![]() So the current head of the linked list becomes the second data element and the new node becomes the head of the linked list. This involves pointing the next pointer of the new data node to the current head of the linked list. Depending on whether the new data element is getting inserted at the beginning or at the middle or at the end of the linked list, we have the below scenarios. Inserting element in the linked list involves reassigning the pointers from the existing nodes to the newly inserted node. When the above code is executed, it produces the following result − We simply print the value of the next data element by assigning the pointer of the next node to the current data element. Singly linked lists can be traversed in only forward direction starting form the first data element. In the next section we will see how to traverse the linked list. The below program creates the linked list with three data elements. We pass the appropriate values through the node object to point the to the next data elements. We create a Node object and create another class to use this ode object. Creation of Linked listĪ linked list is created by using the node class we studied in the last chapter. We create such a list and create additional methods to insert, update and remove elements from the list. In this type of data structure there is only one link between any two data elements. ![]() We have already seen how we create a node class and how to traverse the elements of a node.In this chapter we are going to study the types of linked lists known as singly linked lists. We implement the concept of linked lists using the concept of nodes as discussed in the previous chapter. Python does not have linked lists in its standard library. Each data element contains a connection to another data element in form of a pointer.
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