Frequently Asked Questions (FAQs) on Arrays
1. What is an array in data structure with example?
An array is a collection of items of the same data type stored at contiguous memory locations. Ex. int arr[5] = {1,2,3,4,5};
2. Why array is a data structure?
Arrays store elements of the same type, they are classified as homogeneous data structures. They can store numbers, strings, characters, boolean values (true and false), objects, and so on.
3. What data structure is an array?
An array is a linear data structure that stores similar elements in contiguous memory locations.
4. What are the types of arrays?
There are majorly two types of arrays:
- One dimensional array
- Multidimensional array
5. How is data stored in an array?
An array is a collection of items of the same data type stored at contiguous memory locations or says the elements are stored one after another in memory. An array uses an index system starting at 0 and going to (n-1), where n is its size.
6. Difference between array and structure?
The structure can contain variables of different types but an array only contains variables of the same type.
7. What are the limitations of an array?
An array is a collection of items of the same data type. That means, in an integer array only integer values can be stored, while in a float array only floating values and character array can have only characters. Thus, no array can have values of two data types.
8. What are the advantages of an array?
There are multiple advantages of array data structure and some of them are:
- Arrays allow random access to elements. This makes accessing elements by position faster.
- Arrays store multiple data of similar types with the same name.
- Array data structures are used to implement the other data structures like linked lists, stacks, queues, trees, graphs, etc.
9. What is the purpose of using arrays?
An array is used when several variables of the same type need to be used, and it can be defined as a sequence of objects of the same type.
10. What is a multidimensional array?
A multi-dimensional array can be termed as an array of arrays that stores homogeneous data in tabular form. Data in Multidimensional Arrays are stored in row-major order.
Getting Started with Array Data Structure
Array is a collection of items of the same variable type that are stored at contiguous memory locations. It is one of the most popular and simple data structures used in programming. In this article, we have decided to provide a complete guide for Arrays, which will help you to tackle any problem based on Arrays.
Table of Content
- What is an Array?
- Basic terminologies of array
- Memory representation of Array
- Declaration of Array
- Initialization of Array
- Importance of Array
- Types of arrays
- Operations on Array
- Complexity Analysis of Operations on Array
- Advantages of Array
- Disadvantages of Array
- Applications of Array
- Top theoretical interview questions
- Frequently Asked Questions (FAQs) on Arrays:
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