Top Apple Coding Interview Questions
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Problem Title
Difficulty
Avg Time to solve
Attempted
Reverse Words In A String
77
Easy
10 mins
3158
Rotting Oranges
18
Moderate
20 mins
2237
Search In Rotated Sorted Array
127
Moderate
30 mins
8415
Intersection of Two Linked Lists
76
Easy
25 mins
4163
Excel Column Number
6
Easy
23 mins
153
Find Number Of Islands
28
Moderate
34 mins
982
Implement Trie
56
Hard
41 mins
2538
Word Break-1
36
Moderate
36 mins
426
Longest Consecutive Sequence
66
Moderate
40 mins
6488
Break Number
2
Moderate
35 mins
125
Right View
11
Moderate
35 mins
1177
Palindrome Partitioning
14
Moderate
25 mins
1034
Merge Two Sorted Linked Lists
65
Moderate
15 mins
7721
House Robber II
32
Moderate
15 mins
6739
Inplace rotate matrix 90 degree
17
Easy
12 mins
903
Spiral Matrix
16
Easy
15 mins
1040
Print Nodes at Distance K From a Given Node
5
Hard
20 mins
461
Morse Code To English
1
Easy
15 mins
41
Minimum Number Of Taps To Water Garden
10
Hard
15 mins
186
Maximum Size Rectangle Sub-matrix With All 1's
17
Hard
10 mins
495
Find the Good Matrix
8
Moderate
30 mins
320
Tic-Tac-Toe Winner
4
Easy
20 mins
44
Serialize and Deserialize Binary Tree
15
Hard
15 mins
422
Vertical Order Traversal
4
Moderate
35 mins
1046
Construct Binary Tree From Inorder and Preorder Traversal
18
Easy
10 mins
1207
Reverse Words In A String NEW
Easy
77 upvotes
Rotting Oranges NEW
Moderate
18 upvotes
Search In Rotated Sorted Array NEW
Moderate
127 upvotes
Intersection of Two Linked Lists NEW
Easy
76 upvotes
Excel Column Number NEW
Easy
6 upvotes
Find Number Of Islands NEW
Moderate
28 upvotes
Implement Trie NEW
Hard
56 upvotes
Word Break-1 NEW
Moderate
36 upvotes
Longest Consecutive Sequence NEW
Moderate
66 upvotes
Break Number NEW
Moderate
2 upvotes
Right View NEW
Moderate
11 upvotes
Palindrome Partitioning NEW
Moderate
14 upvotes
Merge Two Sorted Linked Lists NEW
Moderate
65 upvotes
House Robber II NEW
Moderate
32 upvotes
Inplace rotate matrix 90 degree NEW
Easy
17 upvotes
Spiral Matrix NEW
Easy
16 upvotes
Print Nodes at Distance K From a Given Node NEW
Hard
5 upvotes
Morse Code To English NEW
Easy
1 upvote
Minimum Number Of Taps To Water Garden NEW
Hard
10 upvotes
Maximum Size Rectangle Sub-matrix With All 1's NEW
Hard
17 upvotes
Find the Good Matrix NEW
Moderate
8 upvotes
Tic-Tac-Toe Winner NEW
Easy
4 upvotes
Serialize and Deserialize Binary Tree NEW
Hard
15 upvotes
Vertical Order Traversal NEW
Moderate
4 upvotes
Construct Binary Tree From Inorder and Preorder Traversal NEW
Easy
18 upvotes
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