CPU Physical Electrical Analysis Engineer

Apple

You are given a 0-indexed array of positive integers nums. A subarray of nums is called incremovable if nums becomes strictly increasing on removing the subarray. For example, the subarray [3, 4] is an incremovable subarray of [5, 3, 4, 6, 7] because removing this subarray changes the array [5, 3, 4, 6, 7] to [5, 6, 7] which is strictly increasing. Return the total number of *incremovable* subarrays of nums. Note that an empty array is considered strictly increasing. A subarray is a contiguous non-empty sequence of elements within an array. Example 1: Input: nums = [1,2,3,4] Output: 10 Explanation: The 10 incremovable subarrays are: [1], [2], [3], [4], [1,2], [2,3], [3,4], [1,2,3], [2,3,4], and [1,2,3,4], because on removing any one of these subarrays nums becomes strictly increasing. Note that you cannot select an empty subarray. Example 2: Input: nums = [6,5,7,8] Output: 7 Explanation: The 7 incremovable subarrays are: [5], [6], [5,7], [6,5], [5,7,8], [6,5,7] and [6,5,7,8]. It can be shown that there are only 7 incremovable subarrays in nums. Example 3: Input: nums = [8,7,6,6] Output: 3 Explanation: The 3 incremovable subarrays are: [8,7,6], [7,6,6], and [8,7,6,6]. Note that [8,7] is not an incremovable subarray because after removing [8,7] nums becomes [6,6], which is sorted in ascending order but not strictly increasing.

Apple

Let's talk about semaphores. Could you please explain what semaphores are, and how they are used in operating systems or concurrent programming? Provide examples of situations where semaphores are useful for controlling access to shared resources. Explain the difference between binary and counting semaphores. Furthermore, can you discuss potential problems that can arise when using semaphores, such as deadlocks or starvation, and how these problems can be addressed? For instance, consider a scenario where multiple threads need to access a database connection pool. How can semaphores be employed to manage access to the limited number of connections in the pool, preventing overuse and ensuring fair allocation among threads?

Apple

Let's explore your motivations and understanding of Apple as a company. This role requires a deep commitment and genuine enthusiasm for our products and values. To start, I'd like to understand your perspective. Why are you interested in working at Apple, specifically?** What aspects of our company culture, products, or mission resonate with you? Can you provide specific examples that demonstrate your understanding of Apple's ecosystem and how it differentiates itself from competitors? Perhaps you can discuss how Apple's approach to innovation aligns with your own professional values and career goals? Furthermore, if you were to join our team, what unique contributions do you believe you could make to Apple's continued success? I'm looking for more than just a generic answer about wanting a job. I want to hear about a real connection to Apple and a clear vision for your potential role within the company. Think about our commitment to user experience, our focus on privacy, and our history of groundbreaking innovation. How do these factors influence your desire to be a part of Apple?