Apple Interview Questions
Practice 124 real interview questions from Apple. Covers Coding & Algorithms, Behavioral & Leadership, Machine Learning, Software Engineering Fundamentals. For roles including Software Engineer, Data Scientist, Machine Learning Engineer, Data Engineer.
"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"
"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"
"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."
Discuss Challenges and Career Goals
Answer the following behavioral interview questions: 1. What was the most difficult problem you have faced in your work, and how did you approach it? ...
Find the Extra Edge
You are given an undirected graph that started as a tree with n nodes labeled from 1 to n. One additional edge was then added between two different ex...
Wrap Matching Substrings in Bold Tags
During a machine learning engineer phone screen, the coding task was: You are given a string text and a list of strings patterns. Return a new string ...
Implement Masked Multi-Head Self-Attention
Implement the core self-attention module used inside a Transformer encoder. Given an input tensor X of shape (batch_size, sequence_length, d_model), f...
Solve mixed coding tasks from interviews
Solve the following interview-style coding problems (you may choose any programming language unless specified). Provide correct logic and handle edge ...
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...
Compute Earliest Bus Arrival
You are given several bus routes connecting multiple stops. Each route can be represented as directed segments between consecutive stops. For every se...
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...
Critique a Linear Regression Workflow
You are reviewing another data scientist's approach to modeling website dwell time for users who arrive from Google Search. - Response variable: Y, th...
Answer OoO, caches, and memory-system questions
You are interviewing for a CPU/DV role. Provide clear explanations (and small worked examples where useful) for the following computer architecture to...
Rotate a Matrix In Place
Given an n x n integer matrix, rotate it in place by 90 degrees clockwise. As follow-ups, explain how to modify the approach to rotate the same matrix...
Optimize image filters on device
You are shipping an image-filter feature that must run entirely on a mobile device. Users expect preview latency below 30 ms on common phones, memory ...
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...
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 ...
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...
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 a lazy inorder traversal iterator
Design an iterator over a binary tree that returns nodes in inorder sequence (left → root → right) using lazy traversal (i.e., you may not precompute/...
Analyze vision model failures
For a computer vision product, discuss the following: 1. Explain the core machine learning fundamentals that matter most in vision work, including bia...
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...