Question

How to copy elements from one array to another in C#

Answer 1

using System;

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            int[] arr1 = { 1, 2, 3, 4, 5, 6, 7 };
            int[] arr2 = new int[arr1.Length];

           
            Console.WriteLine("arr1");
            foreach (int value in arr1)
                Console.WriteLine(value);

            Array.Copy(arr1, arr2, arr1.Length);

            Console.WriteLine("arr2");
            foreach (int value in arr2)
                Console.WriteLine(value);
        }
    }
}

/*
run:
  
arr1
1
2
3
4
5
6
7
arr2
1
2
3
4
5
6
7

*/

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Answer 2

using System;

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            int[] arr1 = { 1, 2, 3, 4, 5, 6, 7 };
            int[] arr2 = new int[arr1.Length];

           
            Console.WriteLine("arr1");
            foreach (int value in arr1)
                Console.WriteLine(value);

            Array.Copy(arr1, arr2, 3);

            Console.WriteLine("arr2");
            foreach (int value in arr2)
                Console.WriteLine(value);
        }
    }
}

/*
run:
  
arr1
1
2
3
4
5
6
7
arr2
1
2
3
0
0
0
0

*/

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Answer 3

using System;

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            int[] arr1 = { 1, 2, 3, 4, 5, 6, 7 };
            int[] arr2 = new int[arr1.Length];

           
            Console.WriteLine("arr1");
            foreach (int value in arr1)
                Console.WriteLine(value);

            Array.Copy(arr1, 2, arr2, 0, 3);

            Console.WriteLine("arr2");
            foreach (int value in arr2)
                Console.WriteLine(value);
        }
    }
}

/*
run:
  
arr1
1
2
3
4
5
6
7
arr2
3
4
5
0
0
0
0

*/

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Answer 4

using System;

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            int[] arr1 = { 1, 2, 3, 4, 5, 6, 7 };
            int[] arr2 = new int[arr1.Length];

           
            Console.WriteLine("arr1");
            foreach (int value in arr1)
                Console.WriteLine(value);

            Array.Copy(arr1, 2, arr2, 3, 3);

            Console.WriteLine("arr2");
            foreach (int value in arr2)
                Console.WriteLine(value);
        }
    }
}

/*
run:
  
arr1
1
2
3
4
5
6
7
arr2
0
0
0
3
4
5
0

*/

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