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Apple interview questions (last 90 days) · FAANGrind

Apple

FAANGGlobal Last 90 days

Apple's ecosystem pairs devices such as iPhone, Mac, iPad, and Apple Watch with its operating systems, software, and digital services.

Est. 1976 100,001+ employees

Problems: 334
Window: 90d
Topics: 6

334 problems

TopicsLinks

1

1.Longest Consecutive Sequence in an Array

Medium37 co.

Medium

also at 36 more

2

2.Flood fill algorithm

Medium9 co.

Medium

also at 8 more

3

Medium6 co.

Medium

Dynamic Programming

also at 5 more

4

4.Find the intersection point of Y LL

Medium17 co.

Medium

also at 16 more

5

5.Flatten 2D Vector

Medium3 co.

Medium

also at 2 more

6

6.Insert Delete GetRandom O(1)

Medium20 co.

Medium

also at 19 more

7

7.Design An Expression Tree With Evaluate Function

Medium8 co.

Medium

Stack & Queues Binary Trees

also at 7 more

8

8.Kth largest element in a stream of running integers

Medium11 co.

Medium

Binary Search Trees Heaps

also at 10 more

9

9.Count number of Nice subarrays

Medium13 co.

Medium

Arrays Hashing+1

also at 12 more

10

10.Matrix Median

Medium9 co.

Medium

also at 8 more

11

11.Implement Queue using Stack

Medium10 co.

Medium

also at 9 more

12

12.Design Memory Allocator

Medium10 co.

Medium

also at 9 more

13

13.Parse Lisp Expression

Hard1 co.

Hard

also at 0 more

14

14.Shortest Word Distance II

Medium5 co.

Medium

also at 4 more

15

15.Android Unlock Patterns

Hard4 co.

Hard

Recursion & Backtracking

also at 3 more

16

16.Add two numbers in Linked List

Medium38 co.

Medium

also at 37 more

17

17.Next Closest Time

Medium5 co.

Medium

Recursion & Backtracking

also at 4 more

18

18.Power Set Bit Manipulation

Medium19 co.

Medium

Bit Manipulation

also at 18 more

19

19.Construct a BST from a preorder traversal

Medium3 co.

Medium

Binary Search Trees

also at 2 more

20

20.Search in rotated sorted array-II

Medium11 co.

Medium

also at 10 more

21

21.Best time to buy and sell stock with transaction fees

Medium12 co.

Medium

Dynamic Programming

also at 11 more

22

22.Bipartite graph

Medium11 co.

Medium

also at 10 more

23

23.Search in a 2D Matrix

Medium18 co.

Medium

also at 17 more

24

24.Trapping Rainwater

Medium48 co.

Medium

also at 47 more

25

25.Read N Characters Given Read4

Easy2 co.

Easy

also at 1 more

26

26.Dijkstra's algorithm

Medium10 co.

Medium

also at 9 more

27

27.Making a large island

Hard13 co.

Hard

also at 12 more

28

Medium18 co.

Medium

Arrays Linked List

also at 17 more

29

29.Word ladder II

Hard9 co.

Hard

Hashing Recursion & Backtracking+1

also at 8 more

30

Medium7 co.

Medium

Binary Search Trees

also at 6 more

31

31.Count Substrings With K-Frequency Characters II

Medium8 co.

Medium

also at 7 more

32

Medium10 co.

Medium

also at 9 more

33

33.The Knight's Tour

Medium3 co.

Medium

Recursion & Backtracking

also at 2 more

34

34.Rotten Oranges

Medium39 co.

Medium

also at 38 more

35

35.Top View of BT

Medium4 co.

Medium

also at 3 more

36

36.Pascal's Triangle III

Medium4 co.

Medium

Arrays Mathematics

also at 3 more

37

37.Sum of Subarray Ranges

Medium10 co.

Medium

also at 9 more

38

38.Merge Operations to Turn Array Into a Palindrome

Medium3 co.

Medium

also at 2 more

39

39.Group Words by Anagrams

Medium35 co.

Medium

also at 34 more

40

40.Minimum number of platforms required for a railway

Medium11 co.

Medium

Greedy Algorithms Mathematics

also at 10 more

41

41.Find The Closest Marked Node

Medium9 co.

Medium

also at 8 more

42

42.Array Upper Bound

Easy5 co.

Easy

also at 4 more

43

43.Longest Substring Without Repeating Characters

Medium51 co.

Medium

also at 50 more

44

44.Minimum Window Substring

Medium30 co.

Medium

also at 29 more

45

45.Task Scheduler

Medium17 co.

Medium

Heaps Greedy Algorithms

also at 16 more

46

46.3Sum Smaller

Medium14 co.

Medium

also at 13 more

47

47.Longest common substring

Medium8 co.

Medium

Dynamic Programming

also at 7 more

48

48.Level Order Traversal

Medium13 co.

Medium

also at 12 more

49

49.Compare version numbers

Medium11 co.

Medium

also at 10 more

50

50.Furthest Empty Plot From Buildings

Medium3 co.

Medium

also at 2 more

…

Showing 1–50 of 334

Difficulty split

Easy34(10%)
Medium269(81%)
Hard31(9%)

Top topics

Arrays46
Graphs36
Stack & Queues29
Binary Trees27
Linked List27
Dynamic Programming27