C# | Convert Queue To array

Queue represents a first-in, first out collection of object. It is used when you need a first-in, first-out access of items. When you add an item in the list, it is called enqueue, and when you remove an item, it is called deque. Queue.ToArray Method is used to copy the Queue elements to a new array.

Properties:

• Enqueue adds an element to the end of the Queue.
• Dequeue removes the oldest element from the start of the Queue.
• Peek returns the oldest element that is at the start of the Queue but does not remove it from the Queue.
• The capacity of a Queue is the number of elements the Queue can hold.
• As elements are added to a Queue, the capacity is automatically increased as required by reallocating the internal array.
• Queue accepts null as a valid value for reference types and allows duplicate elements.

Syntax :

public virtual object[] ToArray();

Below given are some examples to understand the implementation in a better way:

Example 1:

// C# code to Convert Queue to array
using System;
using System.Collections.Generic;

class GFG {

    // Driver code
    public static void Main()
    {

        // Creating a Queue of strings
        Queue<string> myQueue = new Queue<string>();

        // Inserting the elements into the Queue
        myQueue.Enqueue("Geeks");
        myQueue.Enqueue("Geeks Classes");
        myQueue.Enqueue("Noida");
        myQueue.Enqueue("Data Structures");
        myQueue.Enqueue("GeeksforGeeks");

        // Converting the Queue into array
        String[] arr = myQueue.ToArray();

        // Displaying the elements in array
        foreach(string str in arr)
        {
            Console.WriteLine(str);
        }
    }
}

Output:

Geeks
Geeks Classes
Noida
Data Structures
GeeksforGeeks

Example 2:

// C# code to Convert Queue to array
using System;
using System.Collections.Generic;

class GFG {

    // Driver code
    public static void Main()
    {

        // Creating a Queue of Integers
        Queue<int> myQueue = new Queue<int>();

        // Inserting the elements into the Queue
        myQueue.Enqueue(2);
        myQueue.Enqueue(3);
        myQueue.Enqueue(4);
        myQueue.Enqueue(5);
        myQueue.Enqueue(6);

        // Converting the Queue into array
        int[] arr = myQueue.ToArray();

        // Displaying the elements in array
        foreach(int i in arr)
        {
            Console.WriteLine(i);
        }
    }
}

Output:

2
3
4
5
6

Reference:

• https://docs.microsoft.com/en-us/dotnet/api/system.collections.generic.queue-1.toarray?view=netframework-4.7.2