How are queues represented in memory?

Queues are typically represented in memory using two main structures: arrays and linked lists. In an array-based implementation, a fixed-size array stores the elements, with pointers (front and rear) indicating the position of the first and last elements. In contrast, a linked list representation uses nodes, where each node contains data and a reference to the next node, allowing for dynamic memory allocation and easy resizing. Both representations facilitate the fundamental operations of enqueue (adding) and dequeue (removing) elements efficiently.