Apple java language full#
Apple java language software#

What is your favorite Apple product or service, and why?.

What were some of your best and worst days over the last four years?.

Now that we’ve discussed the top technical questions, let’s look at the most common behavioral interview questions you can expect at an Apple interview, which are arguably just as important for your success.Īs you’ll see from this list, Apple wants to understand what kind of thinker you are, how you handle conflict, and what investments you bring to the table. Memory Complexity: Linear, O ( n ) O(n) O ( n ), where n n n is the size of cache

Search for deleting and adding to tail: Linear, O ( n ) O(n) O ( n ).

Deletion at head when adding a new element: Constant, O ( 1 ) O(1) O ( 1 ).

set (hashset): Constant, O ( 1 ) O(1) O ( 1 ).

get (hashset): Constant, O ( 1 ) O(1) O ( 1 ).

The element at the tail of the doubly linked list is the most recently accessed element.Īll newly inserted elements go to the tail, and any element accessed goes to the tail. Note: The doubly linked list is for tracking the most recently accessed elements. Remove the head element from doubly linked list and delete its hashmap entryĪdd the new element at the tail of linked list and in hashmap Move the accessed element to the tail of the linked list Here is the algorithm: If the element exists in hashmap A doubly linked list helps in maintaining the eviction order and a hashmap helps with O ( 1 ) O(1) O ( 1 ) lookup of cached keys. To implement an LRU cache we use two data structures: a hashmap and a doubly linked list. We evict the oldest data from the cache to accommodate new data. LRU is very simple and a commonly used algorithm for this process. We need to evict data from the cache when it becomes full.

Apple java language full#

Cache stores are usually not big enough to store a full data set.

Similarly, intervals (10, 12) and (12, 15) are also overlapping and should be merged to (10, 15).Ĭaching is a technique to store data in a faster storage (usually RAM) to serve future requests faster. Intervals (1, 5), (3, 7), (4, 6), (6, 8) are overlapping so they should be merged to one interval (1, 8). Merge the overlapping intervals and return a new output array.Ĭonsider an input array below. Problem statement: You have an array (list) of interval pairs as input where each interval has a start and end timestamp, sorted by starting timestamps. The goal of this exercise is to merge all the overlapping intervals of a given list to produce a list that has only mutually exclusive intervals. Memory Complexity: Constant, O ( 1 ) O(1) O ( 1 ) Runtime Complexity: Quadratic, O ( n 2 ) O(n^2) O ( n 2 ) Otherwise, we repeat the above steps for all elements e at index i = 1 to n - 3 until we find a pair that meets the condition. If we find the pair, we have found the solution: a, b and e. Start with first element e in the array and try to find such a pair (a, b) in the remaining array (i.e A to A) that satisfies the condition: a+b = required_sum - e. Then, fix one element e and find a pair (a, b) in the remaining array so that required_sum - e is a + b. Behavioral questions are also very important for hiring managers.ĭata structures you should know: Arrays, Linked Lists, Stacks, Queues, Trees, Graphs, Heaps, Hash sets, Hash mapsĪlgorithms you should know: Depth first search, Breadth first search, Binary search, Quicksort, Mergesort, Dynamic programming, Divide and conquer Each interview is about 45 minutes to an hour where you will be posed with technical problems. You’ll meet with 8-12 Apple employees, and interviews will be a mix of behavioral, domain knowledge, and coding challenges. On-site interview: The onsite interview will last about 6 hours. The coding interviews are about 45-60 minutes, with 30 minutes to complete the challenge. There will be one or two technical phone screens with questions about your resume and a coding question on data structures and algorithms. Technical phone interview: Usually a week later, they will schedule your next technical phone interview. You could expect questions like Why do you want to work for Apple? or What’s your favorite Apple product or service?

This phone screen will last from 15-30 minutes, and the questions will not be overly technical. A recruiter will usually reach out over LinkedIn or email to set up a time for a phone call. Prescreen with Recruiter: It will take about a week from resume submission to first contact. If you are asked to interview at Apple, the process generally looks like this:

Apple java language software#

Apple’s software engineer interview process differs from other larger tech companies, like Amazon, due to the number of interviews they hold and their on-site process.