- Array Interview Questions
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- SQL Interview Questions
- String Interview Questions
- Tree Interview Questions

I am presenting a collection of commonly asked array interview questions. Array questions are the most asked questions these days. The interviewer wants to know, how efficient code you can write. Therefore practice technical questions on arrays.

These array practice questions will help you clear the difficult programming rounds. In other words, these rounds are based on array questions. But, you should practice it frequently. For example, you can practice 2 questions daily.

Below are the collections of array questions which will help you to practice questions on arrays. Practicing daily will help you to improve your programming logic to solve any new questions you will face.

Array interview questions will help you to clear at-least the first round of the technical interviews.

When you are working on array practice questions then keep one thing in mind to first solve the array questions without seeing the solution. After that, you can match how we have solved the question.

Segregate even and odd number such that even numbers occur first and then odd numbers.
Arrange Even numbers in First Half and Odd numbers in...

Given an array of positive integers, write a program to find minimum number of merge operations required to make the array palindrome
If it is...

When given a pattern containing D's and I's, D for decreasing and I for increasing. This function will print minimum number from given sequence...

Given two binary arrays, array1 and array2 with same size. This function will print the longest span with the same sum in two arrays....

Given an array and an input integer X, write a program to find the subarray of length X with least/minimum average
Prints the starting and...

Given a binary array and number of zeros to be flipped, write a program to find the zeros that needs to be flipped so...

Given k sorted arrays of size n each, write a program to merge those arrays and prints the sorted output
Example
INPUT :
arr = {{1,5,7},{2,4,6},{3,10,13}}
OUTPUT :
{1,2,3,4,5,6,10,13}
Time...

Given a sorted array which is rotated at some unknown point, find the minimum element in that array
Example
INPUT :
arr = {5,6,7,1,2,3,4}
OUTPUT :
The minimum element...

Given a function 'int f(unsigned int x)' which takes a non-negative integer 'x' as the input and returns the value where f() becomes positive...

Given an array of size n, find all combinations of size r in the array.
Example
INPUT:
arr = {1,2,3,4}
r = 2
OUTPUT:
{1,2}, {1,3}, {1,4}, {2,3}, {2,4}, {3,4}
Method...