Top Array Coding Interview Questions

One of the essential topics for programming interviews is Array. As you learn to code, you'll discover that arrays are used in multiple problems. We have a collection of array coding questions divided into three sections: easy, medium, and hard. Build a strong foundation by dealing with the array questions. Solve all these array interview questions and start your journey.

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Problem Title

Difficulty

Avg Time to solve

Attempted

K Largest Element

198

Moderate

10 mins

4374

Cube Sum Pairs

73

Easy

15 mins

1860

Copy And Reverse The Array

37

Easy

10 mins

2113

Left Rotations of An Array

11

Moderate

10 mins

308

Binary Array Sorting

18

Easy

20 mins

2457

Hotel Floors

12

Easy

10 mins

530

Product Array Puzzle

24

Easy

15 mins

760

Maximum of minimum for every window size

91

Hard

45 mins

4754

Relative Sorting

22

Moderate

25 mins

2213

Linear Probing

20

Easy

15 mins

253

Positive Negative Pair

8

Easy

10 mins

357

Chess Tournament

93

Easy

20 mins

5834

Ninja Fight

16

Easy

10 mins

249

Generate Binary Numbers

27

Easy

10 mins

965

Count Distinct Elements In Every Window

3

Moderate

15 mins

314

Missing number in Arithmetic progression

27

Easy

15 mins

1597

Replace Each Element Of Array With Its Corresponding Rank

7

Easy

10 mins

207

Minimum and Maximum Cost to buy N Candies

10

Hard

10 mins

1458

Sort an array in wave form

25

Easy

10 mins

1778

Count all sub-arrays having sum divisible by k

112

Moderate

15 mins

6496

Search For Integers With Given Difference And At Given Distance

26

Moderate

20 mins

779

Count Distinct Element in Every K Size Window

35

Easy

15 mins

2133

Longest Subarray Zero Sum

63

Easy

15 mins

8584

Best Time to Buy and Sell Stock

165

Moderate

20 mins

25570

Duplicate In Array

350

Easy

15 mins

39984

K Largest Element

Moderate

198 upvotes

Cube Sum Pairs

Easy

73 upvotes

Copy And Reverse The Array

Easy

37 upvotes

Left Rotations of An Array

Moderate

11 upvotes

Binary Array Sorting

Easy

18 upvotes

Hotel Floors

Easy

12 upvotes

Product Array Puzzle

Easy

24 upvotes

Maximum of minimum for every window size

Hard

91 upvotes

Relative Sorting

Moderate

22 upvotes

Linear Probing

Easy

20 upvotes

Positive Negative Pair

Easy

8 upvotes

Chess Tournament

Easy

93 upvotes

Ninja Fight

Easy

16 upvotes

Generate Binary Numbers

Easy

27 upvotes

Count Distinct Elements In Every Window

Moderate

3 upvotes

Missing number in Arithmetic progression

Easy

27 upvotes

Replace Each Element Of Array With Its Corresponding Rank

Easy

7 upvotes

Minimum and Maximum Cost to buy N Candies

Hard

10 upvotes

Sort an array in wave form

Easy

25 upvotes

Count all sub-arrays having sum divisible by k

Moderate

112 upvotes

Search For Integers With Given Difference And At Given Distance

Moderate

26 upvotes

Count Distinct Element in Every K Size Window

Easy

35 upvotes

Longest Subarray Zero Sum

Easy

63 upvotes

Best Time to Buy and Sell Stock

Moderate

165 upvotes

Duplicate In Array

Easy

350 upvotes

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