A linear data structure is a way of organizing and storing data elements where each element has a unique predecessor and successor, except for the first and last elements. In other words, the elements are arranged sequentially and accessed in a linear manner. The linear data structure represents a linear relationship between the elements, and the order of the elements is determined by their position in the structure.

There are several common types of linear data structures, including:

Arrays: An array is a contiguous block of memory that stores a fixed-size sequence of elements of the same type. Elements in an array are accessed using their index, which represents their position in the array.

Linked Lists: A linked list is a collection of nodes, where each node contains both the data and a reference (or pointer) to the next node in the sequence. The nodes are not necessarily stored in contiguous memory locations, allowing for efficient insertion and deletion operations.

Stacks: A stack is a Last-In-First-Out (LIFO) data structure, meaning that the most recently added element is the first one to be removed. Elements can only be inserted or removed from the top of the stack, and it follows the "last in, first out" principle.

Queues: A queue is a First-In-First-Out (FIFO) data structure, meaning that the first element inserted is the first one to be removed. Elements are added at the rear (enqueue) and removed from the front (dequeue) of the queue.

Deques (Double-Ended Queues): A deque is a generalization of a queue that allows elements to be inserted and removed from both ends. It combines the features of stacks and queues, providing flexibility in managing data elements.

These are just a few examples of linear data structures, and there are other variations and implementations available. The choice of which data structure to use depends on

the specific requirements of the problem and the operations that need to be performed efficiently.

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