Question

How to get array subset in C#

Answer 1

using System;
using System.Linq;

public class Program
{
    public static void Main(string[] args)
    {
        int[] arr = new int[8] {3, 7, 9, 0, 4, 2, 1, 8};

        int startIndex = 2; // Start index for the subset
        int length = 4; // Number of elements to take

        int[] subset = arr.Skip(startIndex).Take(length).ToArray();

        Console.WriteLine("Subset: " + string.Join(", ", subset));
    }
}

 
/*
run:
     
Subset: 9, 0, 4, 2
 
*/

 

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Answer 2

using System;

public class Program
{
    public static void Main(string[] args)
    {
        int[] arr = new int[8] {3, 7, 9, 0, 4, 2, 1, 8};

        int startIndex = 2; // Start index for the subset
        int length = 4; // Number of elements to take

        int[] subset = new int[length];
        Array.Copy(arr, startIndex, subset, 0, length);

        Console.WriteLine("Subset: " + string.Join(", ", subset));
    }
}

 
/*
run:
     
Subset: 9, 0, 4, 2
 
*/

 

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