![]() Queue uses two pointers − front and rear. These are all built-in operations to carry out data manipulation and to check the status of the queue. The most fundamental operations in the queue ADT include: enqueue(), dequeue(), peek(), isFull(), isEmpty(). Queue operations also include initialization of a queue, usage and permanently deleting the data from the memory. As a small example in this tutorial, we implement queues using a one-dimensional array. Similar to the stack ADT, a queue ADT can also be implemented using arrays, linked lists, or pointers. More real-world examples can be seen as queues at the ticket windows and bus-stops. Queue is very frequently used in most programming languages.Ī real-world example of queue can be a single-lane one-way road, where the vehicle enters first, exits first. The data is inserted into the queue through one end and deleted from it using the other end. ![]() A queue is an Abstract Data Type (ADT) similar to stack, the thing that makes queue different from stack is that a queue is open at both its ends. DSA - Travelling Salesman Problem (Approximation Approach)Ī queue is a linear data structure where elements are stored in the FIFO (First In First Out) principle where the first element inserted would be the first element to be accessed.DSA - Travelling Salesman Problem (Dynamic Approach).DSA - Longest Common Subsequence Algorithm. ![]() DSA - Dijkstra's Shortest Path Algorithm.DSA - Travelling Salesman Problem (Greedy Approach).DSA - Circular Linked List Data Structure.DSA - Doubly Linked List Data Structure.
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