DoubleQueue

Double Queue implementation in C#

Simple implementation of a double queue in c# using a linked list. The idea is to be able to retrieve 1st element of the queue or last with O(1) time complexity.

Sample

var queue = new DeQueue<int>();
queue.Enqueue(0);
queue.Enqueue(10);
Console.WriteLine($"Peek Left: {queue.PeekLeft()}");
Console.WriteLine($"Peek Right: {queue.PeekRight()}");
queue.Enqueue(20);
queue.Enqueue(30);
queue.Enqueue(40);
queue.Enqueue(50);

Console.WriteLine("Dequeueing");
Console.WriteLine(queue.DequeueLeft());
Console.WriteLine(queue.Dequeue());
Console.WriteLine(queue.Dequeue());
Console.WriteLine(queue.Dequeue());
Console.WriteLine(queue.DequeueLeft());
Console.WriteLine(queue.Dequeue());

Output at cost O(1)

Peek Left: 0
Peek Right: 10
Dequeueing
0
50
40
30
10
20