In this tutorial we will start with introduction to data structure why Data Structure is used and data structures different types so let’s begin with topic.

**Data structure**

As a name Data Structure implies the data means information of any kind and the structure means arrangement, that is arrangement of data.

**The Definition of Data Structure**

- Unsequence sentences or information can be arranged in a particular format is known as data structure.
- The definition of Data structure of states that on the a data we have it is stored in a particular format

**Why data structure used?**

- Using of data structure we can allow the information stored on disk very efficiently.
- As a data stored in a particular (efficient way), it is easy to access data as well as for a processing the data.
- It is a secure way to store the data.
- It provide better management of a data.

Now we know what is a data structure and why it is used now we will see the different type of a data structures.

**Types of data structure:-**

As a data structure arranges the data in a particular format there are many data structure to implement that.

**Array****Linked list****Stack****Tree****Queue****Graph**

These data structures are divided into the two main type as a **Linear** and **Non Linear** data structures.

**Linear data structure:-**

In this type of data structure the data is traversed in sequential way, That is we can access only one element.

**Example:- Array, Linked list, Stack, Queue.**

**1) Array:-**

- Array is a Linear type of data structure.
- As it is a linear it’s a sequential access as well.
- The arrangement of data in array is in systematic order.

Example:- int array[10];

**2) Stack:-**

- The stack is also Linear type of data structure.
- It works on
**LIFO**(Last In First Out) Manner.

Example:- CD’s

**3) Queue:-**

- Queue is also Linear type of data structure.
- It works on
**FIFO**(First In First Out) Manner.

Example:- Ticket Counter

**4) Linked list:-**

- It is also a linear type of data structure.
- Data is stored as node with address of next node.

**Non linear data structure:-**

In this data structure the data is stored in a unsequential order and can also retrieve (access) from anywhere.

**Tree:-**

The tree is a set of node which has a starting node called as an root node and all other connected with that node to form a tree.

**Graph:-**

The graph is a set of node connected with edges.

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