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C# program to copy Queue elements to array

In this C# program, we will learn how to copy Queue elements to an array? Here we are using CopyTo() method of Queue class.
Submitted by IncludeHelp, on November 26, 2017

Queue.CopyTo() method

This is a method of 'Queue' class, it copies Queue elements to an array.

Syntax:

void CopyTo(Array arr, int index);

Parameter(s):

• arr : array in which we copy queue elements.
• index : starting at the specified array index.

Program to copy Queue elements to array in C#

using System;
using System.Collections;

namespace ConsoleApplication1
{
    
    class Program
    {
        static void Main()
        {
            int[] arr = new int[5];
            Queue Q = new Queue(5);

            Q.Enqueue(10);
            Q.Enqueue(20);
            Q.Enqueue(30);
            Q.Enqueue(40);

            Q.CopyTo(arr, 1);

            Console.WriteLine("Items are:");
            for (int i = 0; i < arr.Length; i++)
            {
                Console.WriteLine("\tItem[" + (i + 1) + "]: " + arr[i]);
            }
        }
    }
}

Output

Items are:
        Item[1]: 0
        Item[2]: 10
        Item[3]: 20
        Item[4]: 30
        Item[5]: 40

In this program, we are copying elements of Queue to array from index 1, so that 0th position is element is 0.

Note: In above program, to use 'Queue' class, we need to include System.Collection namespace.