Enqueue adds an element to the end of the queue.;

Geeks for geeks queue. What is a circular queue? Peek returns the oldest element that is at the. The queue interface is present in java.util package and extends the collection interface is used to hold the elements about to be processed in fifo(first in first out) order.

A computer science portal for geeks. Implement a queue using 2 stacks s1 and s2. The task is to reverse the queue.

Given n integers, the task is to insert those elements in the queue. The priority of the elements in a priority. It contains well written, well thought and well explained computer science and programming articles, quizzes and practice/competitive.

Given a queue q containing n elements. Dequeue removes the oldest element from the start of the queue.; Your task is to complete the function rev(), that reverses the n elements of the queue.

O(n), as all the elements need to be popped out from the queue (q1) and push them back to queue (q2). (i) 1 x (a query of this type means pushing 'x' into the queue) (ii) 2 (a query of this type means to pop element from queue. This contest is based on the data structures and algorithrm concepts which is asked in top product based companies.

A query q is of 2 types (i) 1 x (a query of this type means pushing 'x' into the queue) (ii) 2 (a query of this type means to pop. Your task is to complete the function rev (), that reverses the n elements of the queue. A circular queue is a special version of queue where the last element of the queue is connected to the first element of the queue forming a circle.