a U-Net-like segmentation model that should follow the original U-Net style with valid convolutions (no padd...
How to debug a Python loop-condition bug
You are given a Python script that appears to hang or produce incorrect results because of a bug in a loop condition (e.g., while/for termination logi...
Design a deck of cards with shuffle/draw
Object-Oriented Design + Randomness Design an in-memory model of a standard 52-card deck. Requirements - Create classes to represent at least: - Car...
Implement a debounce function
Problem: Implement debounce(fn, wait) Implement a debounce utility function. Behavior Given a function fn and a delay wait (milliseconds), debounce(fn...
Explain dataset size, generalization, and U-Net skips
You are interviewing for an ML Engineer role in an image/video team. Answer the following conceptual questions clearly and concisely. 1) Small vs. lar...
Design ad click aggregator and file sync service
You have two system design prompts. 1) Design an ads click aggregation system Design a service that ingests ad click events at very high QPS and suppo...
Merge overlapping time intervals
Problem: Merge Intervals You are given an array of intervals intervals, where each interval is a pair [start, end] with start <= end. Merge all overla...
How to root-cause Wi‑Fi chip stops after 30 minutes
You are running automated tests on a Wi‑Fi chip. The chip transmits normally at the beginning, but after about 30 minutes it stops transmitting (no si...
Explain key React concepts and error handling
Frontend/React Fundamentals Questions Answer the following React and frontend engineering questions: 1. What is a Virtual DOM? 2. How does the Virtual...
Make tree iterators safe under concurrency
You have a binary tree and an inorder iterator implementation that maintains internal traversal state (e.g., a stack). Consider a multi-threaded progr...
Compare DCN v1 vs v2 and A/B test
Part A — DCN variants You are building a CTR/CVR prediction model for a recommender/ads system using a Deep & Cross Network (DCN). 1. Explain the key ...
Implement flood fill using BFS and DFS
Problem You are given a 2D grid image of size m × n, where each cell contains an integer color value. You are also given a starting cell (sr, sc) and ...
Solve 15 common Apple coding questions
The post summarizes high-frequency coding problems reported for Apple Software Engineer interviews. Practice the following algorithm and data-structur...
Describe proudest project and toughest challenge
Behavioral questions 1. Proudest project: Tell me about the project you are most proud of. What was the goal, what did you personally own, and what wa...
Count subarrays with sum equals k
Given an integer array nums (may contain negative numbers and zeros) and an integer k, return the number of contiguous subarrays whose sum is exactly ...
Explain Runnable vs Callable and thread-safe Singleton
Concurrency & Design Patterns (Java) 1. In Java concurrency, what is the difference between Runnable and Callable? - When would you choose one over...