In C++ Write the DLList member function bool DLLidt<T>::insert_before(int index, T& x) that is going to insert a node with the value of x before the node at position index in the list. Example: If the current list is [5, 6, 7, 8] insert_before(2,0); will change the current list to [5,6,0,7,8] **You need to use get_at function, and use it only one time to optimize the call of your code. ** Don’t forget to fix the next, and prev pointers for each node. ** for inserting before 0 index, you may use add_to_head function.
Types of Linked List
A sequence of data elements connected through links is called a linked list (LL). The elements of a linked list are nodes containing data and a reference to the next node in the list. In a linked list, the elements are stored in a non-contiguous manner and the linear order in maintained by means of a pointer associated with each node in the list which is used to point to the subsequent node in the list.
Linked List
When a set of items is organized sequentially, it is termed as list. Linked list is a list whose order is given by links from one item to the next. It contains a link to the structure containing the next item so we can say that it is a completely different way to represent a list. In linked list, each structure of the list is known as node and it consists of two fields (one for containing the item and other one is for containing the next item address).
In C++ Write the DLList member function bool DLLidt<T>::insert_before(int index, T& x) that is going to insert a node with the value of x before the node at position index in the list.
Example:
If the current list is [5, 6, 7, 8]
insert_before(2,0);
will change the current list to [5,6,0,7,8]
**You need to use get_at function, and use it only one time to optimize the call of your code.
** Don’t forget to fix the next, and prev pointers for each node.
** for inserting before 0 index, you may use add_to_head function.
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