How to perform Traversal, Insertion and Deletion on Singly Linked Lists?

Software Development
#1

A singly linked list is a type of linked list that is unidirectional, that is, it can be traversed in only one direction from head to the last node.

Each node is traversed in a linear fashion and not randomly like arrays. The node->next and null properties are very common when performing these operations. Memory management is to be done manually in C++ while performing operations on the Singly Linked List data structure.

PSUEDO CODE:-

-----Traversal - Iterating and Moving through all the elements of the linked list.

void traversal(Node* head) {
    Node* temp = head;
    while(temp != NULL)
    {
        cout<<(temp->data);
        temp = temp->next;
    }
}

-----Insertion - Either at the front or the back of the list. Can also be inserted at a specific position as explained in the video.

Node* insertAtBegin(Node* head, int x)
{
    Node* newNode = new Node(x)
    if(head == NULL)        
    return newNode;
    else     
    {
        newNode->next = head;
        return newNode;
    }
}

-----Deletion - Removing elements from either ends or from a specific position

Node deleteNode(Node* head, Node* toBeDeleted)
{
    if(head == toBeDeleted)
    {
        return head.next;
    }

    Node* temp = head;
    while( temp->next != NULL )
    {
        if(temp->next == toBeDeleted)
        {
            temp->next = temp->next->next;
            return head;
        }
        temp = temp->next;
    }
    return head;

}