Ace the Apple coding interview by solving the apple interview questions exclusively on CodeStudio with a range of practice problems.

Problem Title

Difficulty

Avg Time to solve

Attempted

Longest Duplicate SubString

3

Moderate

30 mins

60

Count the repetitions

1

Hard

25 mins

11

Factor Combinations

4

Moderate

35 mins

31

Sum of Distance

5

Hard

25 mins

12

Largest Tree Value

4

Moderate

25 mins

17

Product of the Last K Numbers

0

Easy

15 mins

32

Hit Counter

1

Moderate

15 mins

28

Reverse vowels in a string

3

Easy

15 mins

72

Roots of the tree having minimum height

14

Moderate

25 mins

63

Modify BST

3

Moderate

20 mins

20

Partition Labels

0

Hard

15 mins

14

UTF-8 Validation

1

Easy

15 mins

9

Flip Equivalent Binary Tree

1

Moderate

25 mins

15

Maximum In Sliding Windows Of Size K

3

Moderate

20 mins

132

The Celebrity Problem

3

Moderate

30 mins

190

Number of Ones

1

Easy

15 mins

98

Maximum Distinct Blocks

0

Easy

10 mins

16

Arrangement

0

Moderate

15 mins

26

Flatten 2D array

0

Easy

20 mins

10

WRONG TURN

3

Moderate

15 mins

27

Matrix Multiplication

1

Moderate

15 mins

29

Longest Harmonious Subsequence

1

Hard

15 mins

12

Partition List

3

Easy

15 mins

31

Reverse Only Letters

1

Easy

15 mins

47

Rearranging String

2

Moderate

15 mins

11

Longest Duplicate SubString

Moderate

3 upvotes

Count the repetitions

Hard

1 upvote

Factor Combinations

Moderate

4 upvotes

Sum of Distance

Hard

5 upvotes

Largest Tree Value

Moderate

4 upvotes

Product of the Last K Numbers

Easy

0 upvotes

Hit Counter

Moderate

1 upvote

Reverse vowels in a string

Easy

3 upvotes

Roots of the tree having minimum height

Moderate

14 upvotes

Modify BST

Moderate

3 upvotes

Partition Labels

Hard

0 upvotes

UTF-8 Validation

Easy

1 upvote

Flip Equivalent Binary Tree

Moderate

1 upvote

Maximum In Sliding Windows Of Size K

Moderate

3 upvotes

The Celebrity Problem

Moderate

3 upvotes

Number of Ones

Easy

1 upvote

Maximum Distinct Blocks

Easy

0 upvotes

Arrangement

Moderate

0 upvotes

Flatten 2D array

Easy

0 upvotes

WRONG TURN

Moderate

3 upvotes

Matrix Multiplication

Moderate

1 upvote

Longest Harmonious Subsequence

Hard

1 upvote

Partition List

Easy

3 upvotes

Reverse Only Letters

Easy

1 upvote

Rearranging String

Moderate

2 upvotes

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