C++ | Linked Lists (HD)
Programming Language: C++
Subject: Linked Lists
Total Number of Episodes: 1
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In C++, a linked list is a linear data structure that consists of nodes connected to each other through pointers. Each node in a linked list contains two components: the data and a pointer to the next node in the sequence.
Unlike arrays, linked lists do not require contiguous memory allocation. Instead, each node is dynamically allocated and connected at runtime, allowing for efficient insertion and deletion operations.
There are different types of linked lists, such as singly linked lists, doubly linked lists, and circular linked lists. Here, we'll focus on singly linked lists, which are the most basic form.
The structure of a node in a singly linked list can be defined as follows:
struct Node {
int data; // Data stored in the node
Node* next; // Pointer to the next node
};
The data member holds the actual value or data to be stored, and the next pointer points to the next node in the list.
To create a linked list, we need to maintain a reference to the head node, which represents the first node in the list. Initially, the head can be set to nullptr to indicate an empty list.
Linked lists are dynamic data structures that can be easily modified by inserting or deleting nodes. However, accessing a specific element in a linked list requires traversing from the head, which results in a linear search time complexity of O(n) for accessing an element at a specific position.