Queue Class in C#

January 25, 2022 C#

In this post, you will learn how to work with the Queue class so that you can use that same knowledge and thus evolve.

this class is basically a queue (due to the way it works) and represents a FIFO (First In - First Out) type collection, that is, the first value entered will always be the first one to leave;
these values that make up a queue are called elements.

`Queue (object).Enqueue()`	Adds an object at the bottom of the queue
`Queue (object).Dequeue()`	Remove and return the object at the top of the queue
`Queue (object).Peek()`	Return the object at the top of the queue without removing it

using System;
using System.Collections.Generic;

namespace Base {
  class QueueClass {
    private Queue<int> queue = new Queue<int>();
    private const int Multiplier = 10;
    private int number = 1;

    public void Run() {
      for (int index = 1; index <= 5; index++) {
        queue.Enqueue(number);
        number *= Multiplier;
      }

      PrintQueue();

      Console.WriteLine($"\nRemoving the number {queue.Dequeue()} from the queue with the Dequeue() method.\n");

      PrintQueue();

      Console.WriteLine($"\nThe number at the top of the queue is {queue.Peek()}.");
    }

    private void PrintQueue() {
      foreach (var number in queue)
        Console.WriteLine(number);
    }
  }
}

/*
  1
  10
  100
  1000
  10000

  Removing number 1 from the queue with the Dequeue() method.

  10
  100
  1000
  10000

  The number at the top of the queue is 10.
*/

Don’t forget to watch the video and you can always read this post in Portuguese.

Queue Class in C#

Happy coding!