What are the basic operations of linked lists in the C programming language?
Basic operations of linked lists in the C language include:
- Create a linked list by defining a structure to represent each node in the list, allocating memory dynamically using the malloc function to create nodes, and connecting these nodes together using pointers to form the linked list.
- Inserting a node: To insert a new node at a specified position in a linked list, first locate the node before the insertion position, then point the new node’s pointer to the original node at that position, and finally point the previous node’s pointer to the new node.
- Delete node: To delete a specific node in the linked list, it is necessary to first locate the node before the one to be deleted. Then, update the pointer of the previous node to point to the next node after the one to be deleted. Finally, free the memory space of the node to be deleted.
- Update Node: To modify the value of a specific node in a linked list, you first need to locate the node at the specified position and then update the node’s value.
- Traverse a linked list: By looping through all the nodes in the linked list, you can sequentially access and process the data in each node.
- Search for node: To find the node with the specified value in the linked list, you need to start comparing the values of each node from the head of the linked list until you find the target node or traverse the entire linked list.
- Reverse a linked list: Reverse the order of the nodes in the list, so that the first node of the original list becomes the last node of the new list, and the last node of the original list becomes the first node of the new list.
- Merge lists: combine two lists into one by linking the last node of the first list to the first node of the second list.
These are the fundamental operations of C language linked lists, which can be combined and expanded according to actual needs.