You might have already come across arrays while learning arrays in C and arrays in C++. We even saw in the first tutorial, Data Structures and its Types that an Array is a type of non-primitive, linear, and static data structure. It is a collection of elements of the same type.
In this DSA tutorial, we will see the array data structure in detail i.e. its features, working, implementation, etc. To further enhance your understanding and application of array concepts, consider enrolling in the best Data Structures and Algorithms Course, where you can gain comprehensive insights into effective data structure utilization for improved problem-solving and time management.
An array is a powerful data structure that allows users to store and manipulate a collection of elements, all of the same data type in a single variable. Simply, it is a collection of elements of the same data type stored at contagious memory locations that can be randomly accessed with their index number. It’s one of the most popular and simple data structures and is often used to implement other data structures like stacks and queues.
The representation of an array can be defined by its declaration. A declaration means allocating memory for an array of a given size.
We can declare and initialize arrays in various ways in different programming languages.
arr = array.array(
dataType[] arrayName; dataType[] arrayName = ;
dataType arrayName[arraySize];
In this tutorial, we will cover all the aspects of a Single dimensional array
To access the array elements, use the index number of the required element. The array index starts with 0 . The index of the last element is n-1 .
ArrayExample: __init__( self.a = [ self.b = [ self.c = [display_elements( array_example = ArrayExample() array_example.display_elements()
ArrayExample < main < System.out.println(a[ System.out.println(c[ >
< std::cout std::cout Run Code >>
Read More - Best Data Structure Interview Questions and Answers
fruits = [
ArrayExample < main < String[] fruits = > >
Apple Mango Banana Orange Grapes
We can insert one or multiple elements in an array as per the requirement at the required positions or indexes.
main(): chairs = [ n = pos = item = n = n + j = n - = pos: balls[j + balls[pos] = item ) , i +
BallInsertion < main < n = n + = pos) < balls[j + balls[pos] = item; System.out.println(); + (i + + balls[i]); > > >
< n = n + = pos) < balls[j + balls[pos] = item; std::cout ;
balls = [ n = pos = j = pos n = n - ) + +
Main < main < n = n - ); + (i + + balls[i]); > > >
< n = n - ;
The chairs and the corresponding number of balls after removing a ball
It is used to search an element using the given index or by the value. We can search any element in an array and display both, its index and value.
balls = [ n = order = , order, ", j +
Main < main < System.out.println( + order + " + (j + >
< std::cout "
The corresponding chair number of order:
We can change the values of the elements inside an array at any position or index.
no_of_students = [ n = pos = item = ) ) )
BenchUpdate < main < ); System.out.println(); + (i + + noOfStudents[i]); > noOfStudents[pos] = item; System.out.println(); + (i + + noOfStudents[i]); > > >
; noOfStudents[pos] = item; std::cout ;
The number of students sitting on the benches in order:
So, here we saw every aspect of arrays in data structures. As you are already familiar with arrays, it might not have become difficult to understand the above-discussed concepts. You might have got a broad idea regarding arrays and their applications. I know it's quite difficult to understand the implementation of array operations in a single go. Therefore, refer to it again and again till you get thorough with the arrays in data structures. To test your knowledge of arrays, enroll in our Best Dsa Course.