Question

How to concatenate (concat) arrays of int in C#

Answer 1

using System;
using System.Linq;

namespace ConsoleApplication_C_Sharp
{
    class Program
    {
        static void Main(string[] args)
        {
            int[] arr1 = { 1, 2, 3, 4 };
            int[] arr2 = { 23, 56, 98 };

            var arrays = arr1.Concat(arr2);

            foreach (int n in arrays)
            {
                Console.WriteLine(n);
            }
        }
    }
}

/*
run:
   
1
2
3
4
23
56
98
 
*/

 

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Answer 2

using System;
using System.Linq;

namespace ConsoleApplication_C_Sharp
{
    class Program
    {
        static void Main(string[] args)
        {
            int[] arr1 = { 1, 2, 3, 4 };
            int[] arr2 = { 23, 56, 98 };
            int[] arr3 = { 100, 200, 300 };

            var arrays = (arr1.Concat(arr2)).Concat(arr3);

            foreach (int n in arrays)
            {
                Console.WriteLine(n);
            }
        }
    }
}

/*
run:
   
1
2
3
4
23
56
98
100
200
300
 
*/

 

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Answer 3

using System;
using System.Linq;

namespace ConsoleApplication_C_Sharp
{
    class Program
    {
        static void Main(string[] args)
        {
            int[] arr1 = { 1, 2, 3, 4 };
            int[] arr2 = { 23, 56, 98 };
            int[] arr3 = { 100, 200, 300 };

            var arrays1 = (arr1.Concat(arr2)).Concat(arr3);
            var arrays2 = ((arr1.Concat(arr2)).Concat(arr3)).Concat(arrays1);

            foreach (int n in arrays2)
            {
                Console.WriteLine(n);
            }
        }
    }
}

/*
run:
   
1
2
3
4
23
56
98
100
200
300
1
2
3
4
23
56
98
100
200
300
 
*/

 

70+ SQL courses for beginners and professionals