Data Structures and Algorithms

Linked List can be defined as collection of objects called nodes that are randomly stored in the memory. A node contains two fields i.e. data stored at that particular address and the pointer which contains the address of the next node in the memory. The last node of the list contains pointer to the null. 

Stacks and Queues are fundamental linear data structures widely used in computer science for organizing and managing data. A stack follows the Last In, First Out (LIFO) principle, where the last element added is the first to be removed. It is commonly used in applications like expression evaluation, function call management, and undo operations. A queue, on the other hand, operates on the First In, First Out (FIFO) principle, where the first element added is the first to be removed. Queues are used in scenarios such as job scheduling, buffering, and managing requests in operating systems. Both structures provide efficient ways to store and access data based on specific rules.