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What is the purpose of a `Node` class in implementing a doubly linked list?To store data in the list.To define operations like insertion and deletion.To represent each element of the list.To handle exceptions during list operations.

Question

What is the purpose of a Node class in implementing a doubly linked list?To store data in the list.To define operations like insertion and deletion.To represent each element of the list.To handle exceptions during list operations.

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Solution

The Node class in a doubly linked list serves several purposes:

  1. To store data in the list: Each node in a doubly linked list contains a data field. This field can store any type of data, such as integers, strings, or even objects.

  2. To represent each element of the list: In a doubly linked list, each element is represented by a node. The Node class is used to create these nodes.

  3. To define operations like insertion and deletion: The Node class can also contain methods to perform operations like insertion and deletion. These operations involve changing the next and prev pointers of the nodes.

  4. To handle exceptions during list operations: While not always included in the Node class, exception handling can be implemented to deal with issues that may arise during list operations, such as trying to delete a node that doesn't exist.

In summary, the Node class is a fundamental part of implementing a doubly linked list, as it is used to represent the elements of the list and define the operations that can be performed on them.

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