Generic Classes

Question

I've been stuck on this problem for a while and I can't seem to figure it out!!!
using System;
using System.Collections.Generic;

namespace SoloLearn
{
class Program
{
static void Main(string[] args)
{

Elems<string> elems1 = new Elems<string>();
elems1.Add("John", "Tamara", "David");
elems1.Show();

Console.WriteLine();

Elems<int> elems2 = new Elems<int>();
elems2.Add(5, 14, 13);
elems2.Show();

}
}
//make this class generic
class Elems
{
public int[] elements = new int[3];

public void Add(int elem1, int elem2, int elem3)
{
elements[0] = elem1;
elements[1] = elem2;
elements[2] = elem3;
}

public void Show()
{
foreach (int item in elements)
{
Console.Write(item + " ");
}
}
}
}

Answer 1

using System;
using System.Collections.Generic;

namespace SoloLearn
{
class Program
{
static void Main(string[] args)
{

Elems<string> elems1 = new Elems<string>();
elems1.Add("John", "Tamara", "David");
elems1.Show();

Console.WriteLine();

Elems<int> elems2 = new Elems<int>();
elems2.Add(5, 14, 13);
elems2.Show();

}
}
//make this class generic
class Elems<T>
{
public T[] elements = new T[3];

public void Add(T elem1, T elem2, T elem3)
{
elements[0] = elem1;
elements[1] = elem2;
elements[2] = elem3;
}

public void Show()
{
foreach (T item in elements)
{
Console.Write(item + " ");
}
}
}
}

Answer 2

Please revise the chapter, all these are covered in the lesson.

Basically, the `Elems` class is not correctly setup as a generic class. No generic specification used in class definition, the internal storage array <elements>, the arguments of Add() method, and the foreach...loop inside Show() method.

You may also refer external resources for additional info.

https://www.javatpoint.com/c-sharp-generics